Ios 单元格之间的间距不正确UICollectionView

我有一个UICollectionView，其中包含UICollectionViewCells，其中包含用于内容的UIButtons

但是，每个单元格之间的间距不正确。集合视图中的单元格大小不特定，因为它应该是一个标签列表，标签的长度明显不同

下面是它的样子：

每个单元格之间的水平间距完全不正确，因为它们每行都不同

单元格的代码：

class ViewController: UIViewController, UICollectionViewDataSource, UICollectionViewDelegate {
    @IBOutlet weak var wordsCollection: UICollectionView!
    var items = ["test", "this", "word view", "like", "collection", "testing", "give", "this", "testing", "test", "test", "this", "word view", "like", "collection", "testing", "give", "this", "testing", "test", "test", "this", "word view", "like", "collection"]
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return self.items.count
    }

    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "wordCell", for: indexPath as IndexPath) as! WordCell
        cell.wordButton.setTitle(items[indexPath.row], for: UIControlState.normal)
        cell.wordButton.backgroundColor = UIColor.gray
        if(indexPath.row % 3 == 0){
            cell.wordButton.backgroundColor = UIColor.gray
        }
        cell.wordButton.clipsToBounds = true
        cell.wordButton.layer.cornerRadius = 2
        cell.wordButton.sizeToFit()

        return cell
    }

    override func viewDidLoad() {
        super.viewDidLoad()
        if let flowLayout = wordsCollection.collectionViewLayout as? UICollectionViewFlowLayout { flowLayout.estimatedItemSize = CGSize(width:1, height:1) }
        // 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.
    }


}

语言为Swift 4，Im以iOS 10.3为目标。

实现：UICollectionViewDelegateFlowLayout

然后：

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumInteritemSpacingForSectionAt section: Int) -> CGFloat {
    return THE_SPACING_AMOUNT
}

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumLineSpacingForSectionAt section: Int) -> CGFloat {
    return SPACING_BETWEEN_ROWS
}

---

您尚未实现UICollectionview的流布局委托，然后实现interItemSpacing和MinimumLineSpacing方法感谢您的建议！刚刚给了它一个机会，它已经进步了，但它仍然有一些排。你想把它们对齐吗？否则它只会尝试填充行，我猜您在单元格中使用autalayout，尝试将前导/尾随的优先级设置为500，但这没有任何区别。我认为单元格已启用自动布局，因为flowLayout.estimatedItemSize=CGSizewidth:1，高度：1在我的viewDidLoad func中。抱歉，我认为在您的WordCell中存在一些混淆，标签上的前导和尾随约束优先级为500，不用担心！是的，对不起，我是说我试过500号优先权标签上的限制条件