Android活动在尝试停止视频录制时没有响应

我从一个活动开始录制视频。然后，我想暂停我的活动，但当我尝试在恢复活动后停止录像时，它没有响应

public void recordVideo(View view)
{


Button videoRecordingButton = (Button)findViewById(R.id.videorecordingbutton);
Log.d("tag",String.valueOf(isRecording));
if(isRecording==false)
{
   cameraView.prepareVideoRecorder();
   mediaRecorder = cameraView.mMediaRecorder;
    mediaRecorder.start();

    isRecording = true;

videoRecordingButton.setText("Stop");

}
else
{
    Log.d("####","####before mediaRecorder.stop()");

    mediaRecorder.stop();
    Log.d("####","####after mediaRecorder.stop()");
    isRecording = false;
    videoRecordingButton.setText("Start");

}