Getting NullPointerException with setDefaultBufferSize() in onStartBind()

[SweetD3v]

The bug

• CameraView version: 2.7.2
• Camera engine used: camera2
• Reproducible in official demo app: No. because it's crashlytics log & I haven't found anything to reproduce it yet.
• Device / Android version: 10, 11, 12 & some older devices
• I have read the FAQ page: Yes

XML layout

Part of the XML layout with the CameraView declaration, so we can read its attributes.

<com.otaliastudios.cameraview.CameraView
            android:id="@+id/camera_view"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerVertical="true"
            android:layout_gravity="center"
            android:keepScreenOn="true"
            app:cameraAudio="on"
            app:cameraAutoFocusMarker="@string/cameraview_default_autofocus_marker"
            app:cameraEngine="camera2"
            app:cameraExperimental="true"
            app:cameraFacing="back"
            app:cameraFlash="off"
            app:cameraGestureLongTap="none"
            app:cameraGesturePinch="zoom"
            app:cameraGestureScrollHorizontal="none"
            app:cameraGestureScrollVertical="exposureCorrection"
            app:cameraGrid="off"
            app:cameraHdr="on"
            app:cameraMode="picture"
            app:cameraPictureMetering="false"
            app:cameraPlaySounds="false"
            app:cameraPreview="glSurface"
            app:cameraPreviewFrameRate="30"
            app:cameraPreviewFrameRateExact="false"
            app:cameraRequestPermissions="true">
</com.otaliastudios.cameraview.CameraView>

Logs

Fatal Exception: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.graphics.SurfaceTexture.setDefaultBufferSize(int, int)' on a null object reference
       at com.otaliastudios.cameraview.engine.Camera2Engine.onStartBind(Camera2Engine.java:506)
       at com.otaliastudios.cameraview.engine.CameraEngine$8.call(CameraEngine.java:471)
       at com.otaliastudios.cameraview.engine.CameraEngine$8.call(CameraEngine.java:467)
       at com.otaliastudios.cameraview.engine.orchestrator.CameraStateOrchestrator$2.call(CameraStateOrchestrator.java:69)
       at com.otaliastudios.cameraview.engine.orchestrator.CameraStateOrchestrator$2.call(CameraStateOrchestrator.java:60)
       at com.otaliastudios.cameraview.engine.orchestrator.CameraOrchestrator$3.run(CameraOrchestrator.java:152)
       at com.otaliastudios.cameraview.internal.WorkerHandler.run(WorkerHandler.java:137)
       at com.otaliastudios.cameraview.engine.orchestrator.CameraOrchestrator.execute(CameraOrchestrator.java:147)
       at com.otaliastudios.cameraview.engine.orchestrator.CameraOrchestrator.access$100(CameraOrchestrator.java:34)
       at com.otaliastudios.cameraview.engine.orchestrator.CameraOrchestrator$2.run(CameraOrchestrator.java:137)
       at android.os.Handler.handleCallback(Handler.java:938)
       at android.os.Handler.dispatchMessage(Handler.java:99)
       at android.os.Looper.loopOnce(Looper.java:226)
       at android.os.Looper.loop(Looper.java:313)
       at android.os.HandlerThread.run(HandlerThread.java:67)

It's also mentioned in issues - #1130, #1057, #923

[yalamo]

Any one has idea for this issus?

[savan15]

I have also face same issue and it is reported on firebase and google play console.

Any help will be appreciated.

[PearKMA]

I found out in some cases onResume() calls open() but in onPause(), it does not close camera because camera is not actually open, then when onResume() is called again it causes this error. I tried calling open in onStart() and close it in onStop() and it worked fine, not sure if it is completely correct. In my case, the error occurred when asking for other permission and navigating to the app settings and returning immediately after.