SwiftQRTools

扫描 QR 码、生成 QR 码图像和从图像中读取 QR 码

用法

1. 扫描 QR 码

SwiftQRTools 提供了一个 SwiftQRScanController 和一个默认视图 SwiftQRScanView，如上图所示。您可以自己使用视图，只需继承 SwiftQRScanView 即可。在 SwiftQRScanControllerDelegate 中还有一些有用的委托方法。以下是一个示例

class ViewController: UIViewController {
    // ...
    @IBAction func scanQR(_ sender: Any?) {
        let scanVC = SwiftQRScanController()
        scanVC.delegate = self
        self.present(scanVC, animated: true, completion: nil)
    }
    // ...
}

extension ViewController: SwiftQRScanControllerDelegate {
    
    func scanController(_ controller: SwiftQRScanController, didFinishScanWithInfo info: String) {
        print(info)
        controller.dismiss(animated: false, completion: nil)
    }
    
    func scanMetadataObjectTypes(_ for: SwiftQRScanController) -> [AVMetadataObject.ObjectType] {
        return [.qr, .code128, .ean13, .ean8]
    }
    
    // SwiftQRScanViewConfig used to configure the interest rect.
   func scanViewConfigure(_ for: SwiftQRScanController) -> SwiftQRScanViewConfig {
        
        return SwiftQRScanViewConfig(colorExceptInterestRect: UIColor.init(white: 0, alpha: 0.8),
                                    interstRectWidth: 300.0,
                                    interstRectHeight: 100.0,
                                    interestRectCornerColor: UIColor.red,
                                    InterestRectCornerLineLength: 40,
                                    InterestRectCornerLineWidth: 10)
    }
    
    func scanView(_ for: SwiftQRScanController, in superView: UIView) -> SwiftQRScanView {
    
        let scanView = ScanViewWithBack(frame: superView.bounds)
        scanView.delegate = self
        return scanView
    }
}

2. 生成 QR 码

let image = SwiftQRUtils.generateQRCode(with: "123", tintColor: UIColor.black, imageScale: 10, centerImage: UIImage(named: "top"), centerImageSize: CGSize(width: 40, height: 40)) 

或直接

let image = SwiftQRUtils.generateQRCode(with: "123") 

2. 从图像中读取 QR 码信息

let image = UIImage(named: "test")
let result = SwiftQRUtils.getQRCodeInfo(in: image)
print("info is : \(result)")

SimpleQR 可通过 CocoaPods 使用。要安装它，只需将以下行添加到您的 Podfile 中：

pod 'SwiftQRTools'