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UICollectionView自動布局

Hai Feng Kao
March 27, 2018
Programming
1
440

 UICollectionView自動布局

UICollectionView layout和self-sizing cell的介紹

Hai Feng Kao

March 27, 2018
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Transcript

  1. UICollectionView⾃自動布局 Hai Feng Kao

  2. UICollectionViewLayout • collectionViewContentSize: • layoutAttributesForElements(in:): • layoutAttributesForItem(at:): • shouldInvalidateLayout(forBoundsChange:):

  3. 會⾃自⼰己調整⼤大⼩小的cell • layoutAttributesForElements(in:): • layoutAttributesForItem(at:): • cellForItemAt: • preferredLayoutAttributesFitting(_:) •

    shouldInvalidateLayout(forPreferred LayoutAttributes: withOriginalAttributes) • invalidationContext(forPreferredLayo utAttributes: withOriginalAttributes)

  4. Reference and images credit • http://martiancraft.com/blog/2017/05/collection-view- layouts/