依据Uri加载相册中图片

//为什么使用getContentResolver呢？因为在相册本身是一个内容提供者    protected void onActivityResult(int requestCode, int resultCode, Intent data) {    super.onActivityResult(requestCode, resultCode, data);    Uri photoFileUri=data.getData();if (requestCode==OK) {try {Bitmap bitmap=BitmapFactory.decodeStream(getContentResolver().openInputStream(photoFileUri));} catch (Exception e) {e.printStackTrace();}}    }