我有一个 UICollection View ,看起来像这样(看到两个紫色和蓝色边框):
在 iOS 10 上没有标题/空格,但在 iOS11 上有。我已经尝试了这里提到的所有内容:How can I enable/disable section headers in UICollectionView programmatically?
我的代码目前看起来像这样:
- (void) viewDidLoad
{
[super viewDidLoad];
autocompleteLayout = [[SQLProAutocompleteFlowLayout alloc] init];
autocompleteLayout.headerReferenceSize = CGSizeZero;
autocompleteCollectionView = [[UICollectionView alloc] initWithFrame: CGRectZero
collectionViewLayout: autocompleteLayout];
autocompleteCollectionView.insetsLayoutMarginsFromSafeArea = NO;
[self.view addSubview: autocompleteCollectionView];
// removed layout code (leftAnchor, rightAnchor, topAnchor, bottomAnchor).
autocompleteCollectionView.delegate = self;
autocompleteCollectionView.dataSource = self;
// Removed nib register code
self.view.layer.borderColor = [UIColor redColor].CGColor;
self.view.layer.borderWidth = 1;
autocompleteCollectionView.layer.borderColor = [UIColor blueColor].CGColor;
autocompleteCollectionView.layer.borderWidth = 2;
}
- (CGSize) collectionView: (UICollectionView *) collectionView
layout: (UICollectionViewLayout *) collectionViewLayout
referenceSizeForHeaderInSection:(NSInteger)section
{
return CGSizeZero;
}
- (CGSize)collectionView:(UICollectionView *)collectionView
layout:(UICollectionViewLayout *)collectionViewLayout
referenceSizeForFooterInSection:(NSInteger)section
{
return CGSizeZero;
}
我的 FlowLayout 看起来像这样:
- (void) setupLayout
{
self.minimumInteritemSpacing = 0;
self.minimumLineSpacing = 0;
self.scrollDirection = UICollectionViewScrollDirectionVertical;
} // End of setupLayout
- (void) prepareLayout
{
[super setItemSize: [self itemSize]];
[super setSectionInset: [self sectionInset]];
self.minimumLineSpacing = 0;
[super prepareLayout];
} // End of prepareLayout
- (CGFloat) itemWidth
{
return self.collectionView.frame.size.width;
}
- (CGSize) itemSize
{
CGSize result = CGSizeMake(self.collectionView.frame.size.width,
rowHeight);
return result;
}
- (void) setItemSize:(CGSize)itemSize
{
self.itemSize = CGSizeMake(self.collectionView.frame.size.width,
rowHeight);
}
- (CGPoint) targetContentOffsetForProposedContentOffset:(CGPoint)proposedContentOffset
{
return CGPointZero;
}
我还验证了 UICollectionView 的 contentInset 已归零。
我错过了什么?为什么我的 UICollectionView 仍然有空格?
最佳答案
在 iOS 11 中,UIScrollView 发生了一些变化。
尝试设置 contentInsetAdjustmentBehavior属性
collectionView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
关于ios - UICollectionView 删除空格/标题 iOS11,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/45374136/