swift - 找不到 swift 类型的初始值设定项

Question

struct PhoneP {
    var name = "Un-Name"
    var pphone = "Un-Phone"
    let NumOfDay = ""
    let date :NSDate = NSDate()
}

class PhoneManager: NSObject {

    var phones = [PhoneP]()

    func addPhone(name: String, phone: String, Nday: String){
        phones.append(PhoneP(name: name, pphone: phone, NumDay: Nday ,date: NSData()))
        //phones.append(Phone(name: name, pphone: phone, NumOfDay: Nday, date: NSDate()))
}

error: swift:28:23: Cannot find an initializer for type 'Phone' that accepts an argument list of type '(name: String, pphone: String, NumOfDay: String, date: NSDate)'

为什么会出现此错误？

Answer 1

numOfDay 和 date 是您已经设置的常量。之后您将无法更改它们。只需使用:

PhoneP(name: "name", pphone: "phone")

或者将您的结构更改为:

struct PhoneP {
    var name = "Un-Name"
    var pphone = "Un-Phone"
    let NumOfDay: String
    let date: NSDate
}

然后您可以像这样创建结构:

PhoneP(name: "name", pphone: "phone", NumOfDay: "day", date: NSDate())

此外，您要将 NSData() 添加到 NSDate 的类型中，因此它也不会编译。

phones.append(PhoneP(name: name, pphone: phone, NumDay: Nday ,date: NSData()))