现在可以了，我使用了这段代码

it's okay now, i used this code

AudioManager audioManager = (AudioManager)context.getSystemService(Context.AUDIO_SERVICE);
    int maxVolumeMusic = audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
    audioManager.setRingerMode(AudioManager.RINGER_MODE_NORMAL);
    audioManager.setStreamVolume(AudioManager.STREAM_MUSIC, maxVolumeMusic,AudioManager.FLAG_REMOVE_SOUND_AND_VIBRATE);