回答編集履歴
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サンプルコードの追加
test
CHANGED
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UICollectionViewLayoutのサブクラスを作って、Cellのサイズをカスタマイズしてください。
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---
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サンプルコード
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```Swift
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import UIKit
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class CollectionViewLayout: UICollectionViewLayout {
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override func collectionViewContentSize() -> CGSize {
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let width = self.collectionView!.bounds.width
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let numOfItems = self.collectionView!.numberOfItemsInSection(0)
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let lastAttribute = layoutAttributesForItemAtIndexPath(NSIndexPath(forRow: numOfItems-1, inSection: 0))
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let height = lastAttribute!.frame.maxY + 20
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return CGSizeMake(width, height)
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}
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override func layoutAttributesForElementsInRect(rect: CGRect) -> [AnyObject]? {
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let numOfItems = self.collectionView!.numberOfItemsInSection(0)
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return (0..<numOfItems).map {
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self.layoutAttributesForItemAtIndexPath(NSIndexPath(forRow: $0, inSection: 0))!
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}
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}
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override func layoutAttributesForItemAtIndexPath(indexPath: NSIndexPath) -> UICollectionViewLayoutAttributes? {
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let attribute = UICollectionViewLayoutAttributes(forCellWithIndexPath: indexPath)
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let contentWidth = self.collectionView!.bounds.width
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let row = CGFloat(indexPath.row)
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let x:CGFloat = 20.0
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let y:CGFloat = row * (row * 20.0 + 40.0) + 20.0
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let width:CGFloat = contentWidth - 40.0
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let height:CGFloat = row * 40.0 + 40.0
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attribute.frame = CGRectMake(x, y, width, height)
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return attribute
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}
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}
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```
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