Swift4相机扫描二维码,复制粘贴拿走不谢???
//// QRCodeScanViewController.swift// TaoLiveShow//// Created by BraveShine on 2017/5/11.// Copyright © 2017年 BraveShine. All rights reserved.//import UIKitimport AVFoundation/// 屏幕宽度let kScreenWidth = UIScreen.main.bounds.size.width/// 屏幕高度let kScreenHeight = UIScreen.main.bounds.size.height/// 导航条高度let kNavigationHeight = UIApplication.shared.statusBarFrame.height/// 中间扫描框的高度private let kBoxW : CGFloat = kScreenWidth * 0.5/// 中间扫描框的中间点的Yprivate let kBoxCentY : CGFloat = kScreenHeight * 0.4//中间扫描框的四个顶点private let leftTopPoint = CGPoint.init(x: (kScreenWidth - kBoxW)/2, y: (kBoxCentY - (kBoxW/2)))private let rightTopPoint = CGPoint.init(x: (kScreenWidth + kBoxW)/2, y: (kBoxCentY - (kBoxW/2)))private let rightBottomPoint = CGPoint.init(x: (kScreenWidth + kBoxW)/2, y: (kBoxCentY + (kBoxW/2)))private let leftBottomPoint = CGPoint.init(x: (kScreenWidth - kBoxW)/2, y: (kBoxCentY + (kBoxW/2)))class QRCodeScanViewController: UIViewController { /// 扫描会话 var session = AVCaptureSession() /// 预览图层 lazy var preview : AVCaptureVideoPreviewLayer = { let preview = AVCaptureVideoPreviewLayer.init(session: self.session) preview.videoGravity = AVLayerVideoGravity.resizeAspectFill preview.frame = CGRect.init(x: 0, y: kNavigationHeight, width: kScreenWidth, height:kScreenHeight - kNavigationHeight) preview.backgroundColor = UIColor.black.cgColor let bpath : UIBezierPath = UIBezierPath.init(rect: self.view.bounds) let shaplayer = CAShapeLayer() shaplayer.frame = preview.bounds let path = self.createBezierPath(points: [leftTopPoint,rightTopPoint,rightBottomPoint,leftBottomPoint]) bpath.append(path) shaplayer.path = bpath.cgPath shaplayer.fillColor = UIColor.black.withAlphaComponent(0.4).cgColor shaplayer.fillRule = kCAFillRuleEvenOdd let edgeWidth : CGFloat = 30 let edgeSize = CGSize.init(width: edgeWidth, height: edgeWidth) let edgeLineWidth : CGFloat = 2 let leftTopLayer = CAShapeLayer() leftTopLayer.frame = CGRect.init(origin: leftTopPoint, size: edgeSize) let leftTopPath = self.createBezierPath(points: [CGPoint.init(x: 0, y: 0),CGPoint.init(x: edgeWidth, y: 0),CGPoint.init(x: edgeWidth, y: edgeLineWidth),CGPoint.init(x: edgeLineWidth, y: edgeLineWidth),CGPoint.init(x: edgeLineWidth, y: edgeWidth),CGPoint.init(x: 0, y: edgeWidth)]) leftTopLayer.path = leftTopPath.cgPath leftTopLayer.fillColor = UIColor.green.cgColor let rightTopLayer = CAShapeLayer() rightTopLayer.frame = CGRect.init(origin: CGPoint.init(x: rightTopPoint.x - edgeWidth, y: rightTopPoint.y), size: edgeSize) let rightTopPath = self.createBezierPath(points: [CGPoint.init(x: edgeWidth, y: 0),CGPoint.init(x: 0, y: 0),CGPoint.init(x: 0, y: edgeLineWidth),CGPoint.init(x: edgeWidth - edgeLineWidth, y: edgeLineWidth),CGPoint.init(x: edgeWidth - edgeLineWidth, y: edgeWidth),CGPoint.init(x: edgeWidth, y: edgeWidth)]) rightTopLayer.path = rightTopPath.cgPath rightTopLayer.fillColor = UIColor.green.cgColor let rightBottomLayer = CAShapeLayer() rightBottomLayer.frame = CGRect.init(origin: CGPoint.init(x: rightBottomPoint.x - edgeWidth, y: rightBottomPoint.y - edgeWidth), size: edgeSize) let rightBottomPath = self.createBezierPath(points: [CGPoint.init(x: edgeWidth, y: edgeWidth),CGPoint.init(x: edgeWidth, y: 0),CGPoint.init(x: edgeWidth - edgeLineWidth, y: 0),CGPoint.init(x: edgeWidth - edgeLineWidth, y: edgeWidth - edgeLineWidth),CGPoint.init(x: 0, y: edgeWidth - edgeLineWidth),CGPoint.init(x: 0, y: edgeWidth)]) rightBottomLayer.path = rightBottomPath.cgPath rightBottomLayer.fillColor = UIColor.green.cgColor let leftBottomLayer = CAShapeLayer() leftBottomLayer.frame = CGRect.init(origin: CGPoint.init(x: leftBottomPoint.x, y: leftBottomPoint.y - edgeWidth), size: edgeSize) let leftBottomPath = self.createBezierPath(points: [CGPoint.init(x: 0, y: edgeWidth),CGPoint.init(x: edgeWidth, y: edgeWidth),CGPoint.init(x: