http://download.csdn.net/detail/koocui/9857846

類擴充套件

import UIKit

extensionUIViewController{

func showAlert(title:String,message:String,handler:@escaping((UIAlertAction)->Void)){

let alert:UIAlertController =UIAlertController(title: title, message: message, preferredStyle: .alert)

let action:

UIAlertAction =UIAlertAction(title: "確定", style: .default, handler: handler)

        alert.addAction(action)

self.present(alert, animated:true, completion: nil)

    }

}

一，二維碼掃描；

1，掃描頁面上面的View

//

//  MaskView.swift

//  二維碼

//

//  Created by CJW on 17/5/26.

//  Copyright © 2017年 cjw. All rights reserved.

//

import UIKit

class MaskView: UIView {

var lineLayer:CALayer? =nil

// Only override draw() if you perform custom drawing.

// An empty implementation adversely affects performance during animation.

overridefunc draw(_ rect:CGRect) {

let width:CGFloat = rect.size.width

let height:CGFloat = rect.

size.height

let pickingFieldWIdth:CGFloat =300

let pickingFieldHeight:CGFloat =300

let contextRef =UIGraphicsGetCurrentContext()

        contextRef!.saveGState()

//蒙版

        contextRef?.setFillColor(red:0, green: 0, blue:0, alpha: 0.35)

        contextRef?.setLineWidth(3)

let pickingFIeldRect =CGRect(x: (width - pickingFieldWIdth) /2, y: (height - pickingFieldHeight) /2, width: pickingFieldWIdth, height: pickingFieldHeight)

let pickingFieldPath =UIBezierPath(rect: pickingFIeldRect)

let bezierPathRect =UIBezierPath(rect: rect)

//填充使用奇偶法則

        bezierPathRect.usesEvenOddFillRule =true

        bezierPathRect.fill()

        contextRef?.setLineWidth(2)

//框框

        contextRef?.setStrokeColor(red:27/255.0, green:181/255.0, blue:254/255.0, alpha:1)

        pickingFieldPath.stroke()

        contextRef?.restoreGState()

self.layer.contentsGravity =kCAGravityCenter

    }

overridefunc awakeFromNib() {

super.awakeFromNib()

self.backgroundColor =UIColor.black.withAlphaComponent(0.4)

self.lineLayer =CALayer(layer: layer)

self.lineLayer?.contents =UIImage(named: "line")?.cgImage

self.layer.addSublayer(self.lineLayer!)

self.resumeAnimation()

NotificationCenter.default.addObserver(self, selector: #selector(resumeAnimation), name:NSNotification.Name.UIApplicationDidBecomeActive, object: nil)

NotificationCenter.default.addObserver(self, selector: #selector(stopAnimation), name:NSNotification.Name.UIApplicationDidEnterBackground, object: nil)

    }

overridefunc layoutSubviews() {

super.layoutSubviews()

self.setNeedsDisplay()

self.lineLayer?.frame =CGRect(x: (self.frame.size.width - 300) / 2, y: (self.frame.size.height - 300) / 2, width:300, height: 2)

    }

func stopAnimation(){

self.lineLayer?.removeAnimation(forKey:"translationY")

    }

func resumeAnimation(){

let basic =CABasicAnimation(keyPath:"transform.translation.y")

        basic.fromValue = (0)

        basic.toValue = (300)

        basic.duration =1.5

        basic.repeatCount =Float(NSIntegerMax)

self.lineLayer?.add(basic, forKey:"translationY")

    }

}

2，掃描二維碼的VC

//

//  ScanViewController.swift

//  二維碼

//

//  Created by CJW on 17/5/26.

//  Copyright © 2017年 cjw. All rights reserved.

