android系统各种音量的获取与设置

获取系统音量

通过程序获取android系统手机的铃声和音量。同样,设置铃声和音量的方法也很简单!

设置音量的方法也很简单,AudioManager提供了方法:
publicvoidsetStreamVolume(intstreamType,intindex,intflags)其中streamType有内置的常量,去文档里面就可以看到。

JAVA代码:
AudioManager mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);

//通话音量

int max = mAudioManager.getStreamMaxVolume( AudioManager.STREAM_VOICE_CALL );
int current = mAudioManager.getStreamVolume( AudioManager.STREAM_VOICE_CALL );
Log.d(“VIOCE_CALL”, “max : ” + max + ” current : ” + current);

//系统音量

max = mAudioManager.getStreamMaxVolume( AudioManager.STREAM_SYSTEM );
current = mAudioManager.getStreamVolume( AudioManager.STREAM_SYSTEM );
Log.d(“SYSTEM”, “max : ” + max + ” current : ” + current);

//铃声音量

max = mAudioManager.getStreamMaxVolume( AudioManager.STREAM_RING );
current = mAudioManager.getStreamVolume( AudioManager.STREAM_RING );
Log.d(“RING”, “max : ” + max + ” current : ” + current);

//音乐音量

max = mAudioManager.getStreamMaxVolume( AudioManager.STREAM_MUSIC );
current = mAudioManager.getStreamVolume( AudioManager.STREAM_MUSIC );
Log.d(“MUSIC”, “max : ” + max + ” current : ” + current);

//提示声音音量

max = mAudioManager.getStreamMaxVolume( AudioManager.STREAM_ALARM );
current = mAudioManager.getStreamVolume( AudioManager.STREAM_ALARM );
Log.d(“ALARM”, “max : ” + max + ” current : ” + current);
ps:
  游戏过程中只允许调整多媒体音量,而不允许调整通话音量。
  setVolumeControlStream(AudioManager.STREAM_MUSIC);
  长时间不动,不允许黑屏,View.setKeepScreenOn(true);
  估计manifest文件中需要注册权限吧

 

调节媒体音量

AudioManager audio = (AudioManager) getSystemService(Service.AUDIO_SERVICE);

重写 Activity 的 onKeyDown 方法

?
@Override
public boolean onKeyDown( int keyCode, KeyEvent event) {
     switch (keyCode) {
     case KeyEvent.KEYCODE_VOLUME_UP:
         audio.adjustStreamVolume(
             AudioManager.STREAM_MUSIC,
             AudioManager.ADJUST_RAISE,
             AudioManager.FLAG_PLAY_SOUND | AudioManager.FLAG_SHOW_UI);
         return true ;
     case KeyEvent.KEYCODE_VOLUME_DOWN:
         audio.adjustStreamVolume(
             AudioManager.STREAM_MUSIC,
             AudioManager.ADJUST_LOWER,
             AudioManager.FLAG_PLAY_SOUND | AudioManager.FLAG_SHOW_UI);
         return true ;
     default :
         break ;
     }
     return super .onKeyDown(keyCode, event);
}
 

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