无法在标签中显示诗句

Question

我正在尝试显示一个数组的随机项，我有这个文件：

//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())
    ]
}

还有这个：

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，但它说

“无法将类型 '[VerseModel]' 的值分配给类型 'String？'”

是的，我知道我不能分配它们，因为它们来自不同的类型，那么我该如何分配它们呢？

Answer 1

在HomeViewController 类中，您可以尝试使用Int.random[例如] 为verseLbl 分配随机值，而不是分配verseModel，您应该分配VersesMock 类的verse 对象，例如

var verses = VersesMock().verses

override func viewDidLoad() {
    super.viewDidLoad()

    let count = verses.count
    let randomIndex = Int.random(in: 0...(count - 1)) //or use your specific array index
    nameLabel.text = user.name
    verseLbl.text = verses[randomIndex].verse
}

Answer 2

您可以使用 在 Swift 4.2 中引入的randomElement()。

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