在片段选择/选定的视频中，然后在onActivityResult使用startActivityForResult获得黑屏后回调到onActivityResult中的片段

Question

这周我开发了应用程序Video Recorder，需要插入缩略图，如果单击缩略图则选择/选择视频

public class VideoRecorderFragment extends Fragment implements View.OnClickListener, ActivityCompat.OnRequestPermissionsResultCallback {
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);

    if (resultCode == RESULT_OK) {
        if (requestCode == REQUEST_TAKE_GALLERY_VIDEO) {
            Log.i(TAG,"requestCode == REQUEST_TAKE_GALLERY_VIDEO:"+(requestCode == REQUEST_TAKE_GALLERY_VIDEO));
            Uri selectedMediaUri = data.getData();
            Log.i(TAG,"selectedMediaUri:"+selectedMediaUri);
            String selectedMediaPath = getPath(selectedMediaUri);
            Log.i(TAG,"selectedMediaPath:"+selectedMediaPath);

            Intent intent = new Intent();
            intent.setClass(getActivity(), VideoEditViewControllerActivity.class);
            intent.putExtra("currentVideoPath", selectedMediaPath);
            startActivityForResult(intent, 01);
            Log.i(TAG, "onActivityResult...end");
        }
    }
}

public String getPath(Uri uri) {
    String[] projection = { MediaStore.Video.Media.DATA };
    Cursor cursor = getActivity().getContentResolver().query(uri, projection, null, null, null);
    if (cursor != null) {
        // HERE YOU WILL GET A NULLPOINTER IF CURSOR IS NULL
        // THIS CAN BE, IF YOU USED OI FILE MANAGER FOR PICKING THE MEDIA
        int column_index = cursor
                .getColumnIndexOrThrow(MediaStore.Video.Media.DATA);
        cursor.moveToFirst();
        return cursor.getString(column_index);
    } else
        return null;
}}

}

选择任何视频然后回调到onActivityResult，在onActivityResult调用startActivityForResult中出现黑页

public boolean onOptionsItemSelected(MenuItem item)

结果：

不知道为什么？如何在onActivityResult中启动startActivityForResult？