Android Alarm Volume increase gradually

android, android-alarms, android-audiomanager, media, volume

Solution

You can do it by yourself. Nothing complicated in it.

Once your `PendingIntent` is triggered, make use of handlers to do the increasing.

Create class that will take the `AudioManager` or `Context` of the app as argument.

  public class VolumeRunnable implements Runnable{

private AudioManager mAudioManager;
private Handler mHandlerThatWillIncreaseVolume;
private final static int DELAY_UNTILL_NEXT_INCREASE = 30*1000;//30 seconds between each increment
VolumeRunnable(AudioManager audioManager, Handler handler){
   this.mAudioManager = audioManager;
   this.mHandlerThatWillIncreaseVolume = handler;
}

@Override
public void run(){
   int currentAlarmVolume = mAudioManager.getStreamVolume(AudioManager.STREAM_ALARM);
   if(currentAlarmVolume != mAudioManager.getStreamMaxVolume(AudioManager.STREAM_ALARM)){ //if we havent reached the max

   //here increase the volume of the alarm stream by adding currentAlarmVolume+someNewFactor
        mHandlerThatWillIncreaseVolume.postDelayed(this,DELAY_UNTILL_NEXT_INCREASE); //"recursively call this runnable again with some delay between each increment of the volume, untill the condition above is satisfied. 
   }

}

}

Call this `Runnable` once the `PendingIntent` is triggered:

someHandler.post(new VolumeRunnable(mAudioManager, someHandler));

I hope this gave you idea. Forgive any mistakes or typos.

Problem

Original source