Question

我真的很陌生，我真的需要帮助。我一直遇到这个问题。类DetailViewController没有初始值设定项

import UIKit

 class DetailViewController: UIViewController {

@IBOutlet var namelabel : UILabel
@IBOutlet var phoneNumberLabel : UILabel
var contact : Contacts?



override func viewDidLoad() {
    super.viewDidLoad()
    if let contact = self.contact {
        if let name = contact.name {
            self.namelabel.text = name
        }
        if let phoneNumber = contact.phoneNumber {
            self.phoneNumberLabel.text = phoneNumber
        }
    }
    // Do any additional setup after loading the view.
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

Answer 1

这将解决您的问题

@IBOutlet var namelabel : UILabel!
@IBOutlet var phoneNumberLabel : UILabel!

您需要为变量指定一个值（在构造函数中或在定义时）或将其标记为可选。

类没有初始化器

1 个答案: