Did not run the func scanningViewController(_ scanningViewController: PPScanningViewController, didOutputMetadata metadata: PPMetadata)

[leeyikkong]

Hi, may I know why after scanning the id card, it wont run this method? i want to get the image from the scanning process.

Thank you

[DoDoENT]

Have you subscribed to receiving of metadata in the settings? In order to receive images, you must first define which metadata should be sent to the callback func.

[leeyikkong]

    if (PPCameraCoordinator.isScanningUnsupported(for: PPCameraType.back, error: error)) {
        return nil;
    }

    /** 1. Initialize the Scanning settings */

    // Initialize the scanner settings object. This initialize settings with all default values.
    let settings: PPSettings = PPSettings()

    /** 2. Setup the license key */

    // Visit www.microblink.com to get the license key for your app
    settings.licenseSettings.licenseKey = AppConstant.BlinkIdLicenseKey

    /**
     * 3. Set up what is being scanned. See detailed guides for specific use cases.
     * Remove undesired recognizers (added below) for optimal performance.
     */

    do { // Remove this if you're not using MRTD recognition

        // To specify we want to perform MRTD (machine readable travel document) recognition, initialize the MRTD recognizer settings
        let mrtdRecognizerSettings = PPMrtdRecognizerSettings()

        /** You can modify the properties of mrtdRecognizerSettings to suit your use-case */

        // tell the library to get full image of the document. Setting this to YES makes sense just if
        // settings.metadataSettings.dewarpedImage = YES, otherwise it wastes CPU time.
        mrtdRecognizerSettings.dewarpFullDocument = false;
        settings.metadataSettings.successfulFrame = true
        // Add MRTD Recognizer setting to a list of used recognizer settings
        settings.scanSettings.add(mrtdRecognizerSettings)
    }

this is my code, is there any problem? THank you

[culoi]

Hello leeyikkong, As mentioned above, you must first define which metadata should be sent to the callback func. We tested your code and added next:
func scanningViewController(_ scanningViewController: UIViewController?, didOutputMetadata metadata: PPMetadata) { let alertController: UIAlertController = UIAlertController.init(title: "Metadata", message: "Metadata OK", preferredStyle: UIAlertControllerStyle.alert) let okAction: UIAlertAction = UIAlertAction.init(title: "OK", style: UIAlertActionStyle.default, handler: { (action) -> Void in self.dismiss(animated: true, completion: nil)

As we checked, there should be no problem.

If you have any additional questions, please let us know.

[leeyikkong]

ok thanks.