https://blog.csdn.net/taily_duan/article/details/52605998

[安卓开发笔记一]Android开发配置opencv环境超详细教程

开发安卓项目时要用到opencv，在网上找了很多教程，踩了很多坑才弄好，这里将自己亲自配置的过程记录如下，方便后人

1、前期准备

1 上opencv官网，下载opencv for android 
2 安装 Android studio

2、方法一（使用C++实现底层算法再利用jni传递使用)

开始配置

1.安装Android NDK

新建项目，建完后可通过Android studio下载Android NDK环境 



一般是没有Android NDK的，勾上后点Apply，然后等它下载，安装 
PS：需要*，不知道如何*的，参考如下网址

google*

2 添加opencv native包

将opencv官网上下载好的opencv for Android 中的native文件夹，拷贝到建好的工程根目录下，如图 
拷贝前：

拷贝后： 

3 配置编译环境

编辑gradle.properties文件，增加下面的属性使用旧版的ndk功能（不添加会使用实验性的ndk构建工具） 
android.useDeprecatedNdk=true 

在local.properties文件中配置ndk目录 
ndk.dir=D:\Android\sdk\ndk-bundle 
sdk.dir=D:\Android\sdk 
（如果是通过Android studio 来安装的Android NDK 这一步可以不用，因为Android studio安装NDK了）自动配置好

编辑build.gradle，在android节点中增加下面的代码

<code class="hljs mel has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">sourceSets.main.jni.srcDirs = [] <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//禁止自带的ndk功能</span> sourceSets.main.jniLibs.srcDirs = [<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'src/main/libs'</span>,<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'src/main/jniLibs'</span>] <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//重定向so目录为src/main/libs和src/main/jniLibs，原来为src/main/jniLibs</span> task ndkBuild(type: Exec, description: <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'Compile JNI source with NDK'</span>) { Properties properties = new Properties() properties.load(project.rootProject.<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">file</span>(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'local.properties'</span>).newDataInputStream()) def ndkDir = properties.getProperty(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'ndk.dir'</span>) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (org.apache.tools.ant.taskdefs.<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">condition</span>.Os.isFamily(org.apache.tools.ant.taskdefs.<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">condition</span>.Os.FAMILY_WINDOWS)) { <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">commandLine</span> <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"$ndkDir/ndk-build.cmd"</span>, <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'-C'</span>, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">file</span>(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'src/main/jni'</span>).absolutePath } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> { <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">commandLine</span> <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"$ndkDir/ndk-build"</span>, <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'-C'</span>, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">file</span>(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'src/main/jni'</span>).absolutePath } } tasks.withType(JavaCompile) { compileTask -> compileTask.dependsOn ndkBuild } task ndkClean(type: Exec, description: <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'Clean NDK Binaries'</span>) { Properties properties = new Properties() properties.load(project.rootProject.<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">file</span>(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'local.properties'</span>).newDataInputStream()) def ndkDir = properties.getProperty(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'ndk.dir'</span>) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (org.apache.tools.ant.taskdefs.<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">condition</span>.Os.isFamily(org.apache.tools.ant.taskdefs.<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">condition</span>.Os.FAMILY_WINDOWS)) { <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">commandLine</span> <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"$ndkDir/ndk-build.cmd"</span>,<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'clean'</span>, <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'-C'</span>, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">file</span>(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'src/main/jni'</span>).absolutePath } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> { <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">commandLine</span> <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"$ndkDir/ndk-build"</span>,<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'clean'</span>, <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'-C'</span>, <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">file</span>(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'src/main/jni'</span>).absolutePath } } clean.dependsOn <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'ndkClean'</span> </code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li><li style="box-sizing: border-box; padding: 0px 5px;">34</li><li style="box-sizing: border-box; padding: 0px 5px;">35</li></ul>

加入前： 

加入后（代码太长截图没截完）： 

在main中新建jni目录，并在jni中新建Android.mk和Application.mk 


在Android.mk中加入如下代码

<code class="hljs ruby has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-constant" style="box-sizing: border-box;">LOCAL_PATH</span> <span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:</span>= <span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">$(</span>call my-dir) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">include</span> <span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">$(</span><span class="hljs-constant" style="box-sizing: border-box;">CLEAR_VARS</span>) <span class="hljs-constant" style="box-sizing: border-box;">OpenCV_INSTALL_MODULES</span> <span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:</span>= on <span class="hljs-constant" style="box-sizing: border-box;">OpenCV_CAMERA_MODULES</span> <span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:</span>= off <span class="hljs-constant" style="box-sizing: border-box;">OPENCV_LIB_TYPE</span> <span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:</span>=<span class="hljs-constant" style="box-sizing: border-box;">STATIC</span> ifeq (<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"$(wildcard $(OPENCV_MK_PATH))"</span>,<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">""</span>) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">include</span> ..\..\..\..\native\jni\<span class="hljs-constant" style="box-sizing: border-box;">OpenCV</span>.mk <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">include</span> <span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">$(</span><span class="hljs-constant" style="box-sizing: border-box;">OPENCV_MK_PATH</span>) endif <span class="hljs-constant" style="box-sizing: border-box;">LOCAL_MODULE</span> <span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:</span>= <span class="hljs-constant" style="box-sizing: border-box;">OpenCV</span> <span class="hljs-constant" style="box-sizing: border-box;">LOCAL_SRC_FILES</span> <span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:</span>= <span class="hljs-constant" style="box-sizing: border-box;">LOCAL_LDLIBS</span> += -lm -llog <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">include</span> <span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">$(</span><span class="hljs-constant" style="box-sizing: border-box;">BUILD_SHARED_LIBRARY</span>) </code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li></ul>

在Application.mk中加入如下代码

<code class="hljs makefile has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-constant" style="box-sizing: border-box;">APP_STL</span> := gnustl_static <span class="hljs-constant" style="box-sizing: border-box;">APP_CPPFLAGS</span> := -frtti -fexceptions <span class="hljs-constant" style="box-sizing: border-box;">APP_ABI</span> := armeabi armeabi-v7a <span class="hljs-constant" style="box-sizing: border-box;">APP_PLATFORM</span> := android-8</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li></ul>

这时候，使用gradle构建一下，如果能成功构建出so，说明配置没问题，如下图，点击Android studio右侧的gradle展开，在app->other中找到ndkbuild(没有就刷新)进行构建 

4 实现jni调用

在建项目时自带的java文件所在的文件夹中，新建一个java文件，声明native方法，这里尝试实现灰度化方法，所以命名为gray 

使用javah命令生成头文件，利用AS（android studio）下方的terminal窗口 
如图： 

这里需要注意，有大坑，不会javah的人尤其注意，这里不能进入刚才新建的java文件所在那个目录进行生成，会出现找不到“XXX”类错误，使用javah命令时，必须进入java目录，即上图中cd进去的那个目录，然后使用 
javah -d ../jni com.example.administrator.tryopencv.OpenCVHelper 
其中中间的-d ../jni 是指定输出目录，后面需要生成头文件的java名称一定要写完整，要从com开始写，每一层包含关系都写出来，即写成这样com.example.administrator.tryopencv.OpenCVHelper 
这样才没问题，在jni目录中会出现生成的头文件，如上图所示 
头文件中内容如下： 

然后新建刚才生成的.h对应的cpp文件，注意文件名称和函数名称，一定要一致哦 


建好后就在里面写实现函数啦，灰度化图像

<code class="hljs perl has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">// <span class="hljs-regexp" style="color: rgb(0, 136, 0); box-sizing: border-box;">//</span> Created by Administrator on <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2015</span>/<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12</span>/<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">22</span>. // <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">#include "com_example_administrator_tryopencv_OpenCVHelper.h"</span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">#include <stdio.h></span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">#include <stdlib.h></span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">#include <opencv2/opencv.hpp></span> using namespace cv; extern <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"C"</span> { JNIEXPORT jintArray JNICALL Java_com_example_administrator_tryopencv_OpenCVHelper_gray(JNIEnv <span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">*env</span>,jclass obj,jintArray buf,<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> w,<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> h); JNIEXPORT jintArray JNICALL Java_com_example_administrator_tryopencv_OpenCVHelper_gray(JNIEnv <span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">*env</span>,jclass obj,jintArray buf,<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> w,<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> h) { jint <span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">*cbuf</span>; cbuf = env->GetIntArrayElements(buf,JNI_FALSE); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (NULL == cbuf) { <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>; } Mat imgData(h,w,CV_8UC4,(unsigned char<span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">*)</span> cbuf); u_char <span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">*ptr</span> = imgData.ptr(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">for</span> (<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> i = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>; i < w<span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">*h</span>; ++i) { <span class="hljs-regexp" style="color: rgb(0, 136, 0); box-sizing: border-box;">//</span>图像存储方式为：BGRA <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> grayScale = (<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span>)(ptr[<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">4</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">*i</span>+<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>]<span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">*0</span>.<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">299</span> + ptr[<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">4</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">*i</span>+<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>]<span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">*0</span>.<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">587</span> + ptr[<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">4</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">*i</span>+<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>]<span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">*0</span>.<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">144</span> ); ptr[<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">4</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">*i</span>+<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] = grayScale; ptr[<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">4</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">*i</span>+<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>] = grayScale; ptr[<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">4</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">*i</span>+<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>] = grayScale; } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">int</span> size = w * h; jintArray result = env->NewIntArray(size); env->SetIntArrayRegion(result,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>,size,cbuf); env->ReleaseIntArrayElements(buf,cbuf,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>); <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> result; } } </code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li><li style="box-sizing: border-box; padding: 0px 5px;">34</li><li style="box-sizing: border-box; padding: 0px 5px;">35</li><li style="box-sizing: border-box; padding: 0px 5px;">36</li><li style="box-sizing: border-box; padding: 0px 5px;">37</li><li style="box-sizing: border-box; padding: 0px 5px;">38</li><li style="box-sizing: border-box; padding: 0px 5px;">39</li><li style="box-sizing: border-box; padding: 0px 5px;">40</li><li style="box-sizing: border-box; padding: 0px 5px;">41</li><li style="box-sizing: border-box; padding: 0px 5px;">42</li><li style="box-sizing: border-box; padding: 0px 5px;">43</li><li style="box-sizing: border-box; padding: 0px 5px;">44</li></ul>

然后在Andorid.mk文件中加入 
LOCAL_SRC_FILES :=com_example_administrator_tryopencv_OpenCVHelper.cpp 

