swift代码如下:
import UIKit
import AVFoundation
class QRCodeViewController: BaseViewController, AVCaptureMetadataOutputObjectsDelegate {
//用于处理采集信息的代理
private var titleLabel = UILabel()
private var captureSession: AVCaptureSession? //输入输出的中间桥梁
private var videoPreviewLayer: AVCaptureVideoPreviewLayer?
private var animationLineView = UIImageView()
private var timer: NSTimer?
override func viewDidLoad() {
super.viewDidLoad()
buildNavigationItem()
buildInputAVCaptureDevice()
buildFrameImageView()
buildTitleLabel()
buildAnimationLineView()
}
override func viewWillDisappear(animated: Bool) {
super.viewWillDisappear(animated)
if timer != nil {
timer!.invalidate()
timer = nil
}
}
// MARK: - Build UI
private func buildNavigationItem() {
navigationItem.title = "店铺二维码"
navigationController?.navigationBar.barTintColor = LFBNavigationBarWhiteBackgroundColor
}
private func buildTitleLabel() {

本文介绍了如何使用Swift和Objective-C的原生API来实现二维码和条形码的扫描功能。通过创建AVCaptureSession,设置AVCaptureDeviceInput和AVCaptureMetadataOutput,以及处理扫描结果,实现扫描界面的搭建和扫描区域的高亮显示。
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