您可以使用 Swift Package Manager 来安装 DECardNumberFormatter，方法是将以下依赖项添加到您的 Package.swift 文件中
.package(url: "https://github.com/Darkngs/DECardNumberFormatter.git", from: "2.0.0"),
或者，您可以直接将 DECardNumberFormatter.swift 和 DECardNumberTextField.swift 源文件添加到您的项目中。
let cardNumberFormatter = DECardNumberFormatter()
// AmEx
print(cardNumberFormatter.number(from: "34 12 123456 12345"))
print(cardNumberFormatter.number(from: "37 12 123456 12345"))
// Diners Club
var cardNumber = "300 1 123456 1234"
print(cardNumberFormatter.number(from: cardNumber))
if cardNumberFormatter.isValidLuhnCardNumber(cardNumber) {
print("Card number: \(cardNumber) - is valid!")
}
// UATP
cardNumber = "1 234 12345 123456 1234"
print(cardNumberFormatter.number(from: cardNumber))
if cardNumberFormatter.isValidLuhnCardNumber(cardNumber) {
print("Card number: \(cardNumber) - is valid!")
}
// Visa
cardNumber = "4111111111111111"
print(cardNumberFormatter.number(from: cardNumber))
if cardNumberFormatter.isValidLuhnCardNumber(cardNumber) {
print("Card number: \(cardNumber) - is valid!")
}
3412 123456 12345
3712 123456 12345
3001 123456 1234
1234 12345 123456 1234
4111 1111 1111 1111
Card number: 4111111111111111 - is valid!
let textField = DECardNumberTextField()
textField.setup()