Android : how to know my app's AudioRecord permission is disallowed or not

I have a problem now . My app's microphone permission was disallowed by user. So I try to solve like this :

if (audio_recorder.getRecordingState() != AudioRecord.RECORDSTATE_RECORDING) {
     //toast("the audio record permission was disallowed");
     return;
 }

The problem is that some android os devices run this code but audio_recorder.getRecordingState() always returns AudioRecord.RECORDSTATE_RECORDING. Who can help me ? Are there other ways ?