然后在java主代码中写测试代码调用就行啦 
这时布局文件代码

<code class="hljs xml has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-pi" style="color: rgb(0, 102, 102); box-sizing: border-box;"><?xml version="1.0" encoding="utf-8"?></span> <span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"><<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">RelativeLayout</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">xmlns:android</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"http://schemas.android.com/apk/res/android"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">xmlns:tools</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"http://schemas.android.com/tools"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_width</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"match_parent"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_height</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"match_parent"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:paddingBottom</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@dimen/activity_vertical_margin"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:paddingLeft</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@dimen/activity_horizontal_margin"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:paddingRight</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@dimen/activity_horizontal_margin"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:paddingTop</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@dimen/activity_vertical_margin"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">tools:context</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"com.example.administrator.choosepic.PicActivity"</span>></span> <span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"><<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">TextView </span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_width</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"wrap_content"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_height</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"wrap_content"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:text</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"choose picture!"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:id</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@+id/title"</span>/></span> <span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"><<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">Button </span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_width</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"wrap_content"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_height</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"wrap_content"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:text</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"灰度图"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:id</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@+id/GiveFaceButton"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_below</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@+id/title"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_alignLeft</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@+id/GetFaceButton"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_alignStart</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@+id/GetFaceButton"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_marginTop</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"71dp"</span> /></span> <span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"><<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">ImageView </span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:adjustViewBounds</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"true"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:maxHeight</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"400dp"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:maxWidth</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"200dp"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_width</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"wrap_content"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_height</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"wrap_content"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:scaleType</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"fitStart"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:id</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@+id/IV01"</span> /></span> <span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"><<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">Button </span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_width</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"wrap_content"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_height</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"wrap_content"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:text</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"原图"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:id</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@+id/GetFaceButton"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_centerVertical</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"true"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_alignParentRight</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"true"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_alignParentEnd</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"true"</span> /></span> <span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"><<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">ImageView </span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:adjustViewBounds</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"true"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:maxHeight</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"400dp"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:maxWidth</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"200dp"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_width</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"wrap_content"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_height</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"wrap_content"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:scaleType</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"fitStart"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:id</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@+id/IV02"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_below</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@id/IV01"</span> /></span> <span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"></<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">RelativeLayout</span>></span> </code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li><li style="box-sizing: border-box; padding: 0px 5px;">34</li><li style="box-sizing: border-box; padding: 0px 5px;">35</li><li style="box-sizing: border-box; padding: 0px 5px;">36</li><li style="box-sizing: border-box; padding: 0px 5px;">37</li><li style="box-sizing: border-box; padding: 0px 5px;">38</li><li style="box-sizing: border-box; padding: 0px 5px;">39</li><li style="box-sizing: border-box; padding: 0px 5px;">40</li><li style="box-sizing: border-box; padding: 0px 5px;">41</li><li style="box-sizing: border-box; padding: 0px 5px;">42</li><li style="box-sizing: border-box; padding: 0px 5px;">43</li><li style="box-sizing: border-box; padding: 0px 5px;">44</li><li style="box-sizing: border-box; padding: 0px 5px;">45</li><li style="box-sizing: border-box; padding: 0px 5px;">46</li><li style="box-sizing: border-box; padding: 0px 5px;">47</li><li style="box-sizing: border-box; padding: 0px 5px;">48</li><li style="box-sizing: border-box; padding: 0px 5px;">49</li><li style="box-sizing: border-box; padding: 0px 5px;">50</li><li style="box-sizing: border-box; padding: 0px 5px;">51</li><li style="box-sizing: border-box; padding: 0px 5px;">52</li><li style="box-sizing: border-box; padding: 0px 5px;">53</li><li style="box-sizing: border-box; padding: 0px 5px;">54</li><li style="box-sizing: border-box; padding: 0px 5px;">55</li></ul>

