Error opening camera on android emulator

[E-Kaese]

Code:

AdvCamera(
    onCameraCreated: _onCameraCreated,
    onImageCaptured: _onImageCaptured,
)

void _onCameraCreated(AdvCameraController controller) {
    setState(() {
      _cameraController = controller;
    });
}

void _onImageCaptured(String path) {
    print(path);
}

Error: W/System.err(12618): java.lang.NullPointerException: Attempt to invoke interface method 'boolean java.util.List.contains(java.lang.Object)' on a null object reference W/System.err(12618): at com.ric.adv_camera.AdvCamera.translateFlashType(AdvCamera.java:503) W/System.err(12618): at com.ric.adv_camera.AdvCamera.refreshCamera(AdvCamera.java:582) W/System.err(12618): at com.ric.adv_camera.AdvCamera.surfaceChanged(AdvCamera.java:516) W/System.err(12618): at android.view.SurfaceView.updateSurface(SurfaceView.java:770) W/System.err(12618): at android.view.SurfaceView$2.onPreDraw(SurfaceView.java:155) W/System.err(12618): at android.view.ViewTreeObserver.dispatchOnPreDraw(ViewTreeObserver.java:1088) W/System.err(12618): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2745) W/System.err(12618): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1721)

[E-Kaese]

I presume it has to do with the emulator not having a flash. Upon further inspection, it throws the same error for using the front camera on a device.

[ricnaaru]

hmm did you use the latest version? i though i have fixed this

[E-Kaese]

Version I'm using: 1.1.1+1

[E-Kaese]

Any updates on this?

[ricnaaru]

since this is just on emulator and not really urgent, i may test this in quite some time in the future, will update later

[benneca]

this also seems to happen on any device that does not have a flash at least the 2 android tablets that I have tried. I have had the same results on a samsung tab a (SM-T510) and a galaxy tab s2 (SM-T713). I get a black screen when I load the camera. Adding a null check on the supportedFocusMode gets me to a frozen camerapreview but then I get the error listed above. I can modify the translateFlashType function to check if the supported modes are null but I then run into a set parameter failed issue. Would love to see a fix for this as this is on real devices and therefore a pretty high priority.

update: I fixed this issue with the following change to the translateFlashType function

if(supportedModes != null) {
            if (!supportedModes.contains(result)) {
                if (supportedModes.size() > 0) {
                    result = supportedModes.get(0);
                } else {
                    result = "";
                }
            }
        }
        else
        {
            result = "off";
        }

[ricnaaru]

thanks @benneca will add it to the code!