exoplayer如何播放资源raw和assets目录中的视频文

其实与播放网络资源是一致的, 这是url的格式有点不同, 特此记录一下.

先生成正常的播放代码: 写的比较随意, 大体就是这个意思

lateinit var player: SimpleExoPlayer

private fun initPlayer() {

    val bandwidthMeter = DefaultBandwidthMeter()
    val videoTrackSelectionFactory = AdaptiveTrackSelection.Factory(bandwidthMeter)
    var mTrackSelector = DefaultTrackSelector(videoTrackSelectionFactory)

    player = ExoPlayerFactory.newSimpleInstance(DefaultRenderersFactory(this),
            mTrackSelector)

    player_view.visibility = View.VISIBLE
    player_view.player = player
    player.addListener(listener)
    player.repeatMode = Player.REPEAT_MODE_ALL
    player.playWhenReady = true

    var videoUrl = videoPlayUrl

    var mVideoSource = ExtractorMediaSource.Factory(DefaultDataSourceFactory(this, "spx")).createMediaSource(Uri.parse(videoUrl)!!)
    player.prepare(mVideoSource)

}

好了重点在这里:
如果是在assets目录下的视频文件, 需要这样写:
var videoPlayUrl = "asset:///video.mp4"

如果是在raw目录下的视频文件, 需要这样写:
var videoPlayUrl = "rawresource:///"+R.raw.video