[移动开发]android 实现自定义videoview全屏播放视频 kotlin

注意 videoview播放视频及时放在了 res/raw目录下，仍然需要读写权限

class MyVideoView(context: Context?, attrs: AttributeSet?, defStyleAttr: Int, defStyleRes: Int) :
    VideoView(context, attrs, defStyleAttr, defStyleRes) {

    constructor(context: Context?, attrs: AttributeSet?, defStyleAttr: Int) : this(context, attrs, defStyleAttr, 0)
    constructor(context: Context?, attrs: AttributeSet?) : this(context, attrs, 0,0)
    constructor(context: Context?) : this(context, null, 0, 0)

    override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec)
        val widthSize = View.getDefaultSize(0,widthMeasureSpec)
        val heightSize = View.getDefaultSize(0,heightMeasureSpec)
        setMeasuredDimension(widthMeasureSpec, heightMeasureSpec)
    }

}

//设置循环播放 音量 无中间黑屏
videoView.setVideoURI(Uri.parse("android.resource://$packageName/${R.raw.mainvideo}"))
        videoView.setOnPreparedListener {
            it.isLooping = true
            it.setVolume(0.5f,0.5f)
            it.start()
        }