这是java文件中的代码 

<code class="hljs avrasm has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">package <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.example</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.administrator</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.tryopencv</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> import android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.content</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.ContentResolver</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> import android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.content</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Intent</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> import android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.graphics</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Bitmap</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> import android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.graphics</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.BitmapFactory</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> import android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.net</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Uri</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> import android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.os</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Bundle</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> import android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.support</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.v</span>7<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.app</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.AppCompatActivity</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> import android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.util</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Log</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> import android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.view</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.View</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> import android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.widget</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Button</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> import android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.widget</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.ImageView</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> import java<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.io</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.FileNotFoundException</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> import java<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.io</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.InputStream</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> public class tryOpenCvActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.onCreate</span>(savedInstanceState)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> setContentView(R<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.layout</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.activity</span>_try_open_cv)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> Button GiveFaceButton = (Button)findViewById(R<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.id</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.GiveFaceButton</span>)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> GiveFaceButton<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.setOnClickListener</span>(new Button<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.OnClickListener</span>() { public void onClick(View v) { Intent myIntent = new Intent()<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> //开启picture画面Type设置为image* myIntent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.setType</span>(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"image/*"</span>)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> //使用Intent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.ACTION</span>_GET_CONTENT这个Action myIntent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.setAction</span>(Intent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.ACTION</span>_GET_CONTENT)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">/*取得相片后返回本画面*/</span> startActivityForResult(myIntent,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> } })<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> Button GetFaceButton = (Button)findViewById(R<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.id</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.GetFaceButton</span>)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> GetFaceButton<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.setOnClickListener</span>(new Button<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.OnClickListener</span>() { public void onClick(View v) { Intent myIntent = new Intent()<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> //开启picture画面Type设置为image* myIntent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.setType</span>(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"image/*"</span>)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> //使用Intent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.ACTION</span>_GET_CONTENT这个Action myIntent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.setAction</span>(Intent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.ACTION</span>_GET_CONTENT)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">/*取得相片后返回本画面*/</span> startActivityForResult(myIntent,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> } })<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> } protected void onActivityResult(int requestCode,int resultCode,Intent data) { switch (requestCode) { case <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span> : Uri uri = data<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.getData</span>()<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> Log<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.e</span>(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"uri"</span>,uri<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.toString</span>())<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> ContentResolver cr = this<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.getContentResolver</span>()<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> try { InputStream input = cr<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.openInputStream</span>(uri)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> BitmapFactory<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Options</span> options = new BitmapFactory<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Options</span>()<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> options<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.inJustDecodeBounds</span> = true<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> BitmapFactory<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.decodeStream</span>(input, null, options)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> if (options<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.outWidth</span> > <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1024</span> || options<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.outHeight</span> > <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1024</span>){ options<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.inSampleSize</span> = Math<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.max</span>(options<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.outWidth</span> / <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1024</span>, options<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.outHeight</span>/<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1024</span>)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> } options<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.inJustDecodeBounds</span> = false<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> Bitmap bitmap = BitmapFactory<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.decodeStream</span>(cr<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.openInputStream</span>(uri), null, options)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">/*以下进行灰度化处理*/</span> int w = bitmap<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.getWidth</span>()<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> int h = bitmap<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.getHeight</span>()<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> int[] pix = new int[w * h]<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> bitmap<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.getPixels</span>(pix, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, w, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>, w, h)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> int[] resultPixels = OpenCVHelper<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.gray</span>(pix, w, h)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> Bitmap result = Bitmap<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.createBitmap</span>(w, h, Bitmap<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Config</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.RGB</span>_565)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> result<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.setPixels</span>(resultPixels,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>,w,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>,w,h)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> ImageView imageView = (ImageView)findViewById(R<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.id</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.IV</span>01)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">/*将处理好的灰度图设定到ImageView*/</span> imageView<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.setImageBitmap</span>(result)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> } catch(FileNotFoundException e) { Log<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.e</span>(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"Exception"</span>,e<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.getMessage</span>(),e)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">break</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> case <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>: Uri uri2 = data<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.getData</span>()<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> Log<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.e</span>(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"uri2"</span>,uri2<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.toString</span>())<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> ContentResolver cr2 = this<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.getContentResolver</span>()<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> try { InputStream input = cr2<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.openInputStream</span>(uri2)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> BitmapFactory<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Options</span> options = new BitmapFactory<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Options</span>()<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> options<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.inJustDecodeBounds</span> = true<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> BitmapFactory<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.decodeStream</span>(input, null, options)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> if (options<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.outWidth</span> > <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1024</span> || options<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.outHeight</span> > <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1024</span>){ options<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.inSampleSize</span> = Math<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.max</span>(options<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.outWidth</span> / <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1024</span>, options<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.outHeight</span>/<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1024</span>)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> } options<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.inJustDecodeBounds</span> = false<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> Bitmap bitmap = BitmapFactory<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.decodeStream</span>(cr2<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.openInputStream</span>(uri2), null, options)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> ImageView imageView = (ImageView)findViewById(R<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.id</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.IV</span>02)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">/*将Bitmap设定到ImageView*/</span> imageView<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.setImageBitmap</span>(bitmap)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> } catch(FileNotFoundException e) { Log<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.e</span>(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"Exception"</span>,e<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.getMessage</span>(),e)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">break</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> default: <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">break</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> } super<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.onActivityResult</span>(requestCode, resultCode,data)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> } } </code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li><li style="box-sizing: border-box; padding: 0px 5px;">34</li><li style="box-sizing: border-box; padding: 0px 5px;">35</li><li style="box-sizing: border-box; padding: 0px 5px;">36</li><li style="box-sizing: border-box; padding: 0px 5px;">37</li><li style="box-sizing: border-box; padding: 0px 5px;">38</li><li style="box-sizing: border-box; padding: 0px 5px;">39</li><li style="box-sizing: border-box; padding: 0px 5px;">40</li><li style="box-sizing: border-box; padding: 0px 5px;">41</li><li style="box-sizing: border-box; padding: 0px 5px;">42</li><li style="box-sizing: border-box; padding: 0px 5px;">43</li><li style="box-sizing: border-box; padding: 0px 5px;">44</li><li style="box-sizing: border-box; padding: 0px 5px;">45</li><li style="box-sizing: border-box; padding: 0px 5px;">46</li><li style="box-sizing: border-box; padding: 0px 5px;">47</li><li style="box-sizing: border-box; padding: 0px 5px;">48</li><li style="box-sizing: border-box; padding: 0px 5px;">49</li><li style="box-sizing: border-box; padding: 0px 5px;">50</li><li style="box-sizing: border-box; padding: 0px 5px;">51</li><li style="box-sizing: border-box; padding: 0px 5px;">52</li><li style="box-sizing: border-box; padding: 0px 5px;">53</li><li style="box-sizing: border-box; padding: 0px 5px;">54</li><li style="box-sizing: border-box; padding: 0px 5px;">55</li><li style="box-sizing: border-box; padding: 0px 5px;">56</li><li style="box-sizing: border-box; padding: 0px 5px;">57</li><li style="box-sizing: border-box; padding: 0px 5px;">58</li><li style="box-sizing: border-box; padding: 0px 5px;">59</li><li style="box-sizing: border-box; padding: 0px 5px;">60</li><li style="box-sizing: border-box; padding: 0px 5px;">61</li><li style="box-sizing: border-box; padding: 0px 5px;">62</li><li style="box-sizing: border-box; padding: 0px 5px;">63</li><li style="box-sizing: border-box; padding: 0px 5px;">64</li><li style="box-sizing: border-box; padding: 0px 5px;">65</li><li style="box-sizing: border-box; padding: 0px 5px;">66</li><li style="box-sizing: border-box; padding: 0px 5px;">67</li><li style="box-sizing: border-box; padding: 0px 5px;">68</li><li style="box-sizing: border-box; padding: 0px 5px;">69</li><li style="box-sizing: border-box; padding: 0px 5px;">70</li><li style="box-sizing: border-box; padding: 0px 5px;">71</li><li style="box-sizing: border-box; padding: 0px 5px;">72</li><li style="box-sizing: border-box; padding: 0px 5px;">73</li><li style="box-sizing: border-box; padding: 0px 5px;">74</li><li style="box-sizing: border-box; padding: 0px 5px;">75</li><li style="box-sizing: border-box; padding: 0px 5px;">76</li><li style="box-sizing: border-box; padding: 0px 5px;">77</li><li style="box-sizing: border-box; padding: 0px 5px;">78</li><li style="box-sizing: border-box; padding: 0px 5px;">79</li><li style="box-sizing: border-box; padding: 0px 5px;">80</li><li style="box-sizing: border-box; padding: 0px 5px;">81</li><li style="box-sizing: border-box; padding: 0px 5px;">82</li><li style="box-sizing: border-box; padding: 0px 5px;">83</li><li style="box-sizing: border-box; padding: 0px 5px;">84</li><li style="box-sizing: border-box; padding: 0px 5px;">85</li><li style="box-sizing: border-box; padding: 0px 5px;">86</li><li style="box-sizing: border-box; padding: 0px 5px;">87</li><li style="box-sizing: border-box; padding: 0px 5px;">88</li><li style="box-sizing: border-box; padding: 0px 5px;">89</li><li style="box-sizing: border-box; padding: 0px 5px;">90</li><li style="box-sizing: border-box; padding: 0px 5px;">91</li><li style="box-sizing: border-box; padding: 0px 5px;">92</li><li style="box-sizing: border-box; padding: 0px 5px;">93</li><li style="box-sizing: border-box; padding: 0px 5px;">94</li><li style="box-sizing: border-box; padding: 0px 5px;">95</li><li style="box-sizing: border-box; padding: 0px 5px;">96</li><li style="box-sizing: border-box; padding: 0px 5px;">97</li><li style="box-sizing: border-box; padding: 0px 5px;">98</li><li style="box-sizing: border-box; padding: 0px 5px;">99</li><li style="box-sizing: border-box; padding: 0px 5px;">100</li><li style="box-sizing: border-box; padding: 0px 5px;">101</li><li style="box-sizing: border-box; padding: 0px 5px;">102</li><li style="box-sizing: border-box; padding: 0px 5px;">103</li><li style="box-sizing: border-box; padding: 0px 5px;">104</li><li style="box-sizing: border-box; padding: 0px 5px;">105</li><li style="box-sizing: border-box; padding: 0px 5px;">106</li><li style="box-sizing: border-box; padding: 0px 5px;">107</li><li style="box-sizing: border-box; padding: 0px 5px;">108</li><li style="box-sizing: border-box; padding: 0px 5px;">109</li><li style="box-sizing: border-box; padding: 0px 5px;">110</li><li style="box-sizing: border-box; padding: 0px 5px;">111</li><li style="box-sizing: border-box; padding: 0px 5px;">112</li><li style="box-sizing: border-box; padding: 0px 5px;">113</li><li style="box-sizing: border-box; padding: 0px 5px;">114</li><li style="box-sizing: border-box; padding: 0px 5px;">115</li><li style="box-sizing: border-box; padding: 0px 5px;">116</li><li style="box-sizing: border-box; padding: 0px 5px;">117</li><li style="box-sizing: border-box; padding: 0px 5px;">118</li><li style="box-sizing: border-box; padding: 0px 5px;">119</li><li style="box-sizing: border-box; padding: 0px 5px;">120</li><li style="box-sizing: border-box; padding: 0px 5px;">121</li><li style="box-sizing: border-box; padding: 0px 5px;">122</li><li style="box-sizing: border-box; padding: 0px 5px;">123</li><li style="box-sizing: border-box; padding: 0px 5px;">124</li><li style="box-sizing: border-box; padding: 0px 5px;">125</li><li style="box-sizing: border-box; padding: 0px 5px;">126</li><li style="box-sizing: border-box; padding: 0px 5px;">127</li><li style="box-sizing: border-box; padding: 0px 5px;">128</li><li style="box-sizing: border-box; padding: 0px 5px;">129</li><li style="box-sizing: border-box; padding: 0px 5px;">130</li><li style="box-sizing: border-box; padding: 0px 5px;">131</li><li style="box-sizing: border-box; padding: 0px 5px;">132</li><li style="box-sizing: border-box; padding: 0px 5px;">133</li><li style="box-sizing: border-box; padding: 0px 5px;">134</li><li style="box-sizing: border-box; padding: 0px 5px;">135</li></ul>

