Android 致命异常：MediaBrowser中的java.lang.IllegalStateException

我的音频流应用程序在Crashlytics中存在此问题，下面是stacktrace

Fatal Exception: java.lang.IllegalStateException: getExtras() called while not connected (state=CONNECT_STATE_CONNECTING)
   at android.media.browse.MediaBrowser.getExtras(MediaBrowser.java:296)
   at android.support.v4.media.MediaBrowserCompatApi21.getExtras(SourceFile:65)
   at android.support.v4.media.MediaBrowserCompat$MediaBrowserImplApi21.onConnected(SourceFile:1852)
   at android.support.v4.media.MediaBrowserCompat$ConnectionCallback$StubApi21.onConnected(SourceFile:649)
   at android.support.v4.media.MediaBrowserCompatApi21$ConnectionCallbackProxy.onConnected(SourceFile:102)
   at android.media.browse.MediaBrowser$5.run(MediaBrowser.java:577)
   at android.os.Handler.handleCallback(Handler.java:751)
   at android.os.Handler.dispatchMessage(Handler.java:95)
   at android.os.Looper.loop(Looper.java:154)
   at android.app.ActivityThread.main(ActivityThread.java:6316)
   at java.lang.reflect.Method.invoke(Method.java)
   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:872)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:762)

在我的代码中，我确实启动了MediaBrowser

mMediaBrowserCompat = new MediaBrowserCompat(this, new ComponentName(this, BackgroundAudioService.class),
            mMediaBrowserCompatConnectionCallback, input);

我还提供了一个连接回调

private MediaBrowserCompat.ConnectionCallback mMediaBrowserCompatConnectionCallback = new MediaBrowserCompat.ConnectionCallback() {

    @Override
    public void onConnected() {
        super.onConnected();
        try {

            mMediaControllerCompat = new MediaControllerCompat(Player2Activity.this, mMediaBrowserCompat.getSessionToken());
            mMediaControllerCompat.registerCallback(mMediaControllerCompatCallback);
            MediaControllerCompat.setMediaController(Player2Activity.this,mMediaControllerCompat);

        } catch (RemoteException e) {

        }
    }



    public void onConnectionSuspended() {
        Log.v(TAG, "mMediaBrowserCompatConnection onConnectionSuspended");
        mMediaBrowserCompat = null;
    }

};

这个问题让我很困惑，因为我没有看到我的回调函数在stacktrace中被调用。此外，我可以看到在stacktrace中已经调用了onConnected（）函数，但是，为什么它仍然抱怨状态仍然是CONNECT\u state\u CONNECTING呢。希望有人能帮我

---

提前感谢。

在启动和播放音频时，我多次单击按钮时发生了这种情况。MediaBrowserCompat对象被多次初始化，从而导致错误

初始化对象时，只需进行空检查：

if(mMediaBrowser == null)
                mMediaBrowser = new MediaBrowserCompat(context, new ComponentName(context, MusicService.class), mConnectionCallback, null);

希望能奏效