录像报错：java.lang.NullPointerException Null surface

[po1xiao]

Current use version？

当前使用的版本是多少？

v3.10.7

Will this problem occur in demo?

Demo能否复现这问题？

否，线上小概率问题

Describe the problem or provide an error log？

描述问题或提供错误log？

java.lang.NullPointerException
Null surface
 
androidx.camera.core.impl.AutoValue_SessionConfig_OutputConfig$Builder.setSurface(AutoValue_SessionConfig_OutputConfig.java:103)
androidx.camera.core.impl.SessionConfig$OutputConfig.builder(SessionConfig.java:116)
androidx.camera.core.impl.SessionConfig$Builder.addNonRepeatingSurface(SessionConfig.java:559)
androidx.camera.core.VideoCapture.stopRecording(VideoCapture.java:535)
com.luck.lib.camerax.CustomCameraView$3.recordShort(CustomCameraView.java:372)
com.luck.lib.camerax.widget.CaptureLayout$2.recordShort(CaptureLayout.java:157)
com.luck.lib.camerax.widget.CaptureButton.recordEnd(CaptureButton.java:267)
com.luck.lib.camerax.widget.CaptureButton.handlerPressByState(CaptureButton.java:257)
com.luck.lib.camerax.widget.CaptureButton.onTouchEvent(CaptureButton.java:227)

[po1xiao]

还有一种情况，是生命周期中报错，可能是因为代码中给VideoCapture绑定了生命周期操作：

 Camera camera = mCameraProvider.bindToLifecycle((LifecycleOwner) getContext(), cameraSelector, preview, mVideoCapture);

这样生命周期中也会调用VideoCapture.stopRecording，代码中也会主动调用VideoCapture.stopRecording，这两种情况就会有竞争，如果代码中先调用，生命周期中的调用就会抛异常，反之亦然。因为recordShort中没有加try-catch，所有有这两处报错。

堆栈如下：
java.lang.RuntimeException:Unable to stop activity {xx/com.luck.lib.camerax.PictureCameraActivity}: java.lang.RuntimeException: Failed to call observer method
android.app.ActivityThread.callActivityOnStop(ActivityThread.java:6347)
......
Caused by:
java.lang.NullPointerException:Null surface
androidx.camera.core.impl.AutoValue_SessionConfig_OutputConfig$Builder.setSurface(AutoValue_SessionConfig_OutputConfig.java:103)
androidx.camera.core.impl.SessionConfig$OutputConfig.builder(SessionConfig.java:116)
androidx.camera.core.impl.SessionConfig$Builder.addNonRepeatingSurface(SessionConfig.java:559)
androidx.camera.core.VideoCapture.stopRecording(VideoCapture.java:535)
androidx.camera.core.VideoCapture.onStateDetached(VideoCapture.java:613)
androidx.camera.camera2.internal.Camera2CameraImpl.notifyStateDetachedToUseCases(Camera2CameraImpl.java:813)
androidx.camera.camera2.internal.Camera2CameraImpl.detachUseCases(Camera2CameraImpl.java:832)
androidx.camera.core.internal.CameraUseCaseAdapter.detachUseCases(CameraUseCaseAdapter.java:347)
androidx.camera.lifecycle.LifecycleCamera.onStop(LifecycleCamera.java:97)
androidx.camera.lifecycle.LifecycleCamera.suspend(LifecycleCamera.java:140)
androidx.camera.lifecycle.LifecycleCameraRepository.suspendUseCases(LifecycleCameraRepository.java:444)
androidx.camera.lifecycle.LifecycleCameraRepository.setInactive(LifecycleCameraRepository.java:389)
androidx.camera.lifecycle.LifecycleCameraRepository$LifecycleCameraRepositoryObserver.onStop(LifecycleCameraRepository.java:515)
java.lang.reflect.Method.invoke(Native Method)
androidx.lifecycle.ClassesInfoCache$MethodReference.invokeCallback(ClassesInfoCache.java:225)
androidx.lifecycle.ClassesInfoCache$CallbackInfo.invokeMethodsForEvent(ClassesInfoCache.java:199)
androidx.lifecycle.ClassesInfoCache$CallbackInfo.invokeCallbacks(ClassesInfoCache.java:190)
androidx.lifecycle.ReflectiveGenericLifecycleObserver.onStateChanged(ReflectiveGenericLifecycleObserver.java:40)
androidx.lifecycle.LifecycleRegistry$ObserverWithState.dispatchEvent(LifecycleRegistry.java:360)
androidx.lifecycle.LifecycleRegistry.backwardPass(LifecycleRegistry.java:290)
androidx.lifecycle.LifecycleRegistry.sync(LifecycleRegistry.java:308)
androidx.lifecycle.LifecycleRegistry.moveToState(LifecycleRegistry.java:151)
androidx.lifecycle.LifecycleRegistry.handleLifecycleEvent(LifecycleRegistry.java:134)
androidx.lifecycle.ReportFragment.dispatch(ReportFragment.java:68)
androidx.lifecycle.ReportFragment$LifecycleCallbacks.onActivityPreStopped(ReportFragment.java:210)
android.app.Activity.dispatchActivityPreStopped(Activity.java:1514)
android.app.Activity.performStop(Activity.java:8720)