然后就可以运行啦 

方法二 （使用opencv封装的jar包，纯java层代码处理）

前期准备和方法一相同，实际上，按照方法一做到“3 配置编译环境”中的编辑Android.mk和Application.mk这一步 
这里需要编译出动态库，所以Android会有所不同 
其中内容如下：

<code class="hljs ruby has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-constant" style="box-sizing: border-box;">LOCAL_PATH</span> <span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:</span>= <span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">$(</span>call my-dir) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">include</span> <span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">$(</span><span class="hljs-constant" style="box-sizing: border-box;">CLEAR_VARS</span>) <span class="hljs-constant" style="box-sizing: border-box;">OpenCV_INSTALL_MODULES</span> <span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:</span>= on <span class="hljs-constant" style="box-sizing: border-box;">OpenCV_CAMERA_MODULES</span> <span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:</span>= off <span class="hljs-constant" style="box-sizing: border-box;">OPENCV_LIB_TYPE</span> <span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:</span>=<span class="hljs-constant" style="box-sizing: border-box;">SHARED</span> ifeq (<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"$(wildcard $(OPENCV_MK_PATH))"</span>,<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">""</span>) <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">include</span> ..\..\..\..\native\jni\<span class="hljs-constant" style="box-sizing: border-box;">OpenCV</span>.mk <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">include</span> <span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">$(</span><span class="hljs-constant" style="box-sizing: border-box;">OPENCV_MK_PATH</span>) endif <span class="hljs-constant" style="box-sizing: border-box;">LOCAL_MODULE</span> <span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:</span>= <span class="hljs-constant" style="box-sizing: border-box;">OpenCV</span> <span class="hljs-constant" style="box-sizing: border-box;">LOCAL_SRC_FILES</span> <span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:</span>= <span class="hljs-constant" style="box-sizing: border-box;">LOCAL_LDLIBS</span> += -lm -llog <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">include</span> <span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">$(</span><span class="hljs-constant" style="box-sizing: border-box;">BUILD_SHARED_LIBRARY</span>) </code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li></ul>

主要改的这两个地方 
OPENCV_LIB_TYPE :=SHARED（静态改动态） 
LOCAL_SRC_FILES :=（没有c++底层代码所以这里为空）

然后在项目中加入opencv的jar包，将之前下好的，opencv for Android sdk中的org文件夹拷贝到main文件夹中 
如图：

在main文件夹下新建aidl文件夹 
将org/opencv/engine/XXX.aidl文件连同目录一起拷到刚才新建的文件夹中 
如图 

这里动态编译出的libopencv.so还依赖于libopencv_java3.so文件，这个文件在native/libs中可以找到，一般添加armeabi和armeabi-v7a中的即可，然后在main文件夹中新建jnilibs文件夹，将armeabi和armeabi-v7a中的libopencv_java3.so连同文件夹一起拷贝到jnilibs，还有一个资源文件，将sdk\java\res\values下的attrs.xml拷贝到工程目录res\values目录下，不然camera会有变量不认识 
如图： 



