调节音量大小

最新推荐文章于 2025-06-13 09:02:07 发布

Anla_Anla

最新推荐文章于 2025-06-13 09:02:07 发布

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CC 4.0 BY-SA版权

文章标签： Android 音量

本文链接：https://blog.youkuaiyun.com/anla_anla/article/details/10095295

public boolean onKeyDown(int keyCode, KeyEvent event) {
		AudioManager am = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
		int vol = am.getStreamVolume(AudioManager.STREAM_MUSIC);
		if (keyCode==KeyEvent.KEYCODE_VOLUME_DOWN) {
			am.setStreamVolume(AudioManager.STREAM_MUSIC, vol-1, 1);
			Toast.makeText(this, "点击了减小音量", Toast.LENGTH_SHORT).show();
			return true;
		}else if (keyCode==KeyEvent.KEYCODE_VOLUME_UP) {
			am.setStreamVolume(AudioManager.STREAM_MUSIC, vol+1, 1);
			Toast.makeText(this, "点击了增加音量", Toast.LENGTH_SHORT).show();
			return true;
		}
		return super.onKeyDown(keyCode, event);
	}