如何在 swift 的 Collection View 中同时制作页眉和页脚？

我正在尝试将页眉和页脚组合在一起，但它总是崩溃，我找不到快速教程来理解它。

我不知道如何返回两者的补充 View ，而只是一个。

我将它们都设置在 Storyboard上(类 + 标识符)

 override func numberOfSectionsInCollectionView(collectionView: UICollectionView) -> Int {
    //#warning Incomplete method implementation -- Return the number of sections
    return 2
}


override func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
    //#warning Incomplete method implementation -- Return the number of items in the section
    return 10
}




override func collectionView(collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, atIndexPath indexPath: NSIndexPath) -> UICollectionReusableView {
    var header: headerCell!
    var footer: footerCell!



    if kind == UICollectionElementKindSectionHeader {
        header =
            collectionView.dequeueReusableSupplementaryViewOfKind(kind,
                withReuseIdentifier: "header", forIndexPath: indexPath)
            as? headerCell

}
    return header

}

Error: UICollectionElementKindCell with identifier one - must register a nib or a class for the identifier or connect a prototype cell in a storyboard'

override func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> profileCC {
    let cell = collectionView.dequeueReusableCellWithReuseIdentifier("one", forIndexPath: indexPath) as! profileCC

    // Configure the cell

    return cell
}



override func collectionView(collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, atIndexPath indexPath: NSIndexPath) -> UICollectionReusableView {

    switch kind {

    case UICollectionElementKindSectionHeader:

        let headerView = collectionView.dequeueReusableSupplementaryViewOfKind(kind, withReuseIdentifier: "header", forIndexPath: indexPath) as! headerCell

        headerView.backgroundColor = UIColor.blueColor();
        return headerView

    case UICollectionElementKindSectionFooter:
        let footerView = collectionView.dequeueReusableSupplementaryViewOfKind(kind, withReuseIdentifier: "footer", forIndexPath: indexPath) as! footerCell

        footerView.backgroundColor = UIColor.greenColor();
        return footerView

    default:

        assert(false, "Unexpected element kind")
    }
}

希望有人能帮忙

最佳答案

您可以创建一个 UICollectionViewController 来处理 UICollectionView 并在 Interface Builder 中激活 Footer 和 Header 部分, 那么你可以使用下面的方法在你的 UICollectionView 添加的两个部分中进行预览:

override func collectionView(collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, atIndexPath indexPath: NSIndexPath) -> UICollectionReusableView {
    
    switch kind {
        
    case UICollectionView.elementKindSectionHeader:
        
        let headerView = collectionView.dequeueReusableSupplementaryView(ofKind: kind, withReuseIdentifier: "Header", for: indexPath)
        
        headerView.backgroundColor = UIColor.blue
        return headerView
        
    case UICollectionView.elementKindSectionFooter:
        let footerView = collectionView.dequeueReusableSupplementaryView(ofKind: kind, withReuseIdentifier: "Footer", for: indexPath)
        
        footerView.backgroundColor = UIColor.green
        return footerView
        
    default:
        
        assert(false, "Unexpected element kind")
    }
}

在上面的代码中，我将页脚和页眉的identifier设置为Header和Footer，您可以按照想。如果要创建自定义页眉或页脚，则需要为每个创建 UICollectionReusableView 的子类，并根据需要对其进行自定义。

您可以在 Interface Builder 或代码中注册您的自定义页脚和页眉类:

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

关于ios - 如何使用 swift 在 Collection View 中制作页眉和页脚，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/29655652/