Google地图未显示在我的Android应用程序

Question

我正在开发一个显示Google地图的Android应用程序。我的日志猫显示以下错误。我是android开发中的新手。请帮助我。由于

03-06 06:31:25.561: E/dalvikvm(2476): Could not find class 'com.example.mapdemo.BasicMapActivity', referenced from method com.example.mapdemo.MainActivity.<clinit> 
03-06 06:31:26.253: E/AndroidRuntime(2476): FATAL EXCEPTION: main 
03-06 06:31:26.253: E/AndroidRuntime(2476): java.lang.ExceptionInInitializerError 
03-06 06:31:26.253: E/AndroidRuntime(2476):  at java.lang.Class.newInstanceImpl(Native Method) 
03-06 06:31:26.253: E/AndroidRuntime(2476):  at java.lang.Class.newInstance(Class.java:1319) 
03-06 06:31:26.253: E/AndroidRuntime(2476):  at android.app.Instrumentation.newActivity(Instrumentation.java:1054) 
03-06 06:31:26.253: E/AndroidRuntime(2476):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2097) 
03-06 06:31:26.253: E/AndroidRuntime(2476):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230) 
03-06 06:31:26.253: E/AndroidRuntime(2476):  at android.app.ActivityThread.access$600(ActivityThread.java:141) 
03-06 06:31:26.253: E/AndroidRuntime(2476):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234) 
03-06 06:31:26.253: E/AndroidRuntime(2476):  at android.os.Handler.dispatchMessage(Handler.java:99) 
03-06 06:31:26.253: E/AndroidRuntime(2476):  at android.os.Looper.loop(Looper.java:137) 
03-06 06:31:26.253: E/AndroidRuntime(2476):  at android.app.ActivityThread.main(ActivityThread.java:5041) 
03-06 06:31:26.253: E/AndroidRuntime(2476):  at java.lang.reflect.Method.invokeNative(Native Method) 
03-06 06:31:26.253: E/AndroidRuntime(2476):  at java.lang.reflect.Method.invoke(Method.java:511) 
03-06 06:31:26.253: E/AndroidRuntime(2476):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 
03-06 06:31:26.253: E/AndroidRuntime(2476):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 
03-06 06:31:26.253: E/AndroidRuntime(2476):  at dalvik.system.NativeStart.main(Native Method) 
03-06 06:31:26.253: E/AndroidRuntime(2476): Caused by: java.lang.NoClassDefFoundError: com.example.mapdemo.BasicMapActivity 
03-06 06:31:26.253: E/AndroidRuntime(2476):  at com.example.mapdemo.MainActivity.<clinit>(MainActivity.java:98) 
03-06 06:31:26.253: E/AndroidRuntime(2476):  ... 15 more 

Answer 1

你应该包括这个<uses-library android:name="com.google.android.maps" />在清单应用程序标记，还包括如果你定义了你的活动“BasicMapActivity”这个权限

<uses-permission android:name="android.permission.INTERNET" /> 
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> 
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> 

Answer 2

1. 检查。
2. 检查它是否也包含在manifest.xml中