Android 截取屏幕

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需要利用view.measure() 金额 view.layout方法，先利用view.setDrawingCachEnabled(true)和view.getDrawingCache(）来获取Bitmap 然后再bitmap中进行操作

代码如下：

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.view.View;//获取指定Activity的截屏，保存到png文件public class ScreenShot {          private static Bitmap takeScreenShot(Activity activity) {        // View是你需要截图的View        View view = activity.getWindow().getDecorView();        view.setDrawingCacheEnabled(true);        view.buildDrawingCache();        Bitmap b1 = view.getDrawingCache();        // 获取状态栏高度        Rect frame = new Rect();        activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);        int statusBarHeight = frame.top;        System.out.println(statusBarHeight);        // 获取屏幕长和高        int width = activity.getWindowManager().getDefaultDisplay().getWidth();        int height = activity.getWindowManager().getDefaultDisplay()                .getHeight();        // 去掉标题栏 //Bitmap b = Bitmap.createBitmap(b1, 0, 25, 320, 455);        Bitmap b = Bitmap.createBitmap(b1, 0, statusBarHeight, width, height                - statusBarHeight);        view.destroyDrawingCache();        return b;    } // 保存到sdcard      private static void savePic(Bitmap b, String strFileName) {          FileOutputStream fos = null;        try {            fos = new FileOutputStream(strFileName);            if (null != fos) {                b.compress(Bitmap.CompressFormat.PNG, 90, fos);                fos.flush();                fos.close();            }        } catch (FileNotFoundException e) {            e.printStackTrace();        } catch (IOException e) {            e.printStackTrace();        }    }      // 程序入口    public static void shoot(Activity a) {        ScreenShot.savePic(ScreenShot.takeScreenShot(a), Environment.getExternalStorageDirectory()+"/xx.png");    }}

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