在Swift中將圖像從tableView傳遞到viewController

Question

我在Assets文件夾中有圖像，我試圖將數據從tableView傳遞到下一個viewController.I有兩個表，我創建了到UIImageView的出口。
ThirdView.swift包含結構
導入UIKit

struct ThirdView {
var ThirdViewArray = [String]()
var Pic = [String]()
}

SecondTableViewController.swift包含

class SecondTableViewController: UITableViewController {

var ExerciseListArray = [String]()
var SecondAnswerArray = [String]()



override func viewDidLoad() {
    super.viewDidLoad()
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return ExerciseListArray.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    var Cell = self.tableView.dequeueReusableCell(withIdentifier: "SecondCell", for: indexPath) as UITableViewCell
    Cell.textLabel?.text = ExerciseListArray[indexPath.row]

    return Cell
}

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    var indexPath: NSIndexPath = self.tableView.indexPathForSelectedRow! as NSIndexPath
    var DestViewController = segue.destination as! ExercisesViewController
    DestViewController.FirstString = SecondAnswerArray[indexPath.row]
    DestViewController.ExerciseImage = SecondAnswerArray[indexPath.row]
}


}

但是，SecondAnswerArray是一種字符串類型，出現錯誤：
DestViewController.ExerciseImage = SecondAnswerArray [indexPath.row]行上的“無法分配類型字符串的值來鍵入UIImage”
最后，FirstTableViewController.swift：類FirstTableViewController：UITableViewController {

var BodyPartsArray = [String]()
var SecondArray = [SecondTable]()
var ThirdArray = [ThirdView]()

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
    BodyPartsArray = ["Neck", "Shoulders", "Upper Arms", "Forearms", "Back", "Chest", "Waist", "Hips", "Thighs", "Calves"]

    SecondArray = [
    SecondTable(SecondTitle: ["Neck1","Neck2","Neck3"]),
    SecondTable(SecondTitle: ["Shoulders1","Shoulders2","Shoulders3"]),
    SecondTable(SecondTitle: ["Upper Arms1","Upper Arms2","Upper Arms3"]),
    SecondTable(SecondTitle: ["Forearms1","Forearms2","Forearms3"]),
    SecondTable(SecondTitle: ["Back1","Back2","Back3"]),
    SecondTable(SecondTitle: ["Chest1","Chest2","Chest3"]),
    SecondTable(SecondTitle: ["Waist1","Waist2","Waist3"]),
    SecondTable(SecondTitle: ["Hips1","Hips2","Hips3"]),
    SecondTable(SecondTitle: ["Thighs1","Thighs2","Thighs3"]),
    SecondTable(SecondTitle: ["Calves1","Calves2","Calves3"])]

    ThirdArray = [
        ThirdView(ThirdViewArray: ["NeckText1","NeckText2","NeckText3"], Pic: []),
        ThirdView(ThirdViewArray: ["ShouldersText1","ShouldersText2","ShouldersText3"], Pic: ["310","311","312"]),
        ThirdView(ThirdViewArray: ["Upper ArmsText1","Upper ArmsText2","Upper ArmsText3"], Pic: ["313","314","315"]),
        ThirdView(ThirdViewArray: ["ForearmsText1","ForearmsText2","ForearmsText3"], Pic: ["","",""]),
        ThirdView(ThirdViewArray: ["BackText1","BackText2","BackText3"], Pic: ["","",""]),
        ThirdView(ThirdViewArray: ["ChestText1","ChestText2","ChestText3"], Pic: ["","",""]),
        ThirdView(ThirdViewArray: ["WaistText1","WaistText2","WaistText3"], Pic: ["","",""]),
        ThirdView(ThirdViewArray: ["HipsText1","HipsText2","HipsText3"], Pic: ["","",""]),
        ThirdView(ThirdViewArray: ["ThighsText1","ThighsText2","ThighsText3"], Pic: ["","",""]),
        ThirdView(ThirdViewArray: ["CalvesText1","CalvesText2","CalvesText3"], Pic: ["","",""])]
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return BodyPartsArray.count
}

override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let Cell = self.tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath) as UITableViewCell
    Cell.textLabel?.text = BodyPartsArray[indexPath.row]

    return Cell
}

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {

    let indexPath: NSIndexPath = self.tableView.indexPathForSelectedRow! as NSIndexPath
    let DestViewController = segue.destination as! SecondTableViewController
    var SecondTableArrayTwo: SecondTable
    SecondTableArrayTwo = SecondArray[indexPath.row]
    DestViewController.ExerciseListArray = SecondTableArrayTwo.SecondTitle


    var ThirdAnswerArray: ThirdView
    ThirdAnswerArray = ThirdArray[indexPath.row]
    DestViewController.SecondAnswerArray = ThirdAnswerArray.ThirdViewArray
    DestViewController.SecondAnswerArray = ThirdAnswerArray.Pic
}

}

再次，我在DestViewController.SecondAnswerArray = ThirdAnswerArray.Pic行上遇到了相同的錯誤

ExercisesViewController：
導入UIKit

class ExercisesViewController：UIViewController {

@IBOutlet weak var TextView: UITextView!
@IBOutlet weak var ImageView: UIImageView!

var FirstString = String()
var ExerciseImage = String()

override func viewDidLoad() {

    TextView.text = FirstString
    ImageView.image = ExerciseImage

}
}

誰能幫助我解決此錯誤，並且還向我展示將圖片從Assets加載到FirstTableViewController.swift ThirdArray中的UIImageView的正確方法？
謝謝

Answer 1

無法在DestViewController.ExerciseImage = SecondAnswerArray [indexPath.row]行上將String類型的值分配為UIImage類型”

錯誤消息告訴您一切。 ExerciseImage是UIImage類型，您正在為其分配String。

首先創建UIImage對象，然后將其分配給ExerciseImage

let image = UIImage(named: SecondAnswerArray[indexPath.row])
DestViewController.ExerciseImage = image

Answer 2

如果您可以共享ExercisesViewController的代碼以得到更好的建議，那將是很好的，但這可能會幫助您：

首先， ExercisesViewController中的變量DestViewController.ExerciseImage可能是UIImage類型，在數組SecondAnswerArray上包含String類型的對象。 如此處聲明：

var SecondAnswerArray = [String]()

當您將SecondAnswerArray中的值分配給應該是UIImage的對象時，您會得到該錯誤提示

無法將String類型的值分配為UIImage類型”

將ExercisesViewController.ExerciseImage的類型更改為String類型，這將解決您的第一個問題。

要從Asset文件夾設置圖像，您只需將圖像文件名分配給UIImage即可，如下所示：

let img = UIImage(named: "NAME_OF_YOUR_FILE_WITHOUT_EXTENSION")

然后將該圖像設置為UIImageView

imageView.image = img

希望能有所幫助