ios - 将图像数组发送到新的 View Controller

Question

我目前有一个 Tableview，当用户点击时，会将它们发送到一个显示一张图片的新 View Controller 。但是，因为我需要它们能够滑动以显示与第一张图片相关联的第二张图片(取决于选择的行)，所以我正在尝试创建一个要发送的数组。我(认为？)已经成功创建了一个数组，但我遇到了代码问题，因为它无法正确“发送”。我想知道我哪里错了，我需要做哪些更改才能发送数组，以便用户可以滑动并查看第二张图片。如果您需要更多代码，请告诉我，我将在其中对其进行编辑。谢谢!

let firstchoice: [UIImage] = [
    UIImage(named: "Appa1")!,
    UIImage(named: "Appa2")!
    ]


func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath)
{
    ///Right way here
    ///You can easily manage using this
    let Vc = self.storyboard?.instantiateViewController(withIdentifier: "imageViewController") as! imageViewController



    ///Here you have written four Animal names in Array
    ///So There is going to four case 0,1,2,3 and a default case
    switch indexPath.row
    {
    case 0:
        Vc.passedImage = UIImage.init(named: firstchoice)
        self.navigationController?.pushViewController(Vc, animated: true)
        break;
    case 1:
        Vc.passedImage = UIImage.init(named: "AppA2")!
        self.navigationController?.pushViewController(Vc, animated: true)
        break;
    case 2:
        Vc.passedImage = UIImage.init(named: "AppB")!
        self.navigationController?.pushViewController(Vc, animated: true)
        break;
    case 3:
        Vc.passedImage = UIImage.init(named: "AppC")!
        self.navigationController?.pushViewController(Vc, animated: true)
        break;
    case 4:
        Vc.passedImage = UIImage.init(named: "AppD")!
        self.navigationController?.pushViewController(Vc, animated: true)
        break;
    case 5:
        Vc.passedImage = UIImage.init(named: "AppE")!
        self.navigationController?.pushViewController(Vc, animated: true)
        break;

ImageView Controller :

import UIKit
import GoogleMobileAds


class imageViewController: UIViewController,GADBannerViewDelegate, UIGestureRecognizerDelegate, UIScrollViewDelegate {

    var bannerView: GADBannerView!

    @IBOutlet weak var scrollView: UIScrollView!
    @IBOutlet weak var myImageView: UIImageView!


    //var passedImage : UIImage! = nil
    var passedImage : [UIImage]


    override func viewDidLoad(){
        super.viewDidLoad()
        self.myImageView.image = passedImage
        self.navigationController?.navigationBar.isHidden = false

        scrollView.minimumZoomScale = 1.0
        scrollView.maximumZoomScale = 5.0

Answer 1

您的 passedImage 似乎是 imageViewController 中的一个 UIImage 变量。您需要做的是将其更改为 [UIImage]。这将使您可以存储一组图像。

之后你切换会是这样的。

switch indexPath.row {
    case 0:
        Vc.passedImage = firstchoice
        self.navigationController?.pushViewController(Vc, animated: true)
        break;
    case 1:
        Vc.passedImage = [UIImage.init(named: "AppA2")!]
        self.navigationController?.pushViewController(Vc, animated: true)
        break;
    case 2:
    // Rest of your cases follow suit.
}

您需要使用相应的索引从图像数组中访问图像。

旁注:使用 lowerCamelCase 作为变量名，就像他们在 Swift naming conventions 中所说的那样.