BUG in QCameraViewfinder

[RenanHm]

Hello .. I'm trying to display the image from the Android cell phone camera and later capture a photo.

My problem is in displaying the camera image in QCameraViewfinder. Simply the camera image does not appear. See below:

I'm using a very basic code just to test this problem. See my code:

int main( int argc, char ** argv ) {

    QApplication a( argc, argv );

    QWidget *wid = new QWidget;
    QCamera *cam = new QCamera();
    QCameraViewfinder *vf = new QCameraViewfinder(wid);
    cam->setViewfinder(vf);
    vf->showMaximized();
    wid->showMaximized();
    cam->start();

    return a.exec();
}

Detail that I can take the picture and save it in QImage. It just doesn't display the camera image at runtime.

I also noticed that a QT example does not display the camera image.

I use QT 5.14.2

QT bug or am I doing something wrong?

[jsulm]

@RenanHm said in BUG in QCameraViewfinder:

I use QT 5.14.2

You should try with a more recent Qt version. Android is a fast moving target and older Qt versions may fail on recent Android versions.

[RenanHm]

@jsulm So... changing the QT version whenever a BUG appears is complicated. Is there not a fix for this version 5.14.2?

[jsulm]

@RenanHm If there is really a bug in Qt 5.14.2 which was fixed then it will be in a later version (> 5.14.2). As I said: Android is changing quite fast.