您需要使用 AudioManager 类。开发者文档是这里。根据您想要的音量调节（振铃/媒体），您可能需要通过 AudioManager 更改audiomode。

You need to use the AudioManager class. Developer doc is here. Depending on which volume you want to adjust (ringer/media) you may need to change the audiomode via AudioManager.

最后，为了使按钮消失只是使用View.GONE他们。我想创建一个的Runnable 在 onClickListener 和使用 postDelayed 让查看消失。

Finally, to make the buttons disappear just use View.GONE on them. I would create a Runnable in the onClickListener and use a postDelayed to make the View disappear.