 
布局文件：

<code class="hljs xml has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-pi" style="color: rgb(0, 102, 102); box-sizing: border-box;"><?xml version="1.0" encoding="utf-8"?></span> <span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"><<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">RelativeLayout</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">xmlns:android</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"http://schemas.android.com/apk/res/android"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">xmlns:tools</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"http://schemas.android.com/tools"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_width</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"match_parent"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_height</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"match_parent"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:paddingBottom</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@dimen/activity_vertical_margin"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:paddingLeft</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@dimen/activity_horizontal_margin"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:paddingRight</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@dimen/activity_horizontal_margin"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:paddingTop</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@dimen/activity_vertical_margin"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">tools:context</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"com.example.administrator.tryopencv2.tryOpenCv2Activity"</span>></span> <span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"><<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">TextView </span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_width</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"wrap_content"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_height</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"wrap_content"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:text</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"choose picture!"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:id</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@+id/title"</span>/></span> <span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"><<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">Button </span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_width</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"wrap_content"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_height</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"wrap_content"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:text</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"原图"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:id</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@+id/GiveFaceButton"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_below</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@+id/title"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_alignLeft</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@+id/GetFaceButton"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_alignStart</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@+id/GetFaceButton"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_marginTop</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"71dp"</span> /></span> <span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"><<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">ImageView </span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:adjustViewBounds</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"true"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:maxHeight</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"400dp"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:maxWidth</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"200dp"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_width</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"wrap_content"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_height</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"wrap_content"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:scaleType</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"fitStart"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:id</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@+id/IV01"</span> /></span> <span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"><<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">Button </span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_width</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"wrap_content"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_height</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"wrap_content"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:text</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"灰度图"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:id</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@+id/GetFaceButton"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_centerVertical</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"true"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_alignParentRight</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"true"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_alignParentEnd</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"true"</span> /></span> <span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"><<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">ImageView </span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:adjustViewBounds</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"true"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:maxHeight</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"400dp"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:maxWidth</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"200dp"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_width</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"wrap_content"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_height</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"wrap_content"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:scaleType</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"fitStart"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:id</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@+id/IV02"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(102, 0, 102);">android:layout_below</span>=<span class="hljs-value" style="box-sizing: border-box; color: rgb(0, 136, 0);">"@id/IV01"</span> /></span> <span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;"></<span class="hljs-title" style="box-sizing: border-box; color: rgb(0, 0, 136);">RelativeLayout</span>></span> </code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li><li style="box-sizing: border-box; padding: 0px 5px;">34</li><li style="box-sizing: border-box; padding: 0px 5px;">35</li><li style="box-sizing: border-box; padding: 0px 5px;">36</li><li style="box-sizing: border-box; padding: 0px 5px;">37</li><li style="box-sizing: border-box; padding: 0px 5px;">38</li><li style="box-sizing: border-box; padding: 0px 5px;">39</li><li style="box-sizing: border-box; padding: 0px 5px;">40</li><li style="box-sizing: border-box; padding: 0px 5px;">41</li><li style="box-sizing: border-box; padding: 0px 5px;">42</li><li style="box-sizing: border-box; padding: 0px 5px;">43</li><li style="box-sizing: border-box; padding: 0px 5px;">44</li><li style="box-sizing: border-box; padding: 0px 5px;">45</li><li style="box-sizing: border-box; padding: 0px 5px;">46</li><li style="box-sizing: border-box; padding: 0px 5px;">47</li><li style="box-sizing: border-box; padding: 0px 5px;">48</li><li style="box-sizing: border-box; padding: 0px 5px;">49</li><li style="box-sizing: border-box; padding: 0px 5px;">50</li><li style="box-sizing: border-box; padding: 0px 5px;">51</li><li style="box-sizing: border-box; padding: 0px 5px;">52</li><li style="box-sizing: border-box; padding: 0px 5px;">53</li><li style="box-sizing: border-box; padding: 0px 5px;">54</li><li style="box-sizing: border-box; padding: 0px 5px;">55</li></ul>

