public void setUri(Uri uri) {
    if (uri == null) {
        return;
    }

    player.stop();
    prepared = false;

    DefaultHttpDataSourceFactory httpDataSourceFactory = new DefaultHttpDataSourceFactory("Aerial Dream");
    DataSource.Factory dataSourceFactory = cacheSize > 0
            ? new CacheDataSourceFactory(new SimpleCache(getContext().getCacheDir(), new LeastRecentlyUsedCacheEvictor(cacheSize), new ExoDatabaseProvider(getContext())), httpDataSourceFactory, 0)
            : httpDataSourceFactory;

    mediaSource = new ProgressiveMediaSource.Factory(dataSourceFactory)
            .createMediaSource(uri);
    player.prepare(mediaSource);
}
 

@Provides
@Singleton
ExoCreator provideExoCreator() {
    SimpleCache cache = new SimpleCache(new File(mApplication.getCacheDir(), "/toro_cache"),
            new LeastRecentlyUsedCacheEvictor(200 * 1024 * 1024), new ExoDatabaseProvider(mApplication));
    Config config = new Config.Builder(mApplication).setMediaSourceBuilder(MediaSourceBuilder.LOOPING).setCache(cache)
            .build();
    return ToroExo.with(mApplication).getCreator(config);
}
 

private Cache newCache() {
    return new SimpleCache(
            new File(mAppContext.getExternalCacheDir(), "exo-video-cache"),//缓存目录
            new LeastRecentlyUsedCacheEvictor(512 * 1024 * 1024),//缓存大小，默认512M，使用LRU算法实现
            new ExoDatabaseProvider(mAppContext));
}