问视频播放几秒钟Android DJI SDK错误
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Stack Overflow用户

提问于 2016-06-28 17:52:43

回答 0查看 205关注 0票数 0

我不知道为什么会出现这个错误：

E/UsbAccessoryService: recvBufferThread.start
E/UsbAccessoryService: RecvOsdRunnable true
E/UsbAccessoryService: rate 0.52 KB
E/UsbAccessoryService: parseVideoThread.start
E/DJIPackManager: pack senderType=14 cmdSet=9
E/UsbAccessoryService: ParseVideoRunnable true
E/DJIBaseProduct: Camera needCreateNew: true
E/DJIBaseProduct: put component
E/DJIBaseProduct: Gimbal needCreateNew: true
E/DJIBaseProduct: put component
E/DJIBaseProduct: FlightController needCreateNew: true
E/DJIBaseProduct: put component
E/DJIBaseProduct: update battery platformType: P4
E/DJIBaseProduct: update battery phantom
E/DJIBaseProduct: Battery needCreateNew: true
E/Event: Could not dispatch event: class dji.midware.data.model.P3.DataEyeGetPushFrontAvoidance to subscribing class class dji.sdk.FlightController.DJIIntelligentFlightAssistant$InnerEventBus
                                                              java.lang.NullPointerException: Attempt to invoke interface method 'int java.util.List.size()' on a null object reference
                                                                  at dji.sdk.FlightController.DJIIntelligentFlightAssistant$InnerEventBus.onEventBackgroundThread(Unknown Source)
                                                                  at java.lang.reflect.Method.invoke(Native Method)
                                                                  at java.lang.reflect.Method.invoke(Method.java:372)
                                                                  at dji.thirdparty.eventbus.EventBus.invokeSubscriber(EventBus.java:569)
                                                                  at dji.thirdparty.eventbus.EventBus.postToSubscription(EventBus.java:513)
                                                                  at dji.thirdparty.eventbus.EventBus.postSingleEvent(EventBus.java:475)
                                                                  at dji.thirdparty.eventbus.EventBus.post(EventBus.java:365)
                                                                  at dji.midware.data.manager.P3.t.post(Unknown Source)
                                                                  at dji.midware.data.manager.P3.t.setPushRecData(Unknown Source)
                                                                  at dji.midware.data.manager.P3.t.setPushRecPack(Unknown Source)
                                                                  at dji.midware.data.manager.P3.l.b(Unknown Source)
                                                                  at dji.midware.data.manager.P3.l.a(Unknown Source)
                                                                  at dji.midware.data.manager.P3.l.a(Unknown Source)
                                                                  at dji.midware.usb.P3.UsbAccessoryService$1.onGetBody(Unknown Source)
                                                                  at dji.midware.f.a.f.b(Unknown Source)
                                                                  at dji.midware.f.a.f.a(Unknown Source)
                                                                  at dji.midware.usb.P3.UsbAccessoryService$RecvBufferRunnable.run(Unknown Source)
                                                                  at java.lang.Thread.run(Thread.java:818)

来自TextureView的视频提要显示几秒钟，然后涉及显示视频提要的活动退出到MainActivity。(我使用MainActivity通过菜单转换到VideoFeedActivity )。我不知道空指针是什么，也不知道它是从哪里来的，因为我相信我正确地初始化了所有东西，但事实似乎并非如此。在实现的函数onSurfaceTextureUpdated(SurfaceTexture纹理)的SurfaceTextureListener中，我正在对每一帧的位图进行分析。然而，我怀疑这就是问题所在，我相信这与无人机对象的初始化以及它们之间的交互方式有关。我试图在加载视频流之前关闭IntelligentFlightAssistant；但是，这没有任何影响。

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