VideoView 在弹框中播放，布局无法全部展示,静音和有声

首先附上kotlin代码：循环播放

    views.adsVideo.setVideoPath(Uri.parse(entity.data.video).toString())
            views.adsVideo.start()
            views.adsVideo.requestFocus()
            views.adsVideo.setOnErrorListener(MediaPlayer.OnErrorListener { _, _, _ ->
                views.adsVideo.stopPlayback() //播放异常，则停止播放，防止弹窗使界面阻塞
                true
            })
            views.adsVideo.setOnCompletionListener(MediaPlayer.OnCompletionListener { mPlayer ->
                mPlayer.start()
                mPlayer.setLooping(true)
            }
            )

问题出现：播放的时候，直接展示在顶部，尝试了一下，修改高度，原因是heightMeasureSpec应该是从顶部算的，然后减去getHeight()，完美展示

public class CustomVideoView extends VideoView {

    public CustomVideoView(Context context) {
        this(context, null);
    }

    public CustomVideoView(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public CustomVideoView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        int width = getDefaultSize(getWidth(), widthMeasureSpec);
      //修改在这
        int height = getDefaultSize(getHeight(), heightMeasureSpec-getHeight());
        setMeasuredDimension(width, height);
    }
}

循环播放

  views.adsVideo.setOnCompletionListener(MediaPlayer.OnCompletionListener { mPlayer ->
                mPlayer.start()
                mPlayer.isLooping=true
            }
            )

//播放异常，则停止播放，防止弹窗使界面阻塞

 views.adsVideo.setOnErrorListener(MediaPlayer.OnErrorListener { _, _, _ ->
                views.adsVideo.stopPlayback() //播放异常，则停止播放，防止弹窗使界面阻塞
                views.videoLayout.isVisible = false
                views.adsBaner.isVisible = true
                true
            })

默认有声播放，获取 mediaPlayer

 private var slience: Boolean = false
    private var mediaPlayer: MediaPlayer? = null
   views.adsVideo.setOnPreparedListener(MediaPlayer.OnPreparedListener { mp ->
                mediaPlayer = mp
                mp.setVolume(1f, 1f)
            })

点击按钮进行切换

 views.btVoice.setOnClickListener {
                if (mediaPlayer != null) {
                    if (!slience) {
                        mediaPlayer?.setVolume(0f, 0f) //静音
                    } else {
                        mediaPlayer?.setVolume(1f, 1f) //有声
                    }
                    slience = !slience
                    if (slience) {
                        views.btVoice.setImageResource(R.drawable.ic_video_close)
                    } else {
                        views.btVoice.setImageResource(R.drawable.ic_video_open)
                    }
                }
            }

当用户在播放视频的时候切换到页面，再次切换回来的时候VideoView会销毁，
应该在切换的时候停止播放记，录当前的播放位置，再次切换回来的时候继续播放。

    // 视频播放的位置
    private int mVideoCurrantPosition = 0;
  override fun onResume() {
        super.onResume()
        if(videoUrl!=null){
        //再次打开继续播放视频
            views.adsVideo.seekTo(mVideoCurrantPosition)
            views.adsVideo.start()
        }
    }

    override fun onPause() {
        super.onPause()
        if(videoUrl!=null){
        //在视频播放过程中切换页面停止播放视频，记录下当前播放位置
            mVideoCurrantPosition = views.adsVideo.currentPosition
            views.adsVideo.pause()
        }
    }