Android截屏

    在网上查了好久，都找不到完整的截屏源码。要不是有的能够通过编译，但是没有反应；要是就直接在模拟器上运行的时候直接就挂掉了。修改了好久，终于搞好了一份能够完全截图的代码。完整代码：

package com.lip.screenshot;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.graphics.Canvas;
import android.os.Bundle;
import android.os.Environment;
import android.text.format.Time;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class ScreenShotActivity extends Activity
{
 /** Called when the activity is first created. */
 Button shoot;
 Time time;
 String fileName;

 @Override
 public void onCreate(Bundle savedInstanceState)
 {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
  shoot = (Button) findViewById(R.id.shoot);
  shoot.setOnClickListener(new OnClickListener()
  {

   @Override
   public void onClick(View v)
   {
    // TODO Auto-generated method stub
    time=new Time("GMT+8");
    time.setToNow();//获得当前时间
    fileName=time.year+"_"+time.month+"_"+time.monthDay+"_"+
    time.hour+"_"+time.minute+"_"+time.second+".png";//格式化文件名
    boolean b=screenShot(fileName);
    //boolean b=ScreenShot.shoot(ScreenShotActivity.this,fileName);
    if(b)
     {
         Toast.makeText(ScreenShotActivity.this,"截图成功",2000).show();
     }
   }
  });

 }
 public boolean screenShot(String fileName)
 {
  //Context context = getApplicationContext();
  View rootView = findViewById(R.id.rootLayout);
  Bitmap newb = Bitmap.createBitmap(320, 480, Config.ARGB_8888);
  Canvas canvas = new Canvas(newb);
  rootView.draw(canvas);
  File file = new File(Environment.getExternalStorageDirectory()+ "/" + fileName);
  FileOutputStream f = null;
  try
  {

   f = new FileOutputStream(file);

  }
  catch (FileNotFoundException e)
  {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  boolean shoot = newb.compress(Bitmap.CompressFormat.PNG, 100, f);
  return shoot;
 }
}

   通过调用screenShot函数，可以生成一个以filename.png的图片保存在sd卡的根目录。

   还有一点非常重要。就是获取Sd卡的读写权限。在AndroidManifest.XML文件中增加如下代码：

       <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />

  这样 就可以在成功截屏了。

  欢迎交流。