主程序java文件

<code class="hljs avrasm has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">package <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.example</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.administrator</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.tryopencv</span>2<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> import android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.content</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.ContentResolver</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> import android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.content</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Intent</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> import android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.graphics</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Bitmap</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> import android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.graphics</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.BitmapFactory</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> import android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.net</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Uri</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> import android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.os</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Bundle</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> import android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.support</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.v</span>7<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.app</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.AppCompatActivity</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> import android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.util</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Log</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> import android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.view</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.View</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> import android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.widget</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Button</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> import android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.widget</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.ImageView</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> import java<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.io</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.FileNotFoundException</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> import java<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.io</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.InputStream</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> import org<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.opencv</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.android</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.OpenCVLoader</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> import org<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.opencv</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.android</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Utils</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> import org<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.opencv</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.core</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Mat</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> import org<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.opencv</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.imgproc</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Imgproc</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> public class tryOpenCv2Activity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.onCreate</span>(savedInstanceState)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> setContentView(R<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.layout</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.activity</span>_try_open_cv2 )<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> Button GiveFaceButton = (Button)findViewById(R<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.id</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.GiveFaceButton</span>)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> GiveFaceButton<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.setOnClickListener</span>(new Button<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.OnClickListener</span>() { public void onClick(View v) { Intent myIntent = new Intent()<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> //开启picture画面Type设置为image* myIntent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.setType</span>(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"image/*"</span>)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> //使用Intent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.ACTION</span>_GET_CONTENT这个Action myIntent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.setAction</span>(Intent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.ACTION</span>_GET_CONTENT)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">/*取得相片后返回本画面*/</span> startActivityForResult(myIntent,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> } })<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> Button GetFaceButton = (Button)findViewById(R<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.id</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.GetFaceButton</span>)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> GetFaceButton<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.setOnClickListener</span>(new Button<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.OnClickListener</span>() { public void onClick(View v) { Intent myIntent = new Intent()<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> //开启picture画面Type设置为image* myIntent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.setType</span>(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"image/*"</span>)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> //使用Intent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.ACTION</span>_GET_CONTENT这个Action myIntent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.setAction</span>(Intent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.ACTION</span>_GET_CONTENT)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">/*取得相片后返回本画面*/</span> startActivityForResult(myIntent,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> } })<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> } protected void onActivityResult(int requestCode,int resultCode,Intent data) { switch (requestCode) { case <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span> : Uri uri = data<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.getData</span>()<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> Log<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.e</span>(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"uri"</span>,uri<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.toString</span>())<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> ContentResolver cr = this<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.getContentResolver</span>()<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> try { InputStream input = cr<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.openInputStream</span>(uri)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> BitmapFactory<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Options</span> options = new BitmapFactory<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Options</span>()<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> options<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.inJustDecodeBounds</span> = true<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> BitmapFactory<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.decodeStream</span>(input, null, options)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> if (options<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.outWidth</span> > <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1024</span> || options<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.outHeight</span> > <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1024</span>){ options<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.inSampleSize</span> = Math<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.max</span>(options<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.outWidth</span> / <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1024</span>, options<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.outHeight</span>/<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1024</span>)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> } options<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.inJustDecodeBounds</span> = false<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> Bitmap bitmap = BitmapFactory<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.decodeStream</span>(cr<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.openInputStream</span>(uri), null, options)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">/*以下进行灰度化处理（使用C++写底层函数jni调用）*/</span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">/* int w = bitmap.getWidth(); int h = bitmap.getHeight(); int[] pix = new int[w * h]; bitmap.getPixels(pix, 0, w, 0, 0, w, h); int[] resultPixels = OpenCVHelper.gray(pix, w, h); Bitmap result = Bitmap.createBitmap(w, h, Bitmap.Config.RGB_565); result.setPixels(resultPixels,0,w,0,0,w,h); */</span> ImageView imageView = (ImageView)findViewById(R<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.id</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.IV</span>01)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">/*将处理好的灰度图设定到ImageView*/</span> imageView<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.setImageBitmap</span>(bitmap)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> } catch(FileNotFoundException e) { Log<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.e</span>(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"Exception"</span>,e<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.getMessage</span>(),e)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">break</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> case <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>: Uri uri2 = data<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.getData</span>()<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> Log<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.e</span>(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"uri2"</span>,uri2<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.toString</span>())<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> ContentResolver cr2 = this<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.getContentResolver</span>()<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> try { InputStream input = cr2<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.openInputStream</span>(uri2)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> BitmapFactory<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Options</span> options = new BitmapFactory<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Options</span>()<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> options<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.inJustDecodeBounds</span> = true<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> BitmapFactory<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.decodeStream</span>(input, null, options)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> if (options<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.outWidth</span> > <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1024</span> || options<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.outHeight</span> > <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1024</span>){ options<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.inSampleSize</span> = Math<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.max</span>(options<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.outWidth</span> / <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1024</span>, options<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.outHeight</span>/<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1024</span>)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> } options<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.inJustDecodeBounds</span> = false<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> Bitmap bitmap = BitmapFactory<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.decodeStream</span>(cr2<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.openInputStream</span>(uri2), null, options)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">/*使用opencv包进行灰度化处理*/</span> OpenCVLoader<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.initDebug</span>()<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> Mat rgbMat = new Mat()<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> Mat grayMat = new Mat()<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> Bitmap grayBitmap = Bitmap<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.createBitmap</span>(bitmap<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.getWidth</span>(),bitmap<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.getHeight</span>(),Bitmap<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Config</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.RGB</span>_565)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> Utils<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.bitmapToMat</span>(bitmap,rgbMat)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> Imgproc<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.cvtColor</span>(rgbMat, grayMat, Imgproc<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.COLOR</span>_RGB2GRAY)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> Utils<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.matToBitmap</span>(grayMat,grayBitmap)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">/*将grayBitmap设定到ImageView*/</span> ImageView imageView = (ImageView)findViewById(R<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.id</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.IV</span>02)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> imageView<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.setImageBitmap</span>(grayBitmap)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> } catch(FileNotFoundException e) { Log<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.e</span>(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"Exception"</span>,e<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.getMessage</span>(),e)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">break</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> default: <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">break</span><span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> } super<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.onActivityResult</span>(requestCode, resultCode, data)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span> } }</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li><li style="box-sizing: border-box; padding: 0px 5px;">34</li><li style="box-sizing: border-box; padding: 0px 5px;">35</li><li style="box-sizing: border-box; padding: 0px 5px;">36</li><li style="box-sizing: border-box; padding: 0px 5px;">37</li><li style="box-sizing: border-box; padding: 0px 5px;">38</li><li style="box-sizing: border-box; padding: 0px 5px;">39</li><li style="box-sizing: border-box; padding: 0px 5px;">40</li><li style="box-sizing: border-box; padding: 0px 5px;">41</li><li style="box-sizing: border-box; padding: 0px 5px;">42</li><li style="box-sizing: border-box; padding: 0px 5px;">43</li><li style="box-sizing: border-box; padding: 0px 5px;">44</li><li style="box-sizing: border-box; padding: 0px 5px;">45</li><li style="box-sizing: border-box; padding: 0px 5px;">46</li><li style="box-sizing: border-box; padding: 0px 5px;">47</li><li style="box-sizing: border-box; padding: 0px 5px;">48</li><li style="box-sizing: border-box; padding: 0px 5px;">49</li><li style="box-sizing: border-box; padding: 0px 5px;">50</li><li style="box-sizing: border-box; padding: 0px 5px;">51</li><li style="box-sizing: border-box; padding: 0px 5px;">52</li><li style="box-sizing: border-box; padding: 0px 5px;">53</li><li style="box-sizing: border-box; padding: 0px 5px;">54</li><li style="box-sizing: border-box; padding: 0px 5px;">55</li><li style="box-sizing: border-box; padding: 0px 5px;">56</li><li style="box-sizing: border-box; padding: 0px 5px;">57</li><li style="box-sizing: border-box; padding: 0px 5px;">58</li><li style="box-sizing: border-box; padding: 0px 5px;">59</li><li style="box-sizing: border-box; padding: 0px 5px;">60</li><li style="box-sizing: border-box; padding: 0px 5px;">61</li><li style="box-sizing: border-box; padding: 0px 5px;">62</li><li style="box-sizing: border-box; padding: 0px 5px;">63</li><li style="box-sizing: border-box; padding: 0px 5px;">64</li><li style="box-sizing: border-box; padding: 0px 5px;">65</li><li style="box-sizing: border-box; padding: 0px 5px;">66</li><li style="box-sizing: border-box; padding: 0px 5px;">67</li><li style="box-sizing: border-box; padding: 0px 5px;">68</li><li style="box-sizing: border-box; padding: 0px 5px;">69</li><li style="box-sizing: border-box; padding: 0px 5px;">70</li><li style="box-sizing: border-box; padding: 0px 5px;">71</li><li style="box-sizing: border-box; padding: 0px 5px;">72</li><li style="box-sizing: border-box; padding: 0px 5px;">73</li><li style="box-sizing: border-box; padding: 0px 5px;">74</li><li style="box-sizing: border-box; padding: 0px 5px;">75</li><li style="box-sizing: border-box; padding: 0px 5px;">76</li><li style="box-sizing: border-box; padding: 0px 5px;">77</li><li style="box-sizing: border-box; padding: 0px 5px;">78</li><li style="box-sizing: border-box; padding: 0px 5px;">79</li><li style="box-sizing: border-box; padding: 0px 5px;">80</li><li style="box-sizing: border-box; padding: 0px 5px;">81</li><li style="box-sizing: border-box; padding: 0px 5px;">82</li><li style="box-sizing: border-box; padding: 0px 5px;">83</li><li style="box-sizing: border-box; padding: 0px 5px;">84</li><li style="box-sizing: border-box; padding: 0px 5px;">85</li><li style="box-sizing: border-box; padding: 0px 5px;">86</li><li style="box-sizing: border-box; padding: 0px 5px;">87</li><li style="box-sizing: border-box; padding: 0px 5px;">88</li><li style="box-sizing: border-box; padding: 0px 5px;">89</li><li style="box-sizing: border-box; padding: 0px 5px;">90</li><li style="box-sizing: border-box; padding: 0px 5px;">91</li><li style="box-sizing: border-box; padding: 0px 5px;">92</li><li style="box-sizing: border-box; padding: 0px 5px;">93</li><li style="box-sizing: border-box; padding: 0px 5px;">94</li><li style="box-sizing: border-box; padding: 0px 5px;">95</li><li style="box-sizing: border-box; padding: 0px 5px;">96</li><li style="box-sizing: border-box; padding: 0px 5px;">97</li><li style="box-sizing: border-box; padding: 0px 5px;">98</li><li style="box-sizing: border-box; padding: 0px 5px;">99</li><li style="box-sizing: border-box; padding: 0px 5px;">100</li><li style="box-sizing: border-box; padding: 0px 5px;">101</li><li style="box-sizing: border-box; padding: 0px 5px;">102</li><li style="box-sizing: border-box; padding: 0px 5px;">103</li><li style="box-sizing: border-box; padding: 0px 5px;">104</li><li style="box-sizing: border-box; padding: 0px 5px;">105</li><li style="box-sizing: border-box; padding: 0px 5px;">106</li><li style="box-sizing: border-box; padding: 0px 5px;">107</li><li style="box-sizing: border-box; padding: 0px 5px;">108</li><li style="box-sizing: border-box; padding: 0px 5px;">109</li><li style="box-sizing: border-box; padding: 0px 5px;">110</li><li style="box-sizing: border-box; padding: 0px 5px;">111</li><li style="box-sizing: border-box; padding: 0px 5px;">112</li><li style="box-sizing: border-box; padding: 0px 5px;">113</li><li style="box-sizing: border-box; padding: 0px 5px;">114</li><li style="box-sizing: border-box; padding: 0px 5px;">115</li><li style="box-sizing: border-box; padding: 0px 5px;">116</li><li style="box-sizing: border-box; padding: 0px 5px;">117</li><li style="box-sizing: border-box; padding: 0px 5px;">118</li><li style="box-sizing: border-box; padding: 0px 5px;">119</li><li style="box-sizing: border-box; padding: 0px 5px;">120</li><li style="box-sizing: border-box; padding: 0px 5px;">121</li><li style="box-sizing: border-box; padding: 0px 5px;">122</li><li style="box-sizing: border-box; padding: 0px 5px;">123</li><li style="box-sizing: border-box; padding: 0px 5px;">124</li><li style="box-sizing: border-box; padding: 0px 5px;">125</li><li style="box-sizing: border-box; padding: 0px 5px;">126</li><li style="box-sizing: border-box; padding: 0px 5px;">127</li><li style="box-sizing: border-box; padding: 0px 5px;">128</li><li style="box-sizing: border-box; padding: 0px 5px;">129</li><li style="box-sizing: border-box; padding: 0px 5px;">130</li><li style="box-sizing: border-box; padding: 0px 5px;">131</li><li style="box-sizing: border-box; padding: 0px 5px;">132</li><li style="box-sizing: border-box; padding: 0px 5px;">133</li><li style="box-sizing: border-box; padding: 0px 5px;">134</li><li style="box-sizing: border-box; padding: 0px 5px;">135</li><li style="box-sizing: border-box; padding: 0px 5px;">136</li><li style="box-sizing: border-box; padding: 0px 5px;">137</li><li style="box-sizing: border-box; padding: 0px 5px;">138</li><li style="box-sizing: border-box; padding: 0px 5px;">139</li><li style="box-sizing: border-box; padding: 0px 5px;">140</li><li style="box-sizing: border-box; padding: 0px 5px;">141</li><li style="box-sizing: border-box; padding: 0px 5px;">142</li><li style="box-sizing: border-box; padding: 0px 5px;">143</li><li style="box-sizing: border-box; padding: 0px 5px;">144</li><li style="box-sizing: border-box; padding: 0px 5px;">145</li><li style="box-sizing: border-box; padding: 0px 5px;">146</li><li style="box-sizing: border-box; padding: 0px 5px;">147</li><li style="box-sizing: border-box; padding: 0px 5px;">148</li><li style="box-sizing: border-box; padding: 0px 5px;">149</li><li style="box-sizing: border-box; padding: 0px 5px;">150</li></ul>

运行即可，运行中会遇到，在opencv某个文件中出现找不到R包的错误，出现错误时，进入那个文件，导入自己的R包即可 

运行结果：