无法通过最新版本的Android中的exoplayer流音频文件

问题描述

我正在使用exoplayer将音频文件从Firebase存储流式传输到我的应用程序。我之前使用过Media player，速度太慢了。因此我改为exoplayer，当时的版本是2.8.4。

这是我用来流音频的代码：

SimpleExoPlayer simpleExoPlayer;
private void SetupPlayer(){
    DefaultRenderersFactory renderersFactory = new DefaultRenderersFactory(this,null,DefaultRenderersFactory.EXTENSION_RENDERER_MODE_OFF);
    TrackSelector trackSelector = new DefaultTrackSelector();
    LoadControl loadControl = new DefaultLoadControl.Builder()
            .setAllocator(new DefaultAllocator(true,16))
            .setBufferDurationsMs(MIN_BUFFER_DURATION,MAX_BUFFER_DURATION,MIN_PLAYBACK_START_BUFFER,MIN_PLAYBACK_RESUME_BUFFER)
            .setTargetBufferBytes(-1)
            .setPrioritizeTimeOverSizeThresholds(true).createDefaultLoadControl();
    simpleExoPlayer = ExoPlayerFactory.newSimpleInstance(renderersFactory,trackSelector,loadControl);
    String userAgent = Util.getUserAgent(this,"Play Audio");
    ExtractorMediaSource mediaSource = new ExtractorMediaSource(Uri.parse(audio_url),new DefaultDataSourceFactory(this,userAgent),new DefaultExtractorsFactory(),null);

    simpleExoPlayer.prepare(mediaSource);
}

效果很好。但是现在exoplayer已将其版本更新为2.11.8。在此版本中，不推荐使用ExtractorMediaSource，DefaultRenderersFactory，DefaultTrackSelector，ExoPlayerFactory。

所以我更改了最新版本的代码。

这是代码：

    SimpleExoPlayer simpleExoPlayer;
    private void SetupPlayer(){
       // Create a data source factory.
        DataSource.Factory dataSourceFactory =
                new DefaultHttpDataSourceFactory(Util.getUserAgent(this,"app-name"));
// Create a progressive media source pointing to a stream uri.
        MediaSource mediaSource = new ProgressiveMediaSource.Factory(dataSourceFactory)
                .createMediaSource(Uri.parse(audio_url));
// Create a player instance.
        simpleExoPlayer =  new SimpleExoPlayer.Builder(this).build();
// Prepare the player with the media source.
        simpleExoPlayer.prepare(mediaSource);
    }

现在显示错误

java.lang.NoSuchMethodError: No static method metafactory(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite; in class Ljava/lang/invoke/LambdaMetafactory; or its super classes (declaration of 'java.lang.invoke.LambdaMetafactory' appears in /apex/com.android.runtime/javalib/core-oj.jar)
        at com.google.android.exoplayer2.util.SlidingPercentile.<clinit>(SlidingPercentile.java:38)
        at com.google.android.exoplayer2.upstream.DefaultBandwidthMeter.<init>(DefaultBandwidthMeter.java:276)
        at com.google.android.exoplayer2.upstream.DefaultBandwidthMeter.<init>(DefaultBandwidthMeter.java:48)
        at com.google.android.exoplayer2.upstream.DefaultBandwidthMeter$Builder.build(DefaultBandwidthMeter.java:190)
        at com.google.android.exoplayer2.upstream.DefaultBandwidthMeter.getSingletonInstance(DefaultBandwidthMeter.java:229)
        at com.google.android.exoplayer2.SimpleExoPlayer$Builder.<init>(SimpleExoPlayer.java:144)
        at com.google.android.exoplayer2.SimpleExoPlayer$Builder.<init>(SimpleExoPlayer.java:126)
        at com.paulstevenme.jeevaoli.StoryAudioActivity.SetupPlayer(StoryAudioActivity.java:323)
        at com.paulstevenme.jeevaoli.StoryAudioActivity.onCreate(StoryAudioActivity.java:125)
        at android.app.Activity.performCreate(Activity.java:7955)
        at android.app.Activity.performCreate(Activity.java:7944)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1307)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3423)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3595)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2147)
        at android.os.Handler.dispatchMessage(Handler.java:107)
        at android.os.Looper.loop(Looper.java:237)
        at android.app.ActivityThread.main(ActivityThread.java:7814)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1068)

我搜索了Stack overflow。但是每个人的答案都是过时的。所以我不知道如何解决它。请帮我一些解决方案。

解决方法

找到答案。我只是错过了在添加后some-page-example.com/path/to/image/image_name.jpg?AWSAccessKeyId=access_key&Signature=signature&Expires=some_numbers 中添加compile options的效果。

build gradle.