Swift/UIKit
[UIKit] CollectionView의 contentSize는 언제 할당 되는가? : view 가 그려지고 layout이 계산 되는 순서
insub4067
2022. 7. 22. 16:47
호출 순서
1. viewDidLoad { print(collectionView.collectionViewLayout.collectionViewContentSize.height) }
-> 0.0
2. viewWillAppear { print(collectionView.collectionViewLayout.collectionViewContentSize.height) }
-> 0.0
3. viewWillLayoutSubViews { print(collectionView.collectionViewLayout.collectionViewContentSize.height) }
-> 0.0
4. viewDidLayoutSubviews { print(collectionView.collectionViewLayout.collectionViewContentSize.height) }
-> 0.0
5. collectionView numberOfItesmInSection{}
6. collectionView cellForItemAt{ print(collectionView.collectionViewLayout.collectionViewContentSize.height) }
-> 1284.0
7. viewWillLayoutSubViews { print(collectionView.collectionViewLayout.collectionViewContentSize.height) }
-> 1284.0
8. viewDidLayoutSubViews { print(collectionView.collectionViewLayout.collectionViewContentSize.height) }
-> 1284.0
5. viewDidAppear { print(collectionView.collectionViewLayout.collectionViewContentSize.height) }
-> 1284.0