问题
I am trying to get the ring volume, but it always gives 0, regardless of what volume I have set it to (I do this by accessing it via Settings on the phone).
audioManager.getstreamVolume(AudioManager.STREAM_RING)
The same API works properly with the other audio streams AudioManager.STREAM_NOTIFICATION, AudioManager.STREAM_MUSIC, etc. Could anyone let me know why this is happening and how I can correct it?
回答1:
Your code is correct. The call returns 0 when your phone is in mute or vibration mode. Checkout your ringer mode.
audioManager.setRingerMode(ringerMode);
来源：https://stackoverflow.com/questions/22448654/audiomanager-getstreamvolumeaudiomanager-stream-ring-always-returning-0