我正在尝试在此设备中播放本地文件
String filePath="/storage/emulated/0/MyFiles/Media/Video/Xvid1509401908940.mp4"
File file=new File(filePath);
Uri localUri=Uri.fromFile(file);
exoPlayer_main.initializePlayer(localUri);
获取ClassCastException
11-01 04:45:23.356 27145-29468/com.example.com.pro_working1 E/LoadTask: Unexpected exception loading stream
java.lang.ClassCastException: libcore.net.url.FileURLConnection cannot be cast to java.net.HttpURLConnection
at com.google.android.exoplayer2.upstream.DefaultHttpDataSource.makeConnection(DefaultHttpDataSource.java:393)
at com.google.android.exoplayer2.upstream.DefaultHttpDataSource.makeConnection(DefaultHttpDataSource.java:350)
at com.google.android.exoplayer2.upstream.DefaultHttpDataSource.open(DefaultHttpDataSource.java:192)
at com.google.android.exoplayer2.source.ExtractorMediaPeriod$ExtractingLoadable.load(ExtractorMediaPeriod.java:692)
at com.google.android.exoplayer2.upstream.Loader$LoadTask.run(Loader.java:315)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
at java.lang.Thread.run(Thread.java:818)
11-01 04:45:23.357 27145-29468/com.example.com.pro_working1 E/LoadTask: Unexpected exception loading stream
java.lang.ClassCastException: libcore.net.url.FileURLConnection cannot be cast to java.net.HttpURLConnection
at com.google.android.exoplayer2.upstream.DefaultHttpDataSource.makeConnection(DefaultHttpDataSource.java:393)
at com.google.android.exoplayer2.upstream.DefaultHttpDataSource.makeConnection(DefaultHttpDataSource.java:350)
at com.google.android.exoplayer2.upstream.DefaultHttpDataSource.open(DefaultHttpDataSource.java:192)
at com.google.android.exoplayer2.source.ExtractorMediaPeriod$ExtractingLoadable.load(ExtractorMediaPeriod.java:692)
at com.google.android.exoplayer2.upstream.Loader$LoadTask.run(Loader.java:315)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
at java.lang.Thread.run(Thread.java:818)
我用于初始化exoplayer的ExoPlayer方法
public void initializePlayer(Uri uri){
Log.d(TAG,"Init Player Calling");
if (player==null){
Log.d(TAG,"Player Is Null Setting Up Player");
player= ExoPlayerFactory.newSimpleInstance(
new DefaultRenderersFactory(context),
new DefaultTrackSelector(),
new DefaultLoadControl());
playerView.setPlayer(player);
player.addListener(componentListener);
player.setPlayWhenReady(playWhenReady);
player.seekTo(currentWindow,playbackPosition);
MediaSource mediaSource=buildMediaSource(uri);
player.prepare(mediaSource,true,false);
}
}
private MediaSource buildMediaSource(Uri uri){
return new ExtractorMediaSource(uri,
new DefaultHttpDataSourceFactory("ua"),
new DefaultExtractorsFactory(),null,null);
}
我尝试Uri.parse(path)
并按上述方式提交,但它仍然给我ClassCastException
。请指导我如何在exoplayer中播放本地存储文件。
答案 0 :(得分:6)
我从谷歌官方Exoplayer存储库中得到了答案
DefaultDataSource支持本地和Http源。它会自动检测使用哪一个。
所以我改变了
private MediaSource buildMediaSource(Uri uri){
return new ExtractorMediaSource(uri,
new DefaultHttpDataSourceFactory("ua"),
new DefaultExtractorsFactory(),null,null);
}
到这个
private MediaSource buildMediaSource(Uri uri){
return new ExtractorMediaSource(uri,
new DefaultDataSourceFactory(context,"ua"),
new DefaultExtractorsFactory(),null,null);
}
DefaultDataSourceFactory
自动检测流式传输或本地存储文件,其中DefaultHttpDataSourceFactory
仅适用于流请求。
更新:随着新版本的推出(2.9.0)。某些类也被弃用了媒体资源。我正在使用新版媒体源,几乎播放所有类型的文件(MP3,MP4,AVI等)
private MediaSource buildMediaSourceNew(Uri uri,int buildType){
DataSource.Factory datasourceFactroy = new DefaultDataSourceFactory(context, Util.getUserAgent(context,"Your App Name"));
return new ExtractorMediaSource.Factory(datasourceFactroy).createMediaSource(uri);
}