Black screen when re opening app

[ralphgabrielle]

I just copied all the codes from the sample project that is included here.

@Override
protected void onResume() {
super.onResume();
qReader.initAndStart(surfaceView);
}`

@Override
protected void onPause() {
super.onPause();
qReader.releaseAndCleanup();
}`

I think there's something wrong about the SurfaceView, currently tested on Kitkat and Marshmallow both have the same error.

-Thanks

[rbuiten]

the problem looks like https://stackoverflow.com/questions/11495842/how-surfaceholder-callbacks-are-related-to-activity-lifecycle.

I did resolve this issue by using a FrameLayout instead of SurfaceView. In my onResume i reload the data (remove all views of FrameLayout and add the SurfaceView to the FrameLayout)

binding.frameSurface.removeAllViews();
surfaceView = new SurfaceView(getContext());
binding.frameSurface.addView(surfaceView)

There must be a better solution, but it works for now.

[alexxgarci]

I check if the camera is running, and if it's false, i started again. @ralphgabrielle

@Override
    protected void onResume() {
        super.onResume();

        // Init and Start with SurfaceView
        // -------------------------------
        qrEader.initAndStart(mySurfaceView);
        if (!qrEader.isCameraRunning()) {
            qrEader.start();
        }
    }

[ralphgabrielle]

sure I'll try that, I did a little hack, but yours is a lot cleaner. Thanks @alexxgarci

[datnt1987]

Hi guys, I have the same issue and still not solved it, any suggestion ? I try the solution of @alexxgarci but it not work.

[ralphgabrielle]

Hi, try to manually add the surface view on the code, and remove on on pause (or whenever) and add it back. I'll try to create a gist code later and share it here.

…

On Thu, Sep 28, 2017 at 5:07 PM, datnt1987 ***@***.***> wrote: Hi guys, I have the same issue and still not solved it, any suggestion ? I try the solution of @alexxgarci <https://github.com/alexxgarci> but it not work. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#41 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AG9e9FOCMWqg8mdRb8E2YFQRi_FaiySDks5sm2HVgaJpZM4N8FY2> .

[datnt1987]

Dear @ralphgabrielle , It worked, thanks so much

[ralphgabrielle]

Glad it helped you. Cheers

…

On Fri, Sep 29, 2017 at 1:57 PM, datnt1987 ***@***.***> wrote: Dear @ralphgabrielle <https://github.com/ralphgabrielle> , It worked, thanks so much — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#41 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AG9e9JhWPSIauEUW7CdoCiU4wohYcFRVks5snIa_gaJpZM4N8FY2> .

[akashp1992]

this code working for me

@OverRide
protected void onPause() {
super.onPause();
qrEader.initAndStart(surfaceView);
if(qrEader.isCameraRunning()){
qrEader.stop();
}
}

@Override
protected void onResume() {
    super.onResume();
    qrEader.initAndStart(surfaceView);
    if (!qrEader.isCameraRunning()) {
        qrEader.start();
    }
}