PDF417 Mobile SDK

import MicroBlink

class ViewController: UIViewController, MBBarcodeOverlayViewControllerDelegate {
    
    var barcodeRecognizer : MBBarcodeRecognizer?
    
    override func viewDidLoad() {
        super.viewDidLoad()
        MBMicroblinkSDK.sharedInstance().setLicenseResource("<name>", withExtension: "<extension>", inSubdirectory: "<subdirectory>", for: <bundle>)
    }
    
    @IBAction func didTapScan(_ sender: AnyObject) {
        
        /** Create barcode recognizer */
        // various 1D and 2D barcode types are supported,
        // see https://bit.ly/2pFDYpQ for options
        self.barcodeRecognizer = MBBarcodeRecognizer()
        
        // only PDF417 2D barcode will be activated
        self.barcodeRecognizer?.scanPdf417 = true
                
        /** Create barcode settings */
        let settings : MBBarcodeOverlaySettings = MBBarcodeOverlaySettings()
        
        /** Crate recognizer collection */
        let recognizerList : Array = [self.barcodeRecognizer!] as! [MBRecognizer]
        let recognizerCollection : MBRecognizerCollection = MBRecognizerCollection(recognizers: recognizerList)
        
        /** Add recognizer collection to barcode settings */
        settings.uiSettings.recognizerCollection = recognizerCollection
        
        /** Create your overlay view controller */
        let barcodeOverlayViewController : MBBarcodeOverlayViewController = MBBarcodeOverlayViewController(settings: settings, andDelegate: self)
        
        /** Create recognizer view controller with wanted overlay view controller */
        let recognizerRunneViewController : UIViewController = MBViewControllerFactory.recognizerRunnerViewController(withOverlayViewController: barcodeOverlayViewController)
        
        /** Present the recognizer runner view controller. You can use other presentation methods as well (instead of presentViewController) */
        self.present(recognizerRunneViewController, animated: true, completion: nil)
    }
    
    
    // MARK: MBBarcodeOverlayViewControllerDelegate
    
    func barcodeOverlayViewControllerDidFinishScanning(_ barcodeOverlayViewController: MBBarcodeOverlayViewController, state: MBRecognizerResultState) {
        
        let recognizerRunnerViewController = overlayViewController.recognizerRunnerViewController as MBRecognizerRunnerViewController
        
        if (self.barcodeRecognizer!.result.resultState == MBRecognizerResultState.valid) {
          /** This is done on background thread */
          recognizerRunnerViewController.pauseScanning()
          
          /** Needs to be called on main thread because everything prior is on background thread */
          DispatchQueue.main.async {
            // result is valid, you can use it however you wish
              
          }
        }
    }
    
    func barcodeOverlayViewControllerDidTapClose(_ barcodeOverlayViewController: MBBarcodeOverlayViewController) {
        self.overlayViewControllerDidTapClose(barcodeOverlayViewController)
        
        self.dismiss(animated: true, completion: nil)
    }
}

/**
 * Set your license file. The recommended way is extending the Android Application class
 * and setting the license file in its onCreate callback.
 * Register on our dashboard to get the license key for your app.
 */
public class MyApplication extends Application {
    @Override
    public void onCreate() {
        MicroblinkSDK.setLicenseFile("path/to/license/file/within/assets/dir", this);
    }
}

public class MyActivity extends Activity {
    private BarcodeRecognizer mBarcodeRecognizer;
    private RecognizerBundle mRecognizerBundle;
    
    @Override
    protected void onCreate(Bundle bundle) {
        super.onCreate(bundle);
        
        // setup views, as you would normally do in onCreate callback
        
        // create BarcodeRecognizer
        // various 1D and 2D barcode types are supported,
        // see https://bit.ly/2Gf5f8M for options
        mBarcodeRecognizer = new BarcodeRecognizer();
      
        // only PDF417 2D barcode will be activated
        mBarcodeRecognizer.setScanPDF417(true);
        
        // bundle recognizers into RecognizerBundle
        mRecognizerBundle = new RecognizerBundle(mBarcodeRecognizer);
    }
  
    public void startScanning() {
        // Settings for BarcodeScanActivity Activity
        BarcodeUISettings settings = new BarcodeUISettings(mRecognizerBundle);
    
        // tweak settings as you wish
    
        // Start activity
        ActivityRunner.startActivityForResult(this, MY_REQUEST_CODE, settings);
    }
  
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        if (requestCode == MY_REQUEST_CODE) {
            if (resultCode == BarcodeScanActivity.RESULT_OK && data != null) {
                // load the data into all recognizers bundled within your RecognizerBundle
                mRecognizerBundle.loadFromIntent(data);

                // now every recognizer object that was bundled within RecognizerBundle
                // has been updated with results obtained during the scanning session

                // you can get the result by invoking getResult on recognizer
                BarcodeRecognizer.Result result = mBarcodeRecognizer.getResult();
                if (result.getResultState() == Recognizer.Result.State.Valid) {
                    // result is valid, you can use it however you wish
                }
            }
        }
    }

}