在对话框中按下音量减小时隐藏UI

Question

有没有办法在按下volume_up/volume_down键时隐藏音量ui.我知道可以通过一个活动来完成它,当它显示出对话框时,它似乎无法工作.

有解决方案吗？

Answer 1

这应该与Dialog类一起使用:

AudioManager man = (AudioManager)getSystemService(Context.AUDIO_SERVICE);
dialog.setOnKeyListener(new OnKeyListener() {
    @Override
    public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) {
        switch (event.getKeyCode()) {
            case KeyEvent.KEYCODE_VOLUME_UP:
                man.adjustStreamVolume(AudioManager.STREAM_MUSIC,
                    AudioManager.ADJUST_RAISE,
                    AudioManager.FLAG_REMOVE_SOUND_AND_VIBRATE);
                return true;
            case KeyEvent.KEYCODE_VOLUME_DOWN:
                man.adjustStreamVolume(AudioManager.STREAM_MUSIC,
                    AudioManager.ADJUST_LOWER,
                    AudioManager.FLAG_REMOVE_SOUND_AND_VIBRATE);
                return true;
           default:
                return super.onKeyDown(keyCode, event);
        }
    }
});

就像Android一样:从设备隐藏卷更改栏？

Answer 2

试试这个代码，它应该禁用卷的 toast 消息

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if ((keyCode == KeyEvent.KEYCODE_VOLUME_DOWN)){
        //Do something to hide the view
        AudioManager manager = (AudioManager)this.getSystemService(Context.AUDIO_SERVICE);
        manager.adjustVolume(AudioManager.ADJUST_LOWER, 0);
    }
    if ((keyCode == KeyEvent.KEYCODE_VOLUME_UP)){
        //Do something to hide the view
        AudioManager manager = (AudioManager)this.getSystemService(Context.AUDIO_SERVICE);
        manager.adjustVolume(AudioManager.ADJUST_RAISE, 0);
    }
    return true;
}