二维码---长按识别 swift

概述swift 3.0 Xcode 8.1 import UIKitclass ViewController: UIViewController { var imageView: UIImageView! override func viewDidLoad() { super.viewDidLoad() imageVie swift 3.0 Xcode 8.1

import UIKitclass VIEwController: UIVIEwController {        var imageVIEw: UIImageVIEw!    overrIDe func vIEwDIDLoad() {        super.vIEwDIDLoad()                imageVIEw = UIImageVIEw.init(frame: CGRect.init(x: 100,y: 100,wIDth: 200,height: 200))        imageVIEw.image = UIImage.init(named: "123.jpeg")        imageVIEw.isUserInteractionEnabled = true        self.vIEw.addSubvIEw(imageVIEw)                //长按识别二维码        let longPress = UILongPressGestureRecognizer.init(target: self,action: #selector(QRLongPress(gesture:)))        longPress.minimumPressDuration = 1        imageVIEw.addGestureRecognizer(longPress)            }    //MARK: - 长按二维码识别    func QRLongPress(gesture: UILongPressGestureRecognizer) {                if (gesture.state == UIGestureRecognizerState.began) {                        //1.初始化扫描仪，设置设别类型和识别质量            let options = ["IDetectorAccuracy" : CIDetectorAccuracyHigh]            let detector: CIDetector = CIDetector.init(ofType: "CIDetectorTypeQRCode",context: nil,options: options)!            //2.扫描获取的特征组            let features = detector.features(in: CIImage.init(cgImage: (self.imageVIEw.image?.cgImage)!))            //3.获取扫描结果            let feature = features[0] as! CiqrCodeFeature            let scannedResult = feature.messageString            //4.获取之后的 *** 作            print(scannedResult!)                    } else if (gesture.state == UIGestureRecognizerState.ended) {                    }    }    overrIDe func dIDReceiveMemoryWarning() {        super.dIDReceiveMemoryWarning()        // dispose of any resources that can be recreated.    }}

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