//
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// CommonScanQRCodeVC.swift
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// WanPai
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//
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// Created by 无故事王国 on 2023/9/11.
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//
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import UIKit
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import AVKit
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import JQTools
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import SceneKit
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class CommonScanQRCodeVC: BaseVC,AVCaptureMetadataOutputObjectsDelegate {
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//是否是第一次扫描到结果
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public var firstResult: Bool = true
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//AVCaptureSession对象来执行输入设备和输出设备之间的数据传递
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public var session: AVCaptureSession?
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//输入设备
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public var videoInput: AVCaptureDeviceInput?
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//输出对象
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public var metadataOutput: AVCaptureMetadataOutput = AVCaptureMetadataOutput()
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//预览图层
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public var previewLayer: AVCaptureVideoPreviewLayer?
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public var scanTimer: Timer?
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//边框
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public var borderView:UIImageView?
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//line
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public var scanLineView:UIImageView?
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//返回按钮
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public var closeBtn:UIButton?
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private let borderWidth:CGFloat = 400
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private let topMargin: CGFloat = 230
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private var clouse:((String,Bool)->Void)?
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/// 返回扫描结果，是否时第一次扫描到结果
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public convenience init(clouse:@escaping (String,Bool)->Void){
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self.init()
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self.clouse = clouse
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}
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public override func viewDidLoad() {
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super.viewDidLoad()
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title = "扫描二维码"
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if UIImagePickerController.isSourceTypeAvailable(.camera){
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if borderView == nil {
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borderView = UIImageView(image: UIImage(named: "ty_qrcode_bg"))
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}
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if scanLineView == nil {
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scanLineView = UIImageView(image: UIImage(named: "ty_qrcode_line"))
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}
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if closeBtn == nil && modalPresentationStyle == .fullScreen && self.presentationController != nil {
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closeBtn = UIButton(type: .custom)
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closeBtn!.addTarget(self, action: #selector(closeView), for: .touchUpInside)
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let image = Bundle.JQ_Bundle(icon: "close_btn")
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closeBtn!.setImage(image, for: .normal)
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view.addSubview(closeBtn!)
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closeBtn!.snp.makeConstraints { (make) in
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make.top.equalTo(30)
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make.left.equalTo(20)
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make.width.height.equalTo(30)
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}
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}
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let authStatus = AVCaptureDevice.authorizationStatus(for: AVMediaType.video)
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if authStatus == AVAuthorizationStatus.notDetermined {
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AVCaptureDevice.requestAccess(for: AVMediaType.video) { (granted) in
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if granted{
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self.limitSuccess()
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}else{
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self.limitFaild()
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}
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}
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} else if authStatus == AVAuthorizationStatus.restricted || authStatus == AVAuthorizationStatus.denied {
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limitFaild()
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} else {
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limitSuccess()
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}
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}else{
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alertError(msg: "当前环境相机不可用")
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DispatchQueue.main.asyncAfter(deadline: .now()+1) {
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self.navigationController?.popViewController()
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}
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}
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}
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private func limitSuccess(){
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setupCaptureSession()
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DispatchQueue.main.async {
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self.addSubviews()
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self.scanTimer = Timer.scheduledTimer(timeInterval: 3.0, target: self, selector: #selector(self.startAnimation), userInfo: nil, repeats: true)
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self.firstResult = true
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if let session = self.session {
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let queue = DispatchQueue(label: "startRun")
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queue.async {
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session.startRunning()
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}
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}
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self.scanTimer?.fireDate = NSDate.distantPast
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}
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}
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private func limitFaild(){
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DispatchQueue.main.async {
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let alertController = UIAlertController(title: nil,message: "请在iphone的“设置-隐私-相机”选项中，允许应用访问你的相机", preferredStyle: .alert)
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let cancelAction = UIAlertAction(title: "取消", style: .cancel, handler: { action in
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if self.qmui_isPresented(){
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self.dismiss(animated: true)
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}else{
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self.navigationController?.popViewController(animated: true)
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}
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})
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let okAction = UIAlertAction(title: "前往", style: .default, handler: {action in
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if self.qmui_isPresented(){
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self.dismiss(animated: true)
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}else{
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self.navigationController?.popViewController(animated: true)
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}
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let settingUrl = NSURL(string: UIApplication.openSettingsURLString)!
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if UIApplication.shared.canOpenURL(settingUrl as URL){
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if #available(iOS 10.0, *) {
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UIApplication.shared.open(settingUrl as URL, options: [:], completionHandler: nil)
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} else {
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UIApplication.shared.openURL(settingUrl as URL)
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}
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}
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})
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alertController.addAction(cancelAction)
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alertController.addAction(okAction)
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self.present(alertController, animated: true, completion: nil)
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}
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}
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func checkCameraAuth() -> Bool {
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let status = AVCaptureDevice.authorizationStatus(for: .video)
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return status == .authorized;
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}
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//MARK:生成背景遮盖
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func getCoverView(left: CGFloat, top: CGFloat) -> UIImage? {
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UIGraphicsBeginImageContext(CGSize(width: UIScreen.main.bounds.size.width, height: UIScreen.main.bounds.size.height - 64))
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let contextRef = UIGraphicsGetCurrentContext()
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contextRef?.setFillColor(UIColor (red: 111/255.0, green: 111/255.0, blue: 22/255.0, alpha: 0.5).cgColor)
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contextRef?.fill(CGRect(x: 0, y: 0, width: UIScreen.main.bounds.size.width, height: UIScreen.main.bounds.size.height))
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let inset:CGFloat = 4
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contextRef?.clear(CGRect(x: left + inset, y: top + inset, width: UIScreen.main.bounds.size.width - left * 2 - inset * 2, height: UIScreen.main.bounds.size.width - left * 2 - inset * 2))
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return UIGraphicsGetImageFromCurrentImageContext()
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}
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func addSubviews() {
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let _: CGFloat = (UIScreen.main.bounds.size.width - borderWidth) * 0.5
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//扫描边框
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borderView!.frame = CGRect.init(x: (UIScreen.main.bounds.size.width-(self.view.center.x+30))/2, y: (UIScreen.main.bounds.size.height-(self.view.center.x + 30))/2, width: self.view.center.x + 30, height: self.view.center.x + 30)
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view.addSubview(borderView!)
