visualizer not working

thnaks for great library in case it is of use to anyone this is simle implementation using just java

```
public MediaPlayer mediaPlayer;
BarVisualizer barVisualizer;
RelativeLayout rel;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// setContentView(R.layout.activity_main);
rel=new RelativeLayout(this);

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (ContextCompat.checkSelfPermission(this, Manifest.permission.RECORD_AUDIO) ==
PackageManager.PERMISSION_GRANTED) {
// put your code for Version>=Marshmallow
} else {
if (shouldShowRequestPermissionRationale(Manifest.permission.RECORD_AUDIO)) {
Toast.makeText(this,
"App required access to audio", Toast.LENGTH_SHORT).show();
}
requestPermissions(new String[]{Manifest.permission.RECORD_AUDIO
}, 100);
}

} else {
// will do later
}

mediaPlayer = MediaPlayer.create(this, R.raw.sample);
mediaPlayer.start();
int id= mediaPlayer.getAudioSessionId();
if (id !=-1){
System.out.println("aaaaaaaaaaaaaa "+id);
barVisualizer=new BarVisualizer(this);
barVisualizer.setPlayer(id);//(mediaPlayer.getAudioSessionId());
barVisualizer.setVisibility(View.VISIBLE);
barVisualizer.setColor(Color.RED);
barVisualizer.setDensity(80);
rel.addView(barVisualizer);
System.out.println("bbbbbbbbbbbbbb "+id);
}else{
System.out.println("mediaplay id is null");
}
setContentView(rel);
}

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);

if (requestCode == 101) {
if (grantResults[0] != PackageManager.PERMISSION_GRANTED) {
Toast.makeText(getApplicationContext(),
" record", Toast.LENGTH_SHORT).show();
}
}
}
}
```