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'scanHexInt32'はiOS 13.0で廃止されました

IOS 13（Swift 5以降）のscanHexInt32の代替は何ですか？

extension UIColor {


    //--------------------------------------------
    class func hexColor(hex:String) -> UIColor {
        var cString:String = hex.trimmingCharacters(in: CharacterSet.whitespacesAndNewlines).uppercased()

        if (cString.hasPrefix("#")) {
            cString = String(cString[cString.index(cString.startIndex, offsetBy: 1)...])
        }

        if (cString.count != 6) {
            return UIColor.gray
        }

        var rgbValue:UInt32 = 0

// warning in this line - 'scanHexInt32' was deprecated in iOS 13.0
        Scanner(string: cString).scanHexInt32(&rgbValue)

        return UIColor(
            red: CGFloat((rgbValue & 0xFF0000) >> 16) / 255.0,
            green: CGFloat((rgbValue & 0x00FF00) >> 8) / 255.0,
            blue: CGFloat(rgbValue & 0x0000FF) / 255.0,
            alpha: CGFloat(1.0)
        )
    }
}

参照：スナップショット

enter image description here

swifthexios13uicolor
16
Krunal

UInt64およびscanHexInt64を使用するように更新：

convenience init(hex: String, alpha: CGFloat = 1.0) {
    var hexFormatted: String = hex.trimmingCharacters(in: CharacterSet.whitespacesAndNewlines).uppercased()

    if hexFormatted.hasPrefix("#") {
        hexFormatted = String(hexFormatted.dropFirst())
    }

    assert(hexFormatted.count == 6, "Invalid hex code used.")

    var rgbValue: UInt64 = 0
    Scanner(string: hexFormatted).scanHexInt64(&rgbValue)

    self.init(red: CGFloat((rgbValue & 0xFF0000) >> 16) / 255.0,
              green: CGFloat((rgbValue & 0x00FF00) >> 8) / 255.0,
              blue: CGFloat(rgbValue & 0x0000FF) / 255.0,
              alpha: alpha)
}
16
Daniel Storm

Appleは64ビットOSからInt32を段階的に廃止しています。代わりにInt64を使用するようにコードを変換してください。

@available(iOS, introduced: 2.0, deprecated: 13.0)
open func scanHexInt32(_ result: UnsafeMutablePointer<UInt32>?) -> Bool // Optionally prefixed with "0x" or "0X"


@available(iOS 2.0, *)
open func scanHexInt64(_ result: UnsafeMutablePointer<UInt64>?) -> Bool // Optionally prefixed with "0x" or "0X"
7
John Zhou

利用可能な別のインスタンスメソッドがあります

scanInt32(representation:)

宣言：

func scanInt32(representation: Scanner.NumberRepresentation = .decimal) -> Int32?

ここでは、列挙型 。hexadecimal を渡す必要があります。

同じ結果が返されることを願っています。結果はオプションになります。

4
Ashish Kakkad

スウィフト5

extension String {

var color: UIColor {
    let hex = trimmingCharacters(in: CharacterSet.alphanumerics.inverted)

    if #available(iOS 13, *) {
        guard let int = Scanner(string: hex).scanInt32(representation: .hexadecimal) else { return #colorLiteral(red: 1.0, green: 1.0, blue: 1.0, alpha: 1.0) }

        let a, r, g, b: Int32
        switch hex.count {
        case 3:     (a, r, g, b) = (255, (int >> 8) * 17, (int >> 4 & 0xF) * 17, (int & 0xF) * 17)  // RGB (12-bit)
        case 6:     (a, r, g, b) = (255, int >> 16, int >> 8 & 0xFF, int & 0xFF)                    // RGB (24-bit)
        case 8:     (a, r, g, b) = (int >> 24, int >> 16 & 0xFF, int >> 8 & 0xFF, int & 0xFF)       // ARGB (32-bit)
        default:    (a, r, g, b) = (255, 0, 0, 0)
        }

        return UIColor(red: CGFloat(r) / 255.0, green: CGFloat(g) / 255.0, blue: CGFloat(b) / 255.0, alpha: CGFloat(a) / 255.0)

    } else {
        var int = UInt32()

        Scanner(string: hex).scanHexInt32(&int)
        let a, r, g, b: UInt32
        switch hex.count {
        case 3:     (a, r, g, b) = (255, (int >> 8) * 17, (int >> 4 & 0xF) * 17, (int & 0xF) * 17)  // RGB (12-bit)
        case 6:     (a, r, g, b) = (255, int >> 16, int >> 8 & 0xFF, int & 0xFF)                    // RGB (24-bit)
        case 8:     (a, r, g, b) = (int >> 24, int >> 16 & 0xFF, int >> 8 & 0xFF, int & 0xFF)       // ARGB (32-bit)
        default:    (a, r, g, b) = (255, 0, 0, 0)
        }

        return UIColor(red: CGFloat(r) / 255.0, green: CGFloat(g) / 255.0, blue: CGFloat(b) / 255.0, alpha: CGFloat(a) / 255.0)
    }
  }
}
0
Den