在静音模式下在Android应用中手动将声音静音吗？

Question

I have tried finding an answer to this, but my searches kept returning irrelevant results...
So the problem is - I am writing a game that plays sound effects (no music just yet), and I set the stream type to Music. However, when I put my phone in silent mode (no vibration either, if that matters) the app still plays sounds. I can turn off the sound in the app using the volume keys, but what I expected (and what my future users would probably expect too) was that the app won't make a sound when the phone is in silent mode.

At this point, I am not sure if this should be automatically managed by the OS, or if I am expected to do something about it. I can surely detect the silent mode, set the volume to 0 in eg onResume , but that will probably overwrite the setting the users set up by pressing the volume buttons - so when they unmute the phone, the app either has to set the volume programmatically to a predefined value, or ideally, to a saved one from sharedPrefs... which sounds relatively cumbersome. Is there a nicer solution?

This is how I initialize & then use sounds:

soundPool = new SoundPool(5, AudioManager.STREAM_MUSIC, 100);
soundPoolMap = new SparseIntArray();
soundPoolMap.put(CLICK_1, soundPool.load(activity, R.raw.click1, 1));
soundPoolMap.put(CLICK_2, soundPool.load(activity, R.raw.click2, 2));
...
float volume = 1.0f;
soundPool.play(soundPoolMap.get(soundID), volume, volume, 1, 0, 1f);

Answer 1

What I understand from your question is you want to mute your app when device is on silent mode .

Try to check the the RingerMode every time before your app play sound/music and play sound only when the ringer RingerMode is normal.

Here is the sample code.

AudioManager audio = (AudioManager) mContext.getSystemService(Context.AUDIO_SERVICE);
switch (audio.getRingerMode())
{
    case AudioManager.RINGER_MODE_NORMAL:
    // Device is on Normal mode.
    // you can play music.
    break; 
    case AudioManager.RINGER_MODE_SILENT:
    // Device is on Silent mode.
    // you should not play sound now.
    break;
    case AudioManager.RINGER_MODE_VIBRATE:
    // Device is on Vibrate/Meeting mode.
    // you should not play sound but you can make vibrate device (if you want).
    break;
}