Ios 根据所选位置获取要更改的图像 导入UIKit 类ViewController:UIViewController{ @IBOutlet弱var firstSegControl:UISegmentedControl！ @IBOutlet弱var secondSegControl:UISegmentedControl！ @IBMOutlet弱变量msgLabel:UILabel！ @IBOutlet弱var位置ImageView:UIImageView！ var=curPlace=“基内兰” //这将列出所有的城市 //还有所有的地方。 让城市：[字符串]=[ “列克星敦”， “成都”， “芝加哥”， “香港”， ] 让位置：[[String]]=[ [“基尼兰”、“植物园”]， [“熊猫”、“步行街”]， [“千年”、“空中甲板”、“巡航”、“天文馆”]， [“迪士尼乐园”、“海洋公园”、“山顶”] ] //这是允许两个分段控制器同时工作的动作功能。 @iAction func LocationChoiceSimade（\发送方：UISegmentedControl）{ updateSecondSegControl（sender.selectedSegmentIndex） } @iAction func LabelChoiceSimade（uu发送方：UISegmentedControl）{ curPlace=sender.titleForSegment（在：sender.selectedSegmentIndex）！ msgLabel.text=（curPlace） } 重写func viewDidLoad（）{ super.viewDidLoad（） //加载视图后执行任何其他设置。 firstSegControl.removeAllSegments（）文件 因为我在虚空中{ secondSegControl.removeAllSegments（） 对于0中的i..

开始时，您需要考虑您的数据

大概，您要么拥有一个数据库，要么从远程服务器获取信息

您可能有如下数据结构：

import UIKit

class ViewController: UIViewController {
    @IBOutlet weak var firstSegControl: UISegmentedControl!
    @IBOutlet weak var secondSegControl: UISegmentedControl!
    @IBOutlet weak var msgLabel: UILabel!
    
    @IBOutlet weak var locationImageView: UIImageView!
    var = curPlace = "Keeneland"

    //This will list all of the cities
    //and all of the places.
    let cities: [String] = [
            "Lexington",
            "Chengdu",
            "Chicago",
            "Hongkong",
        ]
        let places: [[String]] = [
            ["Keeneland", "Arboretum"],
            ["Panda", "Pedestrian Street"],
            ["Millenium", "Skydeck", "Cruise", "Planetarium"],
            ["Disneyland", "Ocean Park", "The Peak"]
        ]
    //This is the action function that allows the two segmented controlls to work alongside eachother.
    @IBAction func locationChoiceIsMade(_ sender: UISegmentedControl) {
        updateSecondSegControl(sender.selectedSegmentIndex)
    }
    @IBAction func labelChoiceIsMade(_ sender: UISegmentedControl) {
        curPlace = sender.titleForSegment(at: sender.selectedSegmentIndex)!
        msgLabel.text = (curPlace)
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
        firstSegControl.removeAllSegments()
                for i in 0..<cities.count {
                    firstSegControl.insertSegment(withTitle: cities[i], at: i, animated: false)
                }
                firstSegControl.selectedSegmentIndex = 0
                updateSecondSegControl(0)
    }
    //This will make the second segmented control update based off of the first ones selection.
    func updateSecondSegControl(_ n: Int) -> Void {
            secondSegControl.removeAllSegments()
            for i in 0..<places[n].count {
                secondSegControl.insertSegment(withTitle: places[n][i], at: i, animated: false)
            }
            secondSegControl.selectedSegmentIndex = 0
    }
    
}

然后，您将创建一个数据数组：

struct Place {
    var placeName: String = ""
    var imgName: String = ""
}

struct City {
    var cityName: String = ""
    var places: [Place] = []
}

您将填充数组：

var cities: [City] = []

现在，要填充第一个分段控件：

    var somePlace: [Place]!
    var aPlace: Place!
    var aCity: City!
    
    // Lexington
    somePlace = []
    
    aPlace = Place(placeName: "Keeneland", imgName: "KeenelandPicture")
    somePlace.append(aPlace)
    
    aPlace = Place(placeName: "Arboretum", imgName: "ArboretumPicture")
    somePlace.append(aPlace)

    aCity = City(cityName: "Lexington", places: somePlace)

    cities.append(aCity)

    
    // Chengdu
    somePlace = []
    
    aPlace = Place(placeName: "Place 1", imgName: "Place1Picture")
    somePlace.append(aPlace)
    
    aPlace = Place(placeName: "Place 2", imgName: "Place2Picture")
    somePlace.append(aPlace)
    
    aCity = City(cityName: "Chengdu", places: somePlace)
    
    cities.append(aCity)
    
    // and so on

    firstSegControl.removeAllSegments()
    for i in 0..<cities.count {
        let aCity = cities[i]
        firstSegControl.insertSegment(withTitle: aCity.cityName, at: i, animated: false)
    }

---

你需要详细解释你的问题。没有人会阅读你的代码，发现你面临的实际问题是什么。详细阐述你的问题。非常感谢！看到的例子对我来说是改变游戏规则的因素。

func updateSecondSegControl(_ n: Int) -> Void {
    secondSegControl.removeAllSegments()
    let aCity = cities[n]
    let places = aCity.places
    for i in 0..<places.count {
        let aPlace = places[i]
        secondSegControl.insertSegment(withTitle: aPlace.placeName, at: i, animated: false)
    }
    secondSegControl.selectedSegmentIndex = 0
}

    let aCity = cities[firstSegControl.selectedSegmentIndex]
    let places = aCity.places
    let aPlace = places[secondSegControl.selectedSegmentIndex]
    if let img = UIImage(named: aPlace.imgName) {
        locationImageView.image = img
    }