单个CollectionView中的两个单元格具有不同的尺寸

时间:2016-12-12 20:17:29

标签: ios swift uikit

我在一个集合视图中有两个单元格。它们都有不同的尺寸,但由于某些原因,在运行时,两个单元格似乎都具有相同的尺寸。

这是我的设置:

internal func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
    if cellType == .books {
        return books.count
    } else if cellType == .spotlights {
        return spotlights.count
    } else {
        return 0
    }
}

internal func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    if cellType == .books {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "booksCollectionCell", for: indexPath) as! BooksCollectionCell
        let bookTitle = books[indexPath.item].title
        let authors = books[indexPath.item].authors
        cell.configureCell(title: bookTitle, authorNames: authors)
        return cell
    } else {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "spotlightsCollectionCell", for: indexPath) as! spotlightsCollectionViewCell
        cell.configureCell(image: #imageLiteral(resourceName: "testImage"))
        return cell
    }
}

这是我的故事板截图:

enter image description here

这是为collectionView设置的:

enter image description here

编辑:所以我设法通过将此代码放在cellForItem中来获取somwhere(感谢cpatmulloy):

cell.frame = CGRect(x: cell.frame.origin.x, y: cell.frame.origin.y, width: 180.0, height: 130.0)

但是,这是结果(查看tableview中的最后一个单元格):

enter image description here

2 个答案:

答案 0 :(得分:1)

尝试在cellForItemAtIndex路径功能中明确设置单元格的高度和宽度。

请务必自己设置这些示例属性(即bookCellWidth)

internal func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        if cellType == .books {
            let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "booksCollectionCell", for: indexPath) as! BooksCollectionCell
            let bookTitle = books[indexPath.item].title
            let authors = books[indexPath.item].authors
            cell.configureCell(title: bookTitle, authorNames: authors)

            cell.frame = CGRect(x: cell.frame.origin.x, y: cell.frame.origin.y, width: bookCellWidth, height: bookCellHeight)

            return cell
        } else {
            let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "spotlightsCollectionCell", for: indexPath) as! spotlightsCollectionViewCell
            cell.configureCell(image: #imageLiteral(resourceName: "testImage"))

            cell.frame = CGRect(x: cell.frame.origin.x, y: cell.frame.origin.y, width: spotlightCellWidth, height: spotlightCellHeight)

            return cell
        }
    }

答案 1 :(得分:0)

好的,所以我设法解决了它!

首先我将UICollectionViewDelegateFlowLayout添加到cell类,然后:

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
    if cellType == .spotlights {
        return CGSize(width: 250.0, height: 180.0)
    } else {
        return (collectionViewLayout as! UICollectionViewFlowLayout).itemSize
    }
}
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