我正在尝试像这样在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)
用于初始化 exoplayer 的我的 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);
}
我尝试了 Uri.parse(path)
和上述文件方式,但它仍然给我 ClassCastException
。请指导我如何在exoplayer中播放本地存储文件。
最佳答案
我从谷歌官方 Exoplayer 存储库得到了答案
The DefaultDataSource supports both local and Http sources. It automatically detects which one to use.
所以我改变了
private MediaSource buildMediaSource(Uri uri){
return new ExtractorMediaSource(uri,
new DefaultHttpDataSourceFactory("ua"),
new DefaultExtractorsFactory(),null,null);
}
对此
private MediaSource buildMediaSource(Uri uri){
return new ExtractorMediaSource(uri,
new DefaultDataSourceFactory(context,"ua"),
new DefaultExtractorsFactory(),null,null);
}
DefaultDataSourceFactory
自动检测流媒体或本地存储文件,其中 DefaultHttpDataSourceFactory
仅适用于流媒体请求。
更新:随着新版本的推出 (2.9.0)。一些类也被弃用了媒体资源。我正在使用新版本的媒体源,它几乎可以播放所有类型的文件(MP3、MP4、AVI 等等)
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);
}
关于java - Exoplayer 不在本地存储上播放本地文件,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/47046321/