ios UICollectionView簡單說明

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原諒我記不住寫下來好了

UICollectionViewFlowLayout 流式自動布局 繼承於UICollectionViewLayout

初始化:[[UICollectionViewFlowLayout alloc]init]

屬性說明:

  minimumLineSpacing:cell上下間距

  minimumInteritemSpacing:左右間距

  itemSize:cell的size

  scrollDirection:方向

  sectionInset:模組的邊距

  headerReferenceSize:heder尺寸

  footerReferenceSize:footer尺寸

UICollectionView 集合視圖

初始化:[[UICollectionView alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height) collectionViewLayout:flowLayout];

註冊cell:[_collectionView registerClass:[CollectionViewCell class] forCellWithReuseIdentifier:@"CollectionViewCell"];

     registerNib:(nullable UINib *)nib forCellWithReuseIdentifier:(NSString *)identifier(xib)
註冊reusableView:[_collectionView registerClass:[CollectionReusableView class] forSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:@"reusableView"];

          registerNib:(nullable UINib *)nib forSupplementaryViewOfKind:(NSString *)kind withReuseIdentifier:(NSString *)identifier;

常用代理:UICollectionViewDataSource

       - (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section;

     - (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath;

       - (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView;

       - (UICollectionReusableView *)collectionView:(UICollectionView *)collectionView viewForSupplementaryElementOfKind:(NSString *)kind atIndexPath:(NSIndexPath *)indexPath;

 

      UICollectionViewDelegate

     - (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath

 

     UICollectionViewDelegateFlowLayout

     - (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath;

 推薦:UICollectionViewLeftAlignedLayout 使其靠左對齊 

ios UICollectionView簡單說明

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