控件截图并通知图库更新

// 通知图库更新
void saveImageToGallery(){
       // mViewScreenShot要截图的控件
        String path = CommonUtils.saveImage(this, mViewScreenShot);
        if(!TextUtils.isEmpty(path)){
            // 最后通知图库更新
            this.sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.parse("file://" + path)));
            ToastUtils.show(this, "图片已保存至"+path);
        }

    }

    public static String saveImage(Activity activity, View v) {
        Bitmap bitmap;
        File appDir = new File(Environment.getExternalStorageDirectory(), "yourCustomerDir");
        if (!appDir.exists()) {
            appDir.mkdir();
        }
        String fileName = System.currentTimeMillis() + ".jpg";
        File file = new File(appDir, fileName);
        
       // 获取顶级视图的截图Bitmap
        View view = activity.getWindow().getDecorView();
        view.setDrawingCacheEnabled(true);
        view.buildDrawingCache();
        bitmap = view.getDrawingCache();

       /// 根据要截图的控件位置河虾从顶级视图Bitmap截取想要的控件截图Bitmap
        Rect frame = new Rect();
        activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);
        int[] location = new int[2];
        v.getLocationOnScreen(location);
        try {
            bitmap = Bitmap.createBitmap(bitmap, location[0], location[1], v.getWidth(), v.getHeight());
            FileOutputStream fout = new FileOutputStream(file);
            bitmap.compress(Bitmap.CompressFormat.PNG, 100, fout);
            return file.getAbsolutePath();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IllegalArgumentException e) {
        } finally {
            // 清理缓存
            view.destroyDrawingCache();
        }
        return null;

    }
``