Android app crashes on call startPreview method (NullPointerException)

[IgorSamer]

I just faced in my Crashlytics dashboard a report of a fatal error in an Android 10 device with the following log:

Fatal Exception: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.hardware.Camera.startPreview()' on a null object reference at com.ahm.capacitor.camera.preview.CameraActivity$4.onPictureTaken(CameraActivity.java:485) at android.hardware.Camera$EventHandler.handleMessage(Camera.java:1412) at android.os.Handler.dispatchMessage(Handler.java:107) at android.os.Looper.loop(Looper.java:214) at android.os.HandlerThread.run(HandlerThread.java:67)

Looking in the CameraActivity.java I found at the end of onPictureTaken method:

} finally {
  canTakePicture = true;
  mCamera.startPreview(); // here is the line 485 that thrown the error
}

How can I fix this? Do I have to add only a verification before like if (mCamera != null) mCamera.startPreview() or it needs to be done in another way?

[pbowyer]

Hi @IgorSamer sorry to hear you've had a fatal error. Did you find out what you needed to do to fix the problem?

[jcesarmobile]

closing since there was no response