我在 View Controller 中有一个 UICollectionView。当用户单击其中一个图像时，它会转到一个单独的页面以打开图像。我不想每次都返回图库来更改图片，而是向左或向右滑动以获取下一张或上一张图片。

我已经看到了执行“pagingEnabled = true”的答案，但是你把它放在哪里呢？

我是 swift 的新手。

下面是我的代码。我在这里先向您的帮助表示感谢。

ViewController.swift

import UIKit

class ViewController: UIViewController, UICollectionViewDataSource, UICollectionViewDelegate
{
@IBOutlet weak var collectionView: UICollectionView!

let appleProducts = ["iPhone", "Apple Watch", "Mac", "iPad"]
let imageArray = [UIImage(named: "pug"), UIImage(named: "pug2"), UIImage(named: "pug3"), UIImage(named: "pug4")]

override func viewDidLoad()
{
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
}

override func didReceiveMemoryWarning()
{
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int
{
    return self.appleProducts.count
}

func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell
{

    let cell = collectionView.dequeueReusableCellWithReuseIdentifier("cell", forIndexPath: indexPath) as! CollectionViewCell

    cell.imageView?.image = self.imageArray[indexPath.row]

    cell.titleLabel?.text = self.appleProducts[indexPath.row]

    return cell

}

func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath)
{
    self.performSegueWithIdentifier("showImage", sender: self)
}

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?)
{
    if segue.identifier == "showImage"
    {
        let indexPaths = self.collectionView!.indexPathsForSelectedItems()!
        let indexPath = indexPaths[0] as NSIndexPath
        let vc = segue.destinationViewController as! NewViewController
        vc.image = self.imageArray[indexPath.row]!
        vc.title = self.appleProducts[indexPath.row]
    }
}

}

CollectionViewCell.swift

import UIKit

class CollectionViewCell: UICollectionViewCell
{
@IBOutlet weak var imageView: UIImageView!
@IBOutlet weak var titleLabel: UILabel!
}

NewViewController.swift

import UIKit

class NewViewController: UIViewController
{
@IBOutlet weak var imageView: UIImageView!
var image = UIImage()

override func viewDidLoad()
{
    super.viewDidLoad()

    self.imageView.image = self.image
}

override func didReceiveMemoryWarning()
{
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}


/*
// MARK: - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
    // Get the new view controller using segue.destinationViewController.
    // Pass the selected object to the new view controller.
}
*/

}

最佳答案

在点击后显示的 View Controller 中，您应该创建一个水平滚动的 UICollectionView。在此 Collection View 上，将其 pagingEnabled 属性设置为 true。

接下来要做的是重新格式化父 View Controller 中的 prepareForSegue 方法，以将整个图像数组以及选定的索引路径传递给呈现的 View Controller 。

然后，在您呈现的 View Controller 中，您应该将 Collection View 的数据源配置为显示所有图像，但请确保从父 View Controller 传递的初始选定索引路径开始。

关于ios - UICollectionView 快速滚动/滑动到下一个项目，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/37501901/