Android开发 获取当前activity的屏幕截图（转载）

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public Bitmap myShot(Activity activity) {

        // 获取windows中最顶层的view

        View view = activity.getWindow().getDecorView();

        view.buildDrawingCache();

        // 获取状态栏高度

        Rect rect = new Rect();

        view.getWindowVisibleDisplayFrame(rect);

        int statusBarHeights = rect.top;

        Display display = activity.getWindowManager().getDefaultDisplay();

        // 获取屏幕宽和高

        int widths = display.getWidth();

        int heights = display.getHeight();

        // 允许当前窗口保存缓存信息

        view.setDrawingCacheEnabled(true);

        // 去掉状态栏

        Bitmap bmp = Bitmap.createBitmap(view.getDrawingCache(), 0,

                statusBarHeights, widths, heights - statusBarHeights);

        // 销毁缓存信息

        view.destroyDrawingCache();

        return bmp;

    }

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// 将bitmap转换成drawable

BitmapDrawable bd=new BitmapDrawable(myShot());

imageView.setBackgroundDrawable(bd);  

imageView.setImageBitmap(myShot());

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private void saveToSD(Bitmap bmp, String dirName,String fileName) throws IOException {

        // 判断sd卡是否存在

        if (Environment.getExternalStorageState().equals(

                Environment.MEDIA_MOUNTED)) {

            File dir = new File(dirName);

            // 判断文件夹是否存在，不存在则创建

            if(!dir.exists()){

                dir.mkdir();

            }

            File file = new File(dirName + fileName);

            // 判断文件是否存在，不存在则创建

            if (!file.exists()) {

                file.createNewFile();

            }

            FileOutputStream fos = null;

            try {

                fos = new FileOutputStream(file);

                if (fos != null) {

                    // 第一参数是图片格式，第二个是图片质量，第三个是输出流

                    bmp.compress(Bitmap.CompressFormat.PNG, 100, fos);

                    // 用完关闭

                    fos.flush();

                    fos.close();

                }

            } catch (FileNotFoundException e) {

                // TODO Auto-generated catch block

                e.printStackTrace();

            } catch (IOException e) {

                // TODO Auto-generated catch block

                e.printStackTrace();

            }

        }

    }

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