edgeWidth, y: edgeWidth - edgeLineWidth),CGPoint.init(x: edgeLineWidth, y: edgeWidth - edgeLineWidth),CGPoint.init(x: edgeLineWidth, y: 0),CGPoint.init(x: 0, y: 0)]) leftBottomLayer.path = leftBottomPath.cgPath leftBottomLayer.fillColor = UIColor.green.cgColor preview.addSublayer(shaplayer) preview.addSublayer(leftTopLayer) preview.addSublayer(rightTopLayer) preview.addSublayer(rightBottomLayer) preview.addSublayer(leftBottomLayer) return preview }() lazy var animalLine : UIImageView = { let line = UIImageView.init(image: UIImage.init(named: "qrcode_scan_animal")) self.view.addSubview(line) return line }() var isAnimal : Bool? lazy var prompt : UILabel = { let prompt = UILabel.init(frame: CGRect.init(x: leftBottomPoint.x, y: leftBottomPoint.y + kNavigationHeight + 10, width: kBoxW, height: 60)) prompt.text = "将二维码放入扫描框即可自动扫描" prompt.textAlignment = .center prompt.font = UIFont.systemFont(ofSize: 15) prompt.textColor = UIColor.white prompt.numberOfLines = 0 prompt.sizeToFit() return prompt }() var timer : Timer? override func viewDidDisappear(_ animated: Bool) { super.viewDidDisappear(animated) stopRunning() } override func viewWillAppear(_ animated: Bool) { super.viewWillAppear(animated) startRunning() } override func viewDidLoad() { super.viewDidLoad() navigationItem.title = "扫描二维码" /// 获取设备 let devices = AVCaptureDevice.devices(for: .video) let d = devices.filter({ return $0.position == .back }).first /// 视频输入 let videoInput = try? AVCaptureDeviceInput(device: d!) let queue = DispatchQueue.global(qos: .default) let videoOutput = AVCaptureMetadataOutput() videoOutput.setMetadataObjectsDelegate(self, queue: queue) if session.canAddInput(videoInput!) { session.addInput(videoInput!) } if session.canAddOutput(videoOutput) { session.addOutput(videoOutput) } ///扫描类型 videoOutput.metadataObjectTypes = [ .qr, .code39, .code128, .code39Mod43, .ean13, .ean8, .code93] ///可识别区域 注意看这个rectOfInterest 不是一左上角为原点，以右上角为原点 并且rect的值是个比例在【0，1】之间 videoOutput.rectOfInterest = CGRect.init(x: (kBoxCentY - (kBoxW/2) + kNavigationHeight/2)/kScreenHeight, y: 1 - (kScreenWidth + kBoxW)/2/kScreenWidth, width: kBoxW/kScreenHeight, height: kBoxW/kScreenWidth) view.layer.addSublayer(preview) self.view.addSubview(prompt) } func createBezierPath( points : [CGPoint]) -> UIBezierPath { var points = points let path = UIBezierPath() path.move(to: points.first!) points.remove(at: 0) for point in points { path.addLine(to: point) } path.close() return path } /// 开始扫描 func startRunning() { session.startRunning() setupTimer() } @objc func animalStart() { view.bringSubview(toFront: self.animalLine) animalLine.frame = CGRect.init(x: leftTopPoint.x, y: leftTopPoint.y + kNavigationHeight , width: kBoxW, height: 1) UIView.animate(withDuration: 3, animations: { let frame = self.animalLine.frame let newY : CGFloat = leftTopPoint.y + kNavigationHeight + kBoxW - frame.size.height let newFrame = CGRect.init(x: frame.origin.x, y: newY, width: frame.size.width, height: frame.size.height) self.animalLine.frame = newFrame }) { (finish) in } } /// 结束扫描 func stopRunning() { session.stopRunning() timer?.invalidate() } func setupTimer() { self.animalStart() self.timer = Timer.init(timeInterval: 3, target: self, selector: #selector(animalStart), userInfo: nil, repeats: true) RunLoop.main.add(self.timer!, forMode: RunLoopMode.commonModes) } deinit { print("dealloc") }}extension QRCodeScanViewController : AVCaptureMetadataOutputObjectsDelegate{ func metadataOutput(_ output: AVCaptureMetadataOutput, didOutput metadataObjects: [AVMetadataObject], from connection: AVCaptureConnection) { //扫描结果 print(output) if metadataObjects.count > 0 { let obj : AVMetadataMachineReadableCodeObject = metadataObjects.first as! AVMetadataMachineReadableCodeObject let str : String = obj.stringValue! print(str) stopRunning() } } }复制代码