How to increase ringer volume and notifications programmatically in Android

I am trying to turn on the normal ringer mode and increase the volume programmatically.

AudioManager mobilemode = (AudioManager)mContext.getSystemService(Context.AUDIO_SERVICE);
//   int streamMaxVolume = mobilemode.getStreamMaxVolume(AudioManager.STREAM_RING);
switch (mobilemode.getRingerMode()) {
    case AudioManager.RINGER_MODE_SILENT:
        Log.i("MyApp","Silent mode");

        mobilemode.setRingerMode(AudioManager.RINGER_MODE_NORMAL);
        mobilemode.setStreamVolume (AudioManager.STREAM_MUSIC,mobilemode.getStreamMaxVolume(AudioManager.STREAM_MUSIC),0);
        break;
    case AudioManager.RINGER_MODE_VIBRATE:
        Log.i("MyApp","Vibrate mode");                     
        mobilemode.setRingerMode(AudioManager.RINGER_MODE_NORMAL);
        mobilemode.setStreamVolume (AudioManager.STREAM_MUSIC,mobilemode.getStreamMaxVolume(AudioManager.STREAM_MUSIC),0);
        break;
    case AudioManager.RINGER_MODE_NORMAL:
        Log.i("MyApp","Normal mode");
        break;
}

      

        
        
        
      

    

But this allows the normal mode. But I can't turn up the volume.

Please allow me to increase the volume programmatically in any way.