如何获得ExoPlayer 2.x的本地视频Uri

Question

我在res/raw文件夹中有一个dog.mp4视频文件，我想用ExoPlayer播放。我正试图弄清楚如何从ExoPlayer开发人员指南（https://google.github.io/ExoPlayer/guide.html）获取这行代码的视频Uri：

MediaSource videoSource = new ExtractorMediaSource(mp4VideoUri,
    dataSourceFactory, extractorsFactory, null, null);

为了得到它，我使用这一行：

Uri mp4VideoUri = Uri.parse("android.resources://"+getPackageName()+"/"+R.raw.dog);

也尝试了这种语法：android.resource://[package]/[res type]/[res name]

但SimpleExoPlayerView保持黑色，我得到以下错误：

com.google.android.exoplayer2.upstream.HttpDataSource$HttpDataSourceException: Unable to connect to android.resources://lt.wilkas.deleteexoplayer/2131099648

我究竟做错了什么？

Answer 1

我发现res/raw文件夹无法用于存储ExoPlayer的本地视频。它们应该放在assets文件夹中。

Answer 2

不要将视频从原始文件移动到任何其他文件夹

使用此代码播放视频：

    PlayerView playerView = findViewById(R.id.player_view);

    SimpleExoPlayer player = ExoPlayerFactory.newSimpleInstance(this);

    // Bind the player to the view.
    playerView.setPlayer(player);

    // Produces DataSource instances through which media data is loaded.
    DataSource.Factory dataSourceFactory = new DefaultDataSourceFactory(this, Util.getUserAgent(this, "yourApplicationName"));

    // This is the MediaSource representing the media to be played.
    MediaSource firstSource = new ExtractorMediaSource.Factory(dataSourceFactory).createMediaSource(RawResourceDataSource.buildRawResourceUri(R.raw.dog));

    // Prepare the player with the source.
    player.prepare(firstSource);