java.lang.IllegalStateException : Another SimpleCache instance uses the folder: 错误

Question

我有这个错误 “java.lang.IllegalStateException:另一个 SimpleCache 实例使用文件夹:” 我正在使用 SimpleExoPlayer，当我第二次尝试打开视频时出现此错误 如何关闭或删除之前的simplecache？ 这是我的代码:

 SimpleExoPlayerView simpleExoPlayerView = findViewById(R.id.video_view);

        SimpleExoPlayer player = ExoPlayerFactory.newSimpleInstance(this, new DefaultTrackSelector(new DefaultBandwidthMeter.Builder().build()));

        SimpleCache downloadCache = new SimpleCache(new File(getCacheDir(), "exoCache"), new NoOpCacheEvictor());

        String uri = "http://dash.akamaized.net/akamai/bbb/bbb_1280x720_60fps_6000k.mp4";

        DataSource.Factory dataSourceFactory = new CacheDataSourceFactory(downloadCache, new DefaultDataSourceFactory(this, "seyed"));

        MediaSource mediaSource = new ExtractorMediaSource.Factory(dataSourceFactory).createMediaSource(Uri.parse(uri));

        player.prepare(mediaSource);

        simpleExoPlayerView.setPlayer(player);

        player.setPlayWhenReady(true);

Answer 1

您需要将您的缓存类设置为 Singleton 以确保您在所有应用程序中都有一个 SimpleCache 实例:

public class VideoCache {
    private static SimpleCache sDownloadCache;

    public static SimpleCache getInstance(Context context) {
        if (sDownloadCache == null) sDownloadCache = new SimpleCache(new File(context.getCacheDir(), "exoCache"), new NoOpCacheEvictor(), new ExoDatabaseProvider(context));
        return sDownloadCache;
    }
}

并在您的代码中使用它，例如:

DataSource.Factory dataSourceFactory = new CacheDataSourceFactory(VideoCache.getInstance(this), new DefaultDataSourceFactory(this, "seyed"));