图像在Android上无法正确调整大小
我在从GitHub获取的库中遇到问题。 图书馆导致圆形图像。圆角部分运行得很好,但图像调整大小不如其他部分大。它不同的图像和图像,我想这个工作调整任何图像的大小,我的视图在Android上的大小。例如,如果我用android:layout_width="100dp"
调用这个,我想要调整图像大小。图像在Android上无法正确调整大小
非常感谢您的时间。
这是库:
package com.roundimage.support;
import android.annotation.SuppressLint;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Shader;
import android.graphics.drawable.BitmapDrawable;
import android.provider.MediaStore;
import android.util.AttributeSet;
import android.widget.ImageView;
public class CircularImageView extends ImageView {
private int borderWidth = 3;
private int viewWidth;
private int viewHeight;
private Bitmap image;
private Paint paint;
private Paint paintBorder;
private BitmapShader shader;
public CircularImageView(Context context) {
super(context);
setup();
}
public CircularImageView(Context context, AttributeSet attrs) {
super(context, attrs);
setup();
}
public CircularImageView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
setup();
}
private void setup()
{
// init paint
paint = new Paint();
paint.setAntiAlias(true);
paintBorder = new Paint();
setBorderColor(Color.WHITE);
paintBorder.setAntiAlias(true);
}
public void setBorderWidth(int borderWidth)
{
this.borderWidth = borderWidth;
this.invalidate();
}
public void setBorderColor(int borderColor)
{
if(paintBorder != null)
paintBorder.setColor(borderColor);
this.invalidate();
}
private void loadBitmap()
{
BitmapDrawable bitmapDrawable = (BitmapDrawable) this.getDrawable();
if(bitmapDrawable != null)
image = bitmapDrawable.getBitmap();
}
@SuppressLint("DrawAllocation")
@Override
public void onDraw(Canvas canvas)
{
//load the bitmap
loadBitmap();
// init shader
if(image !=null)
{
shader = new BitmapShader(Bitmap.createScaledBitmap(image, canvas.getWidth(), canvas.getHeight(), false), Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
paint.setShader(shader);
int circleCenter = viewWidth/2;
// circleCenter is the x or y of the view's center
// radius is the radius in pixels of the cirle to be drawn
// paint contains the shader that will texture the shape
canvas.drawCircle(circleCenter + borderWidth, circleCenter + borderWidth, circleCenter + borderWidth, paintBorder);
canvas.drawCircle(circleCenter + borderWidth, circleCenter + borderWidth, circleCenter, paint);
}
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
{
int width = measureWidth(widthMeasureSpec);
int height = measureHeight(heightMeasureSpec, widthMeasureSpec);
viewWidth = width - (borderWidth *2);
viewHeight = height - (borderWidth*2);
setMeasuredDimension(width, height);
}
private int measureWidth(int measureSpec)
{
int result = 0;
int specMode = MeasureSpec.getMode(measureSpec);
int specSize = MeasureSpec.getSize(measureSpec);
if (specMode == MeasureSpec.EXACTLY) {
// We were told how big to be
result = specSize;
} else {
// Measure the text
result = viewWidth;
}
return result;
}
private int measureHeight(int measureSpecHeight, int measureSpecWidth) {
int result = 0;
int specMode = MeasureSpec.getMode(measureSpecHeight);
int specSize = MeasureSpec.getSize(measureSpecHeight);
if (specMode == MeasureSpec.EXACTLY) {
// We were told how big to be
result = specSize;
} else {
// Measure the text (beware: ascent is a negative number)
result = viewHeight;
}
return result;
}
}
这是我如何调用它的XML:
<com.roundimage.support.CircularImageView
android:id="@+id/item_pic"
android:layout_width="70dp"
android:layout_height="70dp"
android:src="@drawable/example_id" />
这怎么保持这样的:
以及如何图像确实是:
并针对不同的图像大小不同,对于diferent分辨率不同的设备时,图像会出现在不同的方式..
尝试使用scaleType在XML是fitXY
机器人:ScaleType =“fitXY”
或程序
imageview.setScaleType(ScaleType.FITXY)
如果它不工作,尝试另一种scaletype。
编辑:看到这个职位here。
好的,你的代码应该可以正常工作,但是它会将图像放在图像视图中,而不用调整大小以适合查看器,因为你有这些结果。在本教程中
android:scaleType="fitCenter"
阅读模式这个问题::正确http://www.peachpit.com/articles/article.aspx?p=1846580&seqNum=2
@youssefhassan链接指向它:
尝试在布局添加该
你必须调整您的图像所需大小:
` private void loadBitmap() { BitmapDrawable bitmapDrawable =(BitmapDrawable)this.getDrawable();
if(bitmapDrawable != null) {
int size = getPixelsFromDp(70);
Bitmap imageRealSize = bitmapDrawable.getBitmap();
image = Bitmap.createScaledBitmap(imageRealSize, size, size, true);
}
}
` 其中“getPixelsFromDp”是一个函数来获取DP的你在像素上添加XML(你可以找到的页面负载,以获取其实现)
没有工作......其中任何:( – user3050910
请参阅编辑... – youssefhassan