如何檢測音量是否設置爲靜音？

Question

當我開發Android應用程序時，如何檢測音量是否設置爲靜音？

如果音量變爲靜音或取消靜音，我的應用程序如何得到通知？

Answer 1

您可以使用AudioManager檢查音量是靜音還是非靜音。

AudioManager audio = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE); 
switch(audio.getRingerMode()){ 
case AudioManager.RINGER_MODE_NORMAL: 
    break; 
case AudioManager.RINGER_MODE_SILENT: 
    break; 
case AudioManager.RINGER_MODE_VIBRATE: 
    break; 
} 

並且對於音量改變，存在BroadcastReceiver。

public class VolumeKeyReceiver extends BroadcastReceiver { 
    @Override 
    public void onReceive(Context context, Intent intent) { 
     //Implement Logic 
    } 
} 

註冊的BroadcastReceiver

VolumeKeyReceiver keyReceiver = new VolumeKeyReceiver(); 
IntentFilter intentFilter = new IntentFilter(); 
intentFilter.addAction("android.media.VOLUME_CHANGED_ACTION"); 
registerReceiver(keyReceiver, intentFilter);