備注：使用第三方庫[swiftScan]
(https://github.com/MxABC/swiftScan/blob/master/README-Chinese.md)

1. 步驟

(1)使用cocoapods安裝swiftScan第三方庫

pod 'swiftScan'    #二維碼掃描

說明：使用cocoapods安裝第三方庫請(qǐng)參考Cocoapods管理IOS依賴庫

(2)編譯后引入swiftScan

import swiftScan

(3)遵從LBXScanViewController協(xié)議

遵從LBXScanViewController協(xié)議.png

override func handleCodeResult(arrayResult: [LBXScanResult]) {
        if let result = arrayResult.first {
            let msg = result.strScanned
            print("掃描結(jié)果:" + msg!)

        }
    }

(5)自定義掃描動(dòng)畫

//掃描動(dòng)畫：在github下載項(xiàng)目，復(fù)制CodeScan.bundle獲取圖片
var style = LBXScanViewStyle()
style.anmiationStyle = .NetGrid
style.animationImage = UIImage(named: "CodeScan.bundle/qrcode_scan_part_net")
  scanStyle = style

2. 具體實(shí)現(xiàn)

(1)界面設(shè)計(jì)

界面設(shè)計(jì).png

(2)掃一掃對(duì)應(yīng)的視圖控制器ScanViewController.swift

//
//  ScanViewController.swift
//  JackUChat
//
//  Created by 徐云 on 2019/2/25.
//  Copyright ? 2019 Liy. All rights reserved.
//

import UIKit
import swiftScan

class ScanViewController: LBXScanViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
        
       //自定義視圖導(dǎo)航標(biāo)題
        self.title = "二維碼/條碼"
        navigationController?.navigationBar.barStyle = .blackTranslucent
        navigationController?.navigationBar.tintColor = UIColor.white
        
        //掃描動(dòng)畫：在github下載項(xiàng)目，復(fù)制CodeScan.bundle獲取圖片
        var style = LBXScanViewStyle()
        style.anmiationStyle = .NetGrid
        style.animationImage = UIImage(named: "CodeScan.bundle/qrcode_scan_part_net")//引用bundle中的圖片
        scanStyle = style
        
    }
    
    override func handleCodeResult(arrayResult: [LBXScanResult]) {
        if let result = arrayResult.first {
            let msg = result.strScanned
            print("掃描結(jié)果:" + msg!)

        }
    }

    /*
    // MARK: - Navigation

    // In a storyboard-based application, you will often want to do a little preparation before navigation
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        // Get the new view controller using segue.destination.
        // Pass the selected object to the new view controller.
    }
    */

}

3. 效果展示

二維碼掃描界面.png

4. 返回上級(jí)界面時(shí)速度慢

(1)分析：組件作者可能是按O-C的思路來寫的swiftScan庫的，swift時(shí)代不需要銷毀(反初始化)的處理。

控制臺(tái)信息.png

(2)解決方案：修改LBXScanViewController源碼，注釋viewWillDisappear()函數(shù)中的代碼

解決方案.png