Question

我正在尝试显示数组的随机项目，我有此文件：

//VerseModel.swift

import Foundation

struct VerseModel { 
   var verse = ""
   var reference = ""
   var date = Date()

}

此文件：

//VersesMock.swift

import Foundation

struct VersesMock {
    var verses: Array<VerseModel> = [
        VerseModel(verse: "Teste 1", reference: "Mt 13:2", date: Date()),
        VerseModel(verse: "Teste 2", reference: "Mt 14:2", date: Date()),
        VerseModel(verse: "Teste 3", reference: "Mt 15:2", date: Date()),
        VerseModel(verse: "Teste 4", reference: "Mt 16:2", date: Date()),
        VerseModel(verse: "Teste 5", reference: "Mt 17:2", date: Date()),
        VerseModel(verse: "Teste 6", reference: "Mt 18:2", date: Date()),
        VerseModel(verse: "Teste 7", reference: "Mt 19:2", date: Date()),
        VerseModel(verse: "Teste 8", reference: "Mt 20:2", date: Date()),
        VerseModel(verse: "Teste 9", reference: "Mt 21:2", date: Date())
    ]
}

这是

import UIKit

final class HomeViewController: UIViewController {

@IBOutlet weak var nameLabel: UILabel!
@IBOutlet weak var verseLbl: UILabel!

var user = UserMock()
var verses = VersesMock().verses

override func viewDidLoad() {
    super.viewDidLoad()
    nameLabel.text = user.name
    verseLbl.text = verseModel
}

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
}

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

我正在尝试做这样的事情，但是它说

“无法将类型'[VerseModel]'的值分配为类型'字符串？'”

是的，我知道我不能分配它们，因为它们来自不同类型，那么如何分配它们呢？

Answer 1

在HomeViewController类中，您可以尝试使用verseLbl向Int.random分配随机值，例如，而不是分配verseModel，您应该分配{{ 1}}类，例如

VersesMock

Answer 2

您可以使用在 Swift 4.2 中引入的randomElement()。

verseLbl.text = verses.randomElement()?.verse

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2 个答案: