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我现在有一个集合视图,上面有图像网格,当选择一个图像时,这个图像会嵌入另一个集合视图上,并带有全屏图像。CollectionView方向问题
要做到这一点,我使用:
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:@"collectionView"])
{
QuartzDetailViewController *destViewController = (QuartzDetailViewController *)segue.destinationViewController;
NSIndexPath *indexPath = [[self.collectionView indexPathsForSelectedItems] objectAtIndex:0];
destViewController.startingIndexPath = indexPath;
[destViewController.collectionView scrollToItemAtIndexPath:indexPath atScrollPosition:UICollectionViewScrollPositionCenteredHorizontally animated:NO];
[self.collectionView deselectItemAtIndexPath:indexPath animated:NO];
}
}
,然后在我的局部视图:顶部的变化
- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
if (_startingIndexPath) {
NSInteger currentIndex = floor((scrollView.contentOffset.x - scrollView.bounds.size.width/2)/scrollView.bounds.size.width) + 1;
if (currentIndex < [self.quartzImages count]) {
self.title = self.quartzImages[currentIndex][@"name"];
}
}
}
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
UICollectionViewFlowLayout *layout = (UICollectionViewFlowLayout *)self.collectionView.collectionViewLayout;
layout.itemSize = self.view.bounds.size;
[self.collectionView scrollToItemAtIndexPath:self.startingIndexPath atScrollPosition:UICollectionViewScrollPositionCenteredHorizontally animated:NO];
}
当我旋转为横向图像中消失的标题,如果我返回到网格,然后再次选择一个单元,它会再次继续到详细视图,但标题是针对不同的单元格,并且图像显示两个不同图像之间的一半和一半。
我收到以下消息以及对日志的时候我旋转设备:
2013-06-04 17:39:53.869 PhotoApp[6866:907] the behavior of the UICollectionViewFlowLayout is not defined because:
2013-06-04 17:39:53.877 PhotoApp[6866:907] the item height must be less that the height of the UICollectionView minus the section insets top and bottom values.
我怎样才能纠正这种因此它会支持的方向。
感谢
请参阅我的答案在这个岗位http://stackoverflow.com/questions/13902469/ios-6-supportedinterfaceorientations-issue/13902779#13902779 –
仍然无法正常工作,尝试了三种方式,并且仍然存在相同的问题。我也收到了这个警告:2013-06-04 17:39:53.869 PhotoApp [6866:907] UICollectionViewFlowLayout的行为没有定义,因为: 2013-06-04 17: 39:53.877 PhotoApp [6866:907]项目高度必须小于UICollectionView的高度减去顶部和底部值的部分。 – David