如何运行循环？

import UIKit 
import Foundation 

var FamilyOne = ["Sarah", "Female", "Granddaughter"] 
var FamilyTwo = ["Isabel", "Female", "Granddaughter"] 
var FamilyThree = ["Maya", "Female", "Granddaughter"] 
var FamilyFour = ["Jean", "Female", "Daughter"] 
var FamilyFive = ["Jennie", "Female", "Daughter"] 

var MainArray = FamilyOne 

var FemaleArray = ["Ava", "Mary", "Ann", "Carolina", "Jessica", "Emily",  "Elizabeth"] 
var Photo = MainArray[0] 
var SImage = UIImage(named: Photo) 

var Gender = MainArray[1] 
var Relation = MainArray[2] 

class ViewController: UIViewController, UIImagePickerControllerDelegate, 
    UINavigationControllerDelegate { 

    @IBOutlet var image: UIImageView! 
    @IBOutlet var label: UILabel! 
    @IBOutlet var ButtonOne: UIButton! 
    @IBOutlet var BUttonTwo: UIButton! 
    @IBOutlet var ButtonThree: UIButton! 
    @IBOutlet var BUtton4: UIButton! 

    var SimageView = UIImageView(image: SImage!) 

    override func viewDidLoad() { 
     super.viewDidLoad() 

     label.text = ("What is the name of your \(Relation) ?") 

     SimageView.frame = CGRect(x: 67, y: 40, width: 240, height: 128) 
     view.addSubview(SimageView) 

     ButtonOne.setTitle(FemaleArray[4], for: UIControlState.normal) 
     BUttonTwo.setTitle(MainArray[0], for: UIControlState.normal) 
     ButtonThree.setTitle(FemaleArray[5], for: UIControlState.normal) 
     BUtton4.setTitle(FemaleArray[2], for: UIControlState.normal) 
    } 
}

我怎样才能把这个代码放到一个for循环，并让它变“MainArray”的价值FamilyTwo第二循环运行时，FamilyThree第三次循环运行，等。等。？当我在ViewController之前放置一个for循环时，我总是得到'不允许顶层表达的表达式'的错误。如何运行循环？

来源

2017-02-09 J.Doe

如果每个数组都表示一个家庭成员，那么创建一个自定义类来表示每个数组可能会更好。您可以将它命名为FamilyMember，并为其指定名称，性别和关系等字符串属性。 –

我如何理解，把它/叫做viewDidLoad（）'。如果你不熟悉viewControllers的生命周期，[检查出来]（http://stackoverflow.com/a/12608364/1457385）。 – shallowThought

-1

我不确定你想要完成什么，但是如果你只是想在运行时改变你的MainArray的值，可以将它们存储在一个新的集合中。

var FamilyOne = ["Sarah", "Female", "Granddaughter"] 
var FamilyTwo = ["Isabel", "Female", "Granddaughter"] 
var FamilyThree = ["Maya", "Female", "Granddaughter"] 
var FamilyFour = ["Jean", "Female", "Daughter"] 
var FamilyFive = ["Jennie", "Female", "Daughter"] 
let Families = [FamilyOne, FamilyTwo, FamilyThree, FamilyFour, FamilyFive] 

var MainArray = FamilyOne //set initial value? 

override func viewDidLoad() { 
    super.viewDidLoad() 
    //loop here 
    for family in Families{ 
     MainArray = family 
    } 
}

Expression not allowed on top level如果您在函数或类之外编写循环，这是正常的。

来源

2017-02-09 16:31:54 janusbalatbat

如何运行循环？

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