通过绘图缓存(DrawingCache)捕获屏幕-Android捕获屏幕

来源：互联网发布：yum 默认安装目录编辑：程序博客网时间：2024/05/28 16:20

转自：http://androidbiancheng.blogspot.com/2011/05/drawingcache.html

当点击按钮，本应用程序会通过绘图缓存(DrawingCache)捕获屏矵显示，并显示在imageView中，效果如下图：

主Activity:

package com.AndroidScreenCapture; import android.app.Activity;import android.graphics.Bitmap;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.ImageView; public class AndroidScreenCapture extends Activity {   View myscreen; ImageView viewScreen;      /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        //setContentView(R.layout.main);        setContentView(R.layout.main);        myscreen = (View)findViewById(R.id.myscreen);        Button buttonCapture = (Button)findViewById(R.id.capture);        viewScreen = (ImageView)findViewById(R.id.screenview);                 buttonCapture.setOnClickListener(new Button.OnClickListener(){    @Override   public void onClick(View arg0) {    // TODO Auto-generated method stub    myscreen.setDrawingCacheEnabled(true);          Bitmap bmScreen = myscreen.getDrawingCache();          viewScreen.setImageBitmap(bmScreen);   }});    }}

XML布局：

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:id="@+id/myscreen"    ><TextView     android:layout_width="fill_parent"    android:layout_height="wrap_content"    android:text="@string/hello"    /><Button     android:id="@+id/capture"    android:layout_width="fill_parent"    android:layout_height="wrap_content"    android:text="Capture Screen!"    /><ImageView    android:id="@+id/screenview"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    /></LinearLayout>