IPhone camera loses autofocus when using ZBarSDK

Question

I am working on an application that the user can choose if he wants to scan a barcode or do something. In order to take a picture, I use UIImagePickerController, as usual. To scan the barcode, I use ZbarSDK 1.2 ZBarReaderViewController.

When shooting, everything works fine. When scanning a barcode: If you run the application and scan the barcode before by taking a picture, it also works great.

But you take a picture, and then go back and try to scan the barcode, the camera loses autofocus, and it is simply impossible to scan the barcode.

To summarize:
Start → Scan → Autofocus Start → Take a photo → Back → Scan → Auto focus does not work

Here's how I initialize the barcode scanner:

-(ZBarReaderViewController *) barcodeScanner
{
    if (nil == _barcodeScanner)
    {
        _barcodeScanner = [ZBarReaderViewController new];
        _barcodeScanner.readerDelegate = self;
        _barcodeScanner.cameraMode = ZBarReaderControllerCameraModeSampling;
        _barcodeScanner.sourceType = UIImagePickerControllerSourceTypeCamera;
    }
    return _barcodeScanner;
}

Any ideas?

Answer 1

Before loading the ZBarReaderViewController, make sure that you release the UIImagePickerController, and before loading the UIImagePickerController, make sure that you release the ZBarReaderViewController.

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Answer 2

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Answer 3

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