Xcode - UIViewController 中的 UICollectionView
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Xcode - UICollectionView inside UIViewController
提问by Abdou023
I'm trying to insert a collection view inside a UIViewController:
我正在尝试在 UIViewController 中插入一个集合视图：
import UIKit
class imagesViewController: UIViewController, UICollectionViewDelegate, UICollectionViewDataSource {
var labels = ["label1", "label2", "label3"]
@IBOutlet weak var collectionView: UICollectionView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
self.collectionView.registerClass(UICollectionViewCell.self, forCellWithReuseIdentifier: "cell")
collectionView.backgroundColor = UIColor.redColor()
collectionView.delegate = self
collectionView.dataSource = self
}
func numberOfSectionsInCollectionView(collectionView: UICollectionView) -> Int {
//#warning Incomplete method implementation -- Return the number of sections
return 1
}
func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
//#warning Incomplete method implementation -- Return the number of items in the section
return labels.count
}
func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCellWithReuseIdentifier("cell", forIndexPath: indexPath) as! UICollectionViewCell
// Configure the cell
var title = UILabel(frame: CGRectMake(0, 0, cell.bounds.size.width, cell.bounds.size.height))
cell.contentView.addSubview(title)
title.text = labels[indexPath.row]
title.textColor = UIColor.yellowColor()
return cell
}
The app runs but it doesn't seem that the collection view is linked properly to the class, none of the configurations I made works,it just appears blank. Strangely enough I had to copy/paste the functions for the collection view because the autocomplete only shows some of the collectionview methods.
该应用程序运行，但似乎集合视图没有正确链接到类，我所做的配置都不起作用，它只是显示为空白。奇怪的是，我不得不复制/粘贴集合视图的函数，因为自动完成只显示一些集合视图方法。
回答by Joseph Geraghty
If you created your cells using StoryBoard, then I had this same problem and was able to solve it by removing
如果您使用 StoryBoard 创建了单元格，那么我遇到了同样的问题，并且能够通过删除来解决它
self.collectionView.registerClass(UICollectionViewCell.self, forCellWithReuseIdentifier: "cell")
That line, if you defined a cell in StoryBoard, seems to duplicate efforts and block any of the cells from displaying.
如果您在 StoryBoard 中定义了一个单元格，那一行似乎重复了工作并阻止了任何单元格的显示。
