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UICollectionView Header 和Footer
@interface FooterView : UICollectionReusableView
Footer 和 Header 基于 UICollectionReusableView
重用标识
static NSString * headeridentifier = @"header";
static NSString * footeridentifier = @"FOOTER";
注册重用标识符
第一个参数 : 返回的view类型
第二个参数: 设置view的种类 (header , footer)
第三个参数: 设置重用标识符
[cView registerClass:[HeaderView class] forSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:headeridentifier];
[cView registerClass:[FooterView class] forSupplementaryViewOfKind:UICollectionElementKindSectionFooter withReuseIdentifier:footeridentifier];
Header 和 Footer 重用
- (UICollectionReusableView *)collectionView:(UICollectionView *)collectionView viewForSupplementaryElementOfKind:(NSString *)kind atIndexPath:(NSIndexPath *)indexPath
{
if ([kind isEqualToString:UICollectionElementKindSectionHeader]) {
HeaderView * headerView = [collectionView dequeueReusableSupplementaryViewOfKind:kind withReuseIdentifier:headeridentifier forIndexPath:indexPath];
headerView.backgroundColor = [UIColor whiteColor];
headerView.label.text = @"header";
headerView.label.textAlignment = NSTextAlignmentCenter;
return headerView;
}
FooterView * footerView = [collectionView dequeueReusableSupplementaryViewOfKind:kind withReuseIdentifier:footeridentifier forIndexPath:indexPath];
footerView.backgroundColor = [UIColor whiteColor];
footerView.label.text = @"footer";
footerView.label.textAlignment = NSTextAlignmentCenter;
return footerView;
}
UICollectionView Header 和Footer