布局xml转bitmap

代码：

        //获取屏幕大小        DisplayMetrics dm = activity.getResources().getDisplayMetrics();        int newWidth = dm.widthPixels;        int newHeight = dm.heightPixels;        View view = activity.getLayoutInflater().inflate(R.layout.cs_screenshot, null);        //打开图像缓存        view.setDrawingCacheEnabled(true);         //必须调用measure和layout方法才能成功保存可视组件的截图到png图像文件        //测量View大小(这样能保证测量的和实际显示的大小一致，720/1280为屏幕大小，                   MeasureSpec.AT_MOST/EXACTLY允许view的最大大小/精确大小)        view.measure(View.MeasureSpec.makeMeasureSpec(720, View.MeasureSpec.EXACTLY),                View.MeasureSpec.makeMeasureSpec(1280, View.MeasureSpec.EXACTLY));        //不能全屏（和真实显示大小不一致）        //view.measure(View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED),       //         View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));        view.layout(0, 0, view.getMeasuredWidth(), view.getMeasuredHeight());        try {            //获得可视组件的截图            Bitmap bitmap = view.getDrawingCache();            //将截图保存在SD卡根目录的test.png图像文件中            String sdcardPath = getSDCardPath(activity);            String fileName = getFileName() + ".png";            String filePath = sdcardPath + "/" + fileName;            FileOutputStream fos = new FileOutputStream(filePath);            //将Bitmap对象中的图像数据压缩成png格式的图像数据，并将这些数据保存在test.png文件中            bitmap.compress(Bitmap.CompressFormat.PNG, 100, fos);            //关闭文件输出流            fos.close();            //上面的步骤已经把xml转成bitmap保存到filePath中            //插入到相册通知图库更新             File file = new File(filePath);            try {                MediaStore.Images.Media.insertImage(activity.getContentResolver(),                        file.getAbsolutePath(), fileName, null);            } catch (FileNotFoundException e) {                e.printStackTrace();            }            // 最后通知图库更新            activity.sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.parse("file://" + Environment.getExternalStorageDirectory().getPath())));            Log.d("tag", "通知成功");          }          catch (Exception e) {            Log.e("tag", "保存出错：" + e.toString());        }