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//扫描的线
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scanLineView!.frame = CGRect(x:borderView!.frame.origin.x+2, y: borderView!.frame.origin.y+2, width: borderView!.bounds.size.width, height: 2)
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view.addSubview(scanLineView!)
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let tipLabel = UILabel();
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tipLabel.text = "对准二维码，即可自动扫描";
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tipLabel.textColor = UIColor.white;
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tipLabel.font = UIFont.systemFont(ofSize: 14)
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tipLabel.textAlignment = .center;
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tipLabel.frame = CGRect(x: 0, y:0, width:200, height: 40)
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tipLabel.center = CGPoint(x: borderView!.center.x , y: borderView!.center.y + (self.view.center.x + 30)/2 + 30);
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view.addSubview(tipLabel)
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}
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//MARK:- 开始扫描动画
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@objc func startAnimation() -> Void {
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//让约束从顶部开始
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var frame = self.scanLineView!.frame
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frame.origin.y = borderView!.frame.origin.y
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self.scanLineView!.frame = frame
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self.scanLineView!.layoutIfNeeded()
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UIView.animate(withDuration: 3.0, animations: {
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//改变frame
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frame.origin.y = self.borderView!.frame.origin.y+self.borderView!.bounds.size.height
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self.scanLineView!.frame = frame
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//强制更新界面
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self.scanLineView!.layoutIfNeeded()
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})
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}
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func stopAnimation() -> Void {
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//让约束从顶部开始
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var frame = self.scanLineView!.frame
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frame.origin.y = 64 + topMargin
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self.scanLineView!.frame = frame
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self.scanLineView!.layoutIfNeeded()
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scanTimer?.invalidate()
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scanTimer = nil
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}
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public override func viewWillDisappear(_ animated: Bool) {
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super.viewWillDisappear(animated)
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//关闭session
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if let session = self.session{
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session.stopRunning()
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}
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}
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@objc func closeView(){
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if (self.presentationController != nil) {
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self.dismiss(animated: true, completion: nil)
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}else{
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self.navigationController?.popViewController(animated: true)
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}
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}
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deinit {
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scanTimer?.invalidate()
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scanTimer = nil
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print("scan-----deinit")
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}
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//MARK:设置session
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func setupCaptureSession() {
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self.session = AVCaptureSession()
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//高质量采集率
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self.session?.sessionPreset = AVCaptureSession.Preset.high
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guard let device = AVCaptureDevice.default(for: AVMediaType.video) else { return }
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//更改这个设置的时候必须先锁定设备，修改完后再解锁，否则崩溃
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do{
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try device.lockForConfiguration()
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//设置闪光灯为自动
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device.flashMode = AVCaptureDevice.FlashMode.auto
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device.unlockForConfiguration()
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}catch{
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print("崩溃")
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}
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do{
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try self.videoInput = AVCaptureDeviceInput(device: device)
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}catch{
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print("崩溃")
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}
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//输入设备
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if let videoInput = self.videoInput {
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if self.session?.canAddInput(videoInput) == true {
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self.session?.addInput(videoInput)
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}
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}
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//添加输出
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if self.session?.canAddOutput(self.metadataOutput) == true{
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self.session?.addOutput(self.metadataOutput)
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}
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self.metadataOutput.metadataObjectTypes = [AVMetadataObject.ObjectType.qr,
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AVMetadataObject.ObjectType.ean13,
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AVMetadataObject.ObjectType.ean8,
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AVMetadataObject.ObjectType.code128,
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AVMetadataObject.ObjectType.code39,
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AVMetadataObject.ObjectType.code93]
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self.metadataOutput.setMetadataObjectsDelegate(self, queue: DispatchQueue.main)
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//预览图层
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if let session = self.session {
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self.previewLayer = AVCaptureVideoPreviewLayer(session: session)
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self.previewLayer?.videoGravity = AVLayerVideoGravity.resizeAspectFill
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self.previewLayer?.frame = CGRect(x: 0, y : 0, width: UIScreen.main.bounds.size.width, height: UIScreen.main.bounds.size.height)
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}
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if let layer = self.previewLayer {
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view.layer.insertSublayer(layer, at: 0)
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}
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}
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public func metadataOutput(_ output: AVCaptureMetadataOutput, didOutput metadataObjects: [AVMetadataObject], from connection: AVCaptureConnection) {
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self.session?.stopRunning();
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if (metadataObjects.count >= 1) {
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//数组中包含的都是AVMetadataMachineReadableCodeObject 类型的对象，该对象中包含解码后的数据
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let qrObject:AVMetadataMachineReadableCodeObject = metadataObjects.last as! AVMetadataMachineReadableCodeObject;
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//拿到扫描内容在这里进行个性化处理
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let result = qrObject.stringValue
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clouse?(result ?? "",firstResult)
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closeView()
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}
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}
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}
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