如何将按钮添加到 CollectionView 的末尾（不在最后一个单元格中）？

Question

如何将按钮添加到 CollectionView 的末尾就像在应用程序工作流中一样（设置按钮在末尾）？

我没有找到如何做到这一点。

工作流程

My app (So big screenshoot)

Answer 1

这可以使用UICollectionView footerView 来实现。下面是一个如何工作的示例：

首先，在ViewDidLoad注册你的页脚视图类：

override func viewDidLoad() {
    super.viewDidLoad()

    registerClass(myFooterViewClass, forSupplementaryViewOfKind: UICollectionElementKindSectionFooter, withReuseIdentifier: "Footer")

}

其次，要么在collectionViewFlowLayout 中设置headerReferenceSize，要么在UICollectionViewDelegate 中实现collectionView:layout:referenceSizeForHeaderInSection:。

第三，从dataSource返回footerView：

func collectionView(collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, atIndexPath indexPath: NSIndexPath) -> UICollectionReusableView {
     let view = collectionView.dequeueReusableSupplementaryViewOfKind(UICollectionElementKindSectionFooter, withReuseIdentifier: "myFooterView", forIndexPath: indexPath)

     // Add your button here

     return view
}

Answer 2

extension ViewController: UICollectionViewDataSource {
    func numberOfSections(in collectionView: UICollectionView) -> Int {
        return 5
    }
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return 1
    }
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        if indexPath.section != 5 {
            //without button Cell
            let cell = collectionView.dequeueReusableCell(withReuseIdentifier: contentCellIdentifier, for: indexPath) as! CollectionViewCell
            return cell
        } else {
            //with button Cell like setting Click
            let cell = collectionView.dequeueReusableCell(withReuseIdentifier: contentCellIdentifier, for: indexPath) as! CollectionViewCell
            return cell
        }
    }
}

extension ViewController:UICollectionViewDelegate,UICollectionViewDelegateFlowLayout{
    func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
        if indexPath.section == 5 {
            //open your viewController in which you want to setting view like.
        }
    }
    func collectionView(collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAtIndexPath indexPath: NSIndexPath) -> CGSize {
        return CGSize(width: screenWidth/2, height: screenWidth/3);
    }
}