android如何获取和设置系统铃声和音量大小

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：

public voidsetStreamVolume(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);