RecyclerView 和 Firebase Storage 快速滚动 ExoPlayer 异常

Question

所以我有一个 android 应用程序，它读取存储在 Firebase 实时数据库中的一些 Firebase Storage 下载 URL。我还使用 RecyclerView 来渲染一些播放这些视频的 ExoPlayers。 问题是，如果我滚动得非常快，则没有足够的时间来渲染所有内容，并且程序会引发异常。 我想我有太多的 ExoPlayers 被保留，当我需要移除它们时，我需要继续前进。我该怎么做？

E/ExoPlayerImplInternal: Renderer error: index=0, type=video, format=Format(1, null, null, video/avc, null, -1, null, [640, 480, 29.997072], [-1, -1]), rendererSupport=YES
      com.google.android.exoplayer2.ExoPlaybackException: com.google.android.exoplayer2.mediacodec.MediaCodecRenderer$DecoderInitializationException: Decoder init failed: OMX.Exynos.avc.dec, Format(1, null, null, video/avc, null, -1, null, [640, 480, 29.997072], [-1, -1])
 at com.google.android.exoplayer2.BaseRenderer.createRendererException(BaseRenderer.java:359)
        at com.google.android.exoplayer2.mediacodec.MediaCodecRenderer.maybeInitCodec(MediaCodecRenderer.java:563)
        at com.google.android.exoplayer2.mediacodec.MediaCodecRenderer.onInputFormatChanged(MediaCodecRenderer.java:1254)
        at com.google.android.exoplayer2.video.MediaCodecVideoRenderer.onInputFormatChanged(MediaCodecVideoRenderer.java:756)
        at com.google.android.exoplayer2.mediacodec.MediaCodecRenderer.readToFlagsOnlyBuffer(MediaCodecRenderer.java:814)
        at com.google.android.exoplayer2.mediacodec.MediaCodecRenderer.render(MediaCodecRenderer.java:712)
        at com.google.android.exoplayer2.ExoPlayerImplInternal.doSomeWork(ExoPlayerImplInternal.java:599)
        at com.google.android.exoplayer2.ExoPlayerImplInternal.handleMessage(ExoPlayerImplInternal.java:329)
        at android.os.Handler.dispatchMessage(Handler.java:103)
        at android.os.Looper.loop(Looper.java:237)
        at android.os.HandlerThread.run(HandlerThread.java:67)

这是 RecyclerView 代码：

   FirebaseRecyclerOptions<MediaObject> options =
                new FirebaseRecyclerOptions.Builder<MediaObject>()
                        .setQuery(databaseReference.orderByChild("title"), MediaObject.class)
                        .build();

        FirebaseRecyclerAdapter<MediaObject, ViewHolder> firebaseRecyclerAdapter =
                new FirebaseRecyclerAdapter<MediaObject, ViewHolder>(options) {
                    @Override
                    protected void onBindViewHolder(@NonNull ViewHolder viewHolder, int i, @NonNull MediaObject mediaObject) {
                        viewHolder.setVideo(getApplication(), mediaObject.getTitle().replace(".mp4", ""), mediaObject.getMedia_url());
                    }

                    @NonNull
                    @Override
                    public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
                        View view = LayoutInflater.from(parent.getContext())
                                .inflate(R.layout.activity_view_extended_videolist, parent, false);

                        return new ViewHolder(view);
                    }
                };

        firebaseRecyclerAdapter.startListening();
        recycleView.setAdapter(firebaseRecyclerAdapter);

ViewHolder 代码：

public class ViewHolder extends RecyclerView.ViewHolder {

    private View mView;
    private SimpleExoPlayer exoPlayer;
    private PlayerView mExoPlayerView;

    public ViewHolder(@NonNull View itemView) {
        super(itemView);
        mView = itemView;
    }

    public void setVideo(final Application ctx, String title, String url) {
        TextView mTextView = mView.findViewById(R.id.titleTv);
        mExoPlayerView = mView.findViewById(R.id.exoplayer_view);

        mTextView.setText(title);
        try {
            BandwidthMeter bandwidthMeter = new DefaultBandwidthMeter.Builder(ctx).build();
            TrackSelector trackSelector = new DefaultTrackSelector(new AdaptiveTrackSelection.Factory(bandwidthMeter));
            exoPlayer = ExoPlayerFactory.newSimpleInstance(ctx);
            Uri video = Uri.parse(url);
            DefaultHttpDataSourceFactory dataSourceFactory = new DefaultHttpDataSourceFactory("2020-04-12");
            ExtractorsFactory extractorsFactory = new DefaultExtractorsFactory();
            MediaSource mediaSource = new ExtractorMediaSource(video, dataSourceFactory, extractorsFactory, null, null);
            mExoPlayerView.setPlayer(exoPlayer);
            exoPlayer.prepare(mediaSource);
            exoPlayer.setPlayWhenReady(false);
        }catch (Exception e){
            Log.d("ViewHolder", "exoplayer error " + e.toString());
        }
    }
}

Answer 1

我最终只使用 exoPlayer.release()