首先 导入AVFoundation框架 @IBOutlet weak var iconView: UIImageView! override func viewDidLoad() { super.viewDidLoad() createQRCode() } private func createQRCode() { // 建立一个滤镜 let qrFilter = CIFilter(name: "CIQRCodeGenerator") // 重设滤镜的初始值 qrFilter.setDefaults() // 通过KVC设置滤镜的内容 qrFilter.s...
1// 生成二维码 2 final class QRGenerator {3static func generate(from string: String) -> UIImage? {4 let context = CIContext()5// let data = string.data(using: String.Encoding.ascii) 6 let data = string.data(using: String.Encoding.utf8)7 8if let filter = CIFilter(name: "CIQRCodeGenerator") {9 filter.setValue(data, forKey: "inputMessage") 10 let transfo...