如何设置通知音量编程？ [英] How to set notification sound volume programmatically?

问题描述

我有这种方法在我的主要活动

I have this method in my main activity

private void beep()
{
    AudioManager manager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
    manager.setStreamVolume(AudioManager.STREAM_NOTIFICATION, 0,
            AudioManager.FLAG_SHOW_UI + AudioManager.FLAG_PLAY_SOUND);
    Uri notification = RingtoneManager
            .getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
    Ringtone r = RingtoneManager.getRingtone(getApplicationContext(),
            notification);
    r.play();
}

据我了解，通知音量应该由STREAM_NOTIFICATION调节。但通知始终用相同体积的，尽管在setStreamVolume方法，其卷号播放。这是为什么？

As I understand, notification sound volume should be regulated by STREAM_NOTIFICATION. But notification always plays with the same volume despite that volume number in setStreamVolume method. Why is that?

推荐答案

我去了另一种方式。这不完全回答我的问题，但恰当的。当我在玩STREAM_MUSIC通知，一切都很好。因此，通知，体积究竟扮演我传递作为参数传递给函数

I went another way. It's not exactly answer to my question but appropriate one. When I play notification in STREAM_MUSIC everything is fine. So notification plays exactly with volume I pass as parameter to the function

private void beep(int volume)
{
    AudioManager manager = (AudioManager)getSystemService(Context.AUDIO_SERVICE);
    manager.setStreamVolume(AudioManager.STREAM_MUSIC, volume, 0);

    Uri notification = RingtoneManager
            .getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);

    MediaPlayer player = MediaPlayer.create(getApplicationContext(), notification);
    player.start();
}

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