//  掃描二維碼

import UIKit

import AVFoundation

class ScanViewController:UIViewController,AVCaptureMetadataOutputObjectsDelegate {

var flashOpen:Bool? =nil

privatelazyvar session:AVCaptureSession = {

//獲取攝像裝置

let device:AVCaptureDevice =AVCaptureDevice.defaultDevice(withMediaType:AVMediaTypeVideo)

//建立輸入流

var input:AVCaptureDeviceInput?

do {

let myinput:AVCaptureDeviceInput=tryAVCaptureDeviceInput(device: device)

            input = myinput

        }catchlet error asNSError{

print(error)

        }

//建立輸出流

let output:AVCaptureMetadataOutput =AVCaptureMetadataOutput()

        output.setMetadataObjectsDelegate(self, queue:DispatchQueue.main)

//設定掃描區域的比例

let width =300 / self.view.bounds.height

let height =300 / self.view.bounds.width

        output.rectOfInterest =CGRect(x: (1-width)/2, y: (1-height) / 2, width: width, height: height)

let session1 =AVCaptureSession()

//高質量採集率

        session1.canSetSessionPreset(AVCaptureSessionPresetHigh)

        session1.addInput(input)

        session1.addOutput(output)

//設定掃碼支援的編碼格式(這裡設定條形碼和二維碼相容)

        output.metadataObjectTypes = [AVMetadataObjectTypeQRCode,AVMetadataObjectTypeEAN13Code,AVMetadataObjectTypeEAN8Code,AVMetadataObjectTypeCode128Code]

return session1

    }()

overridefunc viewDidLoad() {

super.viewDidLoad()

self.navigationItem.rightBarButtonItem =UIBarButtonItem(title: "開啟閃光燈", style: .plain, target:self, action: #selector(rightBarButtonDidClick))

let layer:AVCaptureVideoPreviewLayer =AVCaptureVideoPreviewLayer(session:session)

        layer.videoGravity =AVLayerVideoGravityResizeAspectFill

        layer.frame =self.view.layer.bounds

self.view.layer.insertSublayer(layer, at: 0)

    }

overridefunc viewWillAppear(_ animated:Bool) {

super.viewWillAppear(animated)

self.session.startRunning()

    }

overridefunc viewWillDisappear(_ animated:Bool) {

super.viewWillDisappear(animated)

self.session.stopRunning()

    }

overridefunc didReceiveMemoryWarning() {

super.didReceiveMemoryWarning()

// Dispose of any resources that can be recreated.

    }

//MARK: - AVCaptureMetadataOutputObjectsDelegate

func captureOutput(_ captureOutput:AVCaptureOutput!, didOutputMetadataObjects metadataObjects: [Any]!, from connection:AVCaptureConnection!) {

if metadataObjects.count >0 {

self.session.stopRunning()

let metadataObject:AVMetadataMachineReadableCodeObject = metadataObjects.firstas! AVMetadataMachineReadableCodeObject

self.showAlert(title:"掃面結果", message: metadataObject.stringValue, handler: { (ht) in

self.session.startRunning()

            })

        }

    }

}

//開啟閃光燈

extensionScanViewController {

func rightBarButtonDidClick(btn:UIBarButtonItem){

self.flashOpen =!self.flashOpen!

let device:AVCaptureDevice =AVCaptureDevice.defaultDevice(withMediaType:AVMediaTypeAudio)

if device.hasTorch&& device.hasFlash {

ifself.flashOpen! {

self.navigationItem.rightBarButtonItem =UIBarButtonItem(title: "關閉閃光燈", style: .plain, target:self, action: #selector(rightBarButtonDidClick))

            }

            device.torchMode =AVCaptureTorchMode.on

            device.flashMode =AVCaptureFlashMode.on

        }else {

self.navigationItem.rightBarButtonItem =UIBarButtonItem(title: "開啟閃光燈", style: .plain, target:self, action: #selector(rightBarButtonDidClick))

            device.torchMode =AVCaptureTorchMode.off

              device.flashMode =AVCaptureFlashMode.off

        }

    }

}

二，識別圖片二維碼；

//

//  ImageViewController.swift

//  二維碼

//

//  Created by CJW on 17/5/26.

//  Copyright © 2017年 cjw. All rights reserved.

