接收到视频呼叫,进入视频通话界面黑屏

java.lang.NullPointerException: Attempt to invoke virtual method ‘com.abbc.agora.model.MyEngineEventHandler com.abbc.agora.model.WorkerThread.eventHandler()’ on a null object reference
at com.abbc.agora.BaseActivity.event(BaseActivity.java:146)
at com.abbc.agora.SWCallActivity.initUIandEvent(SWCallActivity.java:62)
at com.abbc.agora.BaseActivity$1.onGlobalLayout(BaseActivity.java:48)
at android.view.ViewTreeObserver.dispatchOnGlobalLayout(ViewTreeObserver.java:815)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1914)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1080)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5877)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:767)
at android.view.Choreographer.doCallbacks(Choreographer.java:580)
at android.view.Choreographer.doFrame(Choreographer.java:550)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5475)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:948)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:743)

是怎么集成的? RTM+视频的话,试过demo吗?