iOS Swift 生成二维码

来这里，了解很多问题，发掘更多。
👇👇👇 传送门->LLPhotoBrowser👇👇👇

⚠️⚠️⚠️：以下内容来自于传送门链接👆👆👆

func tapAction() {
    /// CIFilter
    let filter = CIFilter.init(name: "CIQRCodeGenerator")
    filter?.setDefaults()
    /// Add Data
    let data = "https://www.baidu.com".data(using: .utf8)
    filter?.setValue(data, forKeyPath: "inputMessage")
    /// Out Put
    let outputImage = filter?.outputImage
    /// Show QRCode
    self.imageView.image = createUIImageFromCIImage(image: outputImage!, size: 200)
 }

// 高清处理
func createUIImageFromCIImage(image: CIImage, size: CGFloat) -> UIImage {
    let extent = image.extent.integral
    let scale = min(size / extent.width, size / extent.height)
        
    /// Create bitmap
    let width: size_t = size_t(extent.width * scale)
    let height: size_t = size_t(extent.height * scale)
    let cs: CGColorSpace = CGColorSpaceCreateDeviceGray()
    let bitmap: CGContext = CGContext(data: nil, width: width, height: height, bitsPerComponent: 8, bytesPerRow: 0, space: cs, bitmapInfo: 1)!
        
    let context = CIContext.init()
    let bitmapImage = context.createCGImage(image, from: extent)
    bitmap.interpolationQuality = .none
    bitmap.scaleBy(x: scale, y: scale)
    bitmap.draw(bitmapImage!, in: extent)
        
    let scaledImage = bitmap.makeImage()
    return UIImage.init(cgImage: scaledImage!)
}

注意

以上内容为个人整理，如果有问题有出入或者你有更好的解决方法，还请赐教哦，感谢。
我的邮箱 coderjianfeng@foxmail.com 👉👉👉 github传送门