Exoplayer-在片段内旋转时保存和还原状态 [英] Exoplayer - Save and Restore State On Rotation Within Fragment

问题描述

我有一个托管SimpleExoplayer的片段.我想确保我能正确处理屏幕旋转.现在，播放器将重置为屏幕旋转的开始.我已经在onStart()和onResume()中实现了方法，所以我很好奇我还需要什么其他代码:

I have a fragment that hosts a SimpleExoplayer. I want to ensure I am handling screen rotation properly. Right now, the player resets to the beginning on screen rotation. I already have methods implement in onStart() and onResume(), so I am curious what additional code I would need:

    @Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    View v = inflater.inflate(R.layout.fragment_recipe_details_three, container,false);

    ............

    mStepDescription.setText(step.getDescription());
    mVideoURL = step.getVideoURL();
    mSimpleExoPlayer = v.findViewById(R.id.exoplayer);
    mExoPlayerPlaceholder = v.findViewById(R.id.exoplayer_placeholder);
    if (mVideoURL == null || mVideoURL.isEmpty()){
        mSimpleExoPlayer.setVisibility(View.GONE);
        mExoPlayerPlaceholder.setVisibility(View.VISIBLE);
    }


    return v;
}

onStart:

    @Override
public void onStart() {
    super.onStart();
    initializePlayer();
}

onPause:

    @Override
public void onPause() {
    super.onPause();
    if (mExoPlayer!=null) {
        mExoPlayer.release();
        mExoPlayer = null;
    }
}

初始化:

private void initializePlayer(){
    // Create a default TrackSelector
    BandwidthMeter bandwidthMeter = new DefaultBandwidthMeter();
    TrackSelection.Factory videoTrackSelectionFactory =
            new AdaptiveTrackSelection.Factory(bandwidthMeter);
    TrackSelector trackSelector =
            new DefaultTrackSelector(videoTrackSelectionFactory);

    //Initialize the player
    mExoPlayer = ExoPlayerFactory.newSimpleInstance(getContext(), trackSelector);
    mSimpleExoPlayer.setPlayer(mExoPlayer);


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

    // Produces Extractor instances for parsing the media data.
    ExtractorsFactory extractorsFactory = new DefaultExtractorsFactory();



    // This is the MediaSource representing the media to be played.
    Uri videoUri = Uri.parse(mVideoURL);
    MediaSource videoSource = new ExtractorMediaSource(videoUri,
            dataSourceFactory, extractorsFactory, null, null);

    // Prepare the player with the source.
    mExoPlayer.prepare(videoSource);
}

推荐答案

您无需为此更改清单.以下代码应该可以工作

You shouldn't need to change the manifest for this. The following code should work

override fun onSaveInstanceState(outState: Bundle) {
    outState.putLong(KEY_PLAYER_POSITION, exoPlayer.contentPosition)
    outState.putBoolean(KEY_PLAYER_PLAY_WHEN_READY, exoPlayer.playWhenReady)
}

override fun onViewStateRestored(savedInstanceState: Bundle?) {
    super.onViewStateRestored(savedInstanceState)
    savedInstanceState?.let {
        exoPlayer.seekTo(it.getLong(KEY_PLAYER_POSITION))
        exoPlayer.playWhenReady = it.getBoolean(KEY_PLAYER_PLAY_WHEN_READY)
    }
}

这篇关于Exoplayer-在片段内旋转时保存和还原状态的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！