//  長按識別二維碼

import UIKit

class ImageViewController:UIViewController,UINavigationControllerDelegate,UIImagePickerControllerDelegate{

@IBOutletweakvar imageView:UIImageView!

overridefunc viewDidLoad() {

super.viewDidLoad()

self.navigationItem.rightBarButtonItem =UIBarButtonItem(title: "從相簿獲取", style:UIBarButtonItemStyle.plain, target:self, action: #selector(rightBarBtnItemClick(item:)))

    }

overridefunc didReceiveMemoryWarning() {

super.didReceiveMemoryWarning()

// Dispose of any resources that can be recreated.

    }

//MARK:- 從相簿選擇

func rightBarBtnItemClick(item:UIBarButtonItem){

ifUIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.photoLibrary) {

let controller =UIImagePickerController()

            controller.sourceType =UIImagePickerControllerSourceType.photoLibrary

            controller.delegate =self

self.present(controller, animated:true, completion: { 

            })

        }else {

self.showAlert(title:"提示", message:"裝置不支援訪問相簿", handler: { (text)in

            })

        }

    }

//MARK:- UIImagePickerControllerDeleGate

func imagePickerController(_ picker:UIImagePickerController, didFinishPickingMediaWithInfo info: [String :Any]) {

        picker.dismiss(animated:true) { 

let image = info[UIImagePickerControllerOriginalImage]

self.imageView.image = imageas! UIImage?

        }

    }

//MARK:- 長按識別二維碼

@IBActionfunc handleLongPress(_ sender:UILongPressGestureRecognizer) {

if sender.state ==UIGestureRecognizerState.began {

self.findQRCodeFromImage(image:self.imageView.image!)

        }

    }

//

func  findQRCodeFromImage(image:UIImage){

let detector:CIDetector =CIDetector(ofType:CIDetectorTypeQRCode, context:nil, options: [CIDetectorAccuracy:CIDetectorAccuracyHigh])!

let faetures = detector.features(in:CIImage(cgImage: image.cgImage!))

if faetures.count >=1 {

let feature:CIQRCodeFeature = faetures.firstas! CIQRCodeFeature

self.showAlert(title:"掃描結果", message: feature.messageString!, handler: { (alert) in

            })

        }else {

self.showAlert(title:"提示", message:"圖片裡沒有二維碼", handler: { (alert)in

            })

        }

    }

}

三，識別圖片二維碼；

//

//  CreateViewController.swift

//  二維碼

//

//  Created by CJW on 17/5/26.

//  Copyright © 2017年 cjw. All rights reserved.

//  生成二維碼

import UIKit

import CoreFoundation

privatelet kRandomColor =UIColor.creatColor(r:CGFloat(arc4random_uniform(255)), g:CGFloat(arc4random_uniform(255)), b:CGFloat(arc4random_uniform(255)))

privatelet qrImageSize =CGSize(width: 300, height:300)

class CreateViewController:UIViewController,UITextFieldDelegate {

@IBOutletweakvar textFiled:UITextField!

@IBOutletweakvar imageView:UIImageView!

overridefunc viewDidLoad() {

super.viewDidLoad()

self.imageView.image = self.createQRImageWithString("小崔哥", andSize: qrImageSize)

    }

func textFieldShouldReturn(_ textField:UITextField) -> Bool {

self.createButtonDidClick(UIButton())

returntrue

    }

//MARK:- methods

@IBActionfunc createButtonDidClick(_ sender:UIButton) {

self.textFiled.resignFirstResponder()

if (self.textFiled.text?.characters.count)! > 0 {

self.imageView.image =self.createQRImageWithString(self.textFiled.text!, andSize: qrImageSize)

        }else {

self.showAlert(title:"提示", message:"請先輸入文字", handler: { (alter)in

            })

        }

    }

//為二維碼改變顏色

@IBActionfunc changeColorButtonDidClick(_ sender:UIButton) {

let image =self.createQRImageWithString(self.textFiled.text!, andSize: qrImageSize)

self.imageView.image =self.changeColorForQRImage(iamge: image, backColor:kRandomColor, frontColor:kRandomColor)

    }

@IBActionfunc addSamllImageButtonDidClick(_ sender:UIButton) {

self.imageView.image =self.

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