取得当前屏幕的截图

文章出处：http://gundumw100.iteye.com/blog/1104772

 

取得当前屏幕的截图主要使用了Bitmap 类里的方法，首相取得一个bitmap 然后用取得的bitmap 去绘制一张图片然后进行保存。

 

import java.io.FileNotFoundException;  
import java.io.FileOutputStream;  
import java.io.IOException;  
import android.app.Activity;  
import android.graphics.Bitmap;  
import android.graphics.Rect;  
import android.os.Environment;  
import android.util.Log;  
import android.view.View;  
public class ShotScreen {  
      
    private static final String TAG="shotscreen";  
    @SuppressWarnings("unused")  
    private static Bitmap takeScreenShot(Activity activity){  
        View view =activity.getWindow().getDecorView();  
        view.setDrawingCacheEnabled(true);  
        view.buildDrawingCache();  
        Bitmap bitmap = view.getDrawingCache();  
        Rect rect = new Rect();  
        activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(rect);  
        int statusBarHeight = rect.top;  
        System.out.println(statusBarHeight);  
          
        int width =activity.getWindowManager().getDefaultDisplay().getWidth();  
        int height =activity.getWindowManager().getDefaultDisplay().getHeight();  
          
        Bitmap bitmap2 = Bitmap.createBitmap(bitmap,0,statusBarHeight, width, height - statusBarHeight);  
        view.destroyDrawingCache();  
        return bitmap2;  
    }  
      
    @SuppressWarnings("unused")  
    private static void savePic(Bitmap bitmap,String filename){  
        FileOutputStream fileOutputStream = null;  
        try {  
            fileOutputStream = new FileOutputStream(filename);  
            if (fileOutputStream != null) {  
                bitmap.compress(Bitmap.CompressFormat.PNG, 90, fileOutputStream);  
                fileOutputStream.flush();  
                fileOutputStream.close();  
            }  
        } catch (FileNotFoundException e) {  
            Log.d(TAG, "Exception:FileNotFoundException");  
            e.printStackTrace();  
        } catch (IOException e) {  
            Log.d(TAG, "IOException:IOException");  
            e.printStackTrace();  
        }  
    }  
      
      
    /** 
     *  
     * @param a 
     */  
    public static void shoot(Activity a){  
        if (android.os.Environment.MEDIA_MOUNTED != "mounted") {  
            ShotScreen.savePic(ShotScreen.takeScreenShot(a), "/sdcard/抽样.png");     
        }else{  
            ShotScreen.savePic(ShotScreen.takeScreenShot(a), "/data/data/"+a.getPackageName()+"/抽样.png");  
        }  
    }