[英]UICollectionView header position in horizontal scroll direction mode with flow layout
I have ios UICollectionView with Flow layout with horizontal scroll direction. 我有带有水平滚动方向的Flow布局的ios UICollectionView。 In this situation typical header position is on the left side of cells. 在这种情况下,典型的标题位置位于单元格的左侧。
I want to make header on the top of section cells 我想在节细胞的顶部制作标题
Have you any idea how can I do this? 你知道我怎么能这样做吗?
I solved the problem using DateFlowLayout . 我使用DateFlowLayout解决了这个问题。
See how I configured it in this other answer . 看看我在另一个答案中如何配置它。
I think you can get what you need using standard behavior for the header. 我认为您可以使用标头的标准行为获得所需的内容。
Set it up (probably in viewDidLoad): 设置它(可能在viewDidLoad中):
UICollectionViewFlowLayout *flowLayout = [[UICollectionViewFlowLayout alloc] init];
flowLayout.headerReferenceSize = CGSizeMake(self.collectionView.bounds.size.width, 30);
// other setup
[self.collectionView setCollectionViewLayout:flowLayout];
Then answer a header view: 然后回答标题视图:
#define MY_HEADER_LABEL_TAG 128
- (UICollectionReusableView *)collectionView:(UICollectionView *)collectionView viewForSupplementaryElementOfKind:(NSString *)kind atIndexPath:(NSIndexPath *)indexPath {
UICollectionReusableView *headerView = [collectionView dequeueReusableSupplementaryViewOfKind:
UICollectionElementKindSectionHeader withReuseIdentifier:@"SectionHeader" forIndexPath:indexPath];
UILabel *label = (UILabel *)[headerView viewWithTag:MY_HEADER_LABEL_TAG];
if (!label) {
label = [[UILabel alloc] initWithFrame:CGRectInset(headerView.bounds, 5, 5)];
label.tag = MY_HEADER_LABEL_TAG;
label.font = [UIFont boldSystemFontOfSize:12];
label.textColor = [UIColor darkGrayColor];
[headerView addSubview:label];
}
label.text = [NSString stringWithFormat:@"Section %d", indexPath.section];
return headerView;
}
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