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MainActivity如下:

package cc.testimageviewbounds;import android.os.Bundle;import android.app.Activity;/** * Demo描述: * 给ImageView添加边框的两种实现方式 *  * 方式一: * 利用自定义的shape-->即此处的imageviewboundshape.xml * 且为ImageView设置background,即代码: * android:background="@drawable/imageviewboundshape" *  * 方式二: * 自定义ImageView * */public class MainActivity extends Activity {	@Override	protected void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		setContentView(R.layout.main);	}}

package cc.testimageviewbounds;import android.content.Context;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.graphics.Rect;import android.util.AttributeSet;import android.widget.ImageView;public class ImageViewSubClass extends ImageView {	public ImageViewSubClass(Context context, AttributeSet attrs, int defStyle) {		super(context, attrs, defStyle);	}	public ImageViewSubClass(Context context, AttributeSet attrs) {		super(context, attrs);	}	public ImageViewSubClass(Context context) {		super(context);	}		@Override	protected void onDraw(Canvas canvas) {		super.onDraw(canvas);				//获取控件需要重新绘制的区域		Rect rect=canvas.getClipBounds();		rect.bottom--;		rect.right--;		Paint paint=new Paint();		paint.setColor(Color.RED);		paint.setStyle(Paint.Style.STROKE);		paint.setStrokeWidth(3);		canvas.drawRect(rect, paint);	}   }

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