the behavior of the UICollectionViewFlowLayout is not defined because:
** the item height must be less than the height of the UICollectionView minus the section insets top and bottom values, minus the content insets top and bottom values.**
The relevant UICollectionViewFlowLayout instance is <UICollectionViewFlowLayout: 0x7fabf9580f60>, and it is attached to <UICollectionView: 0x7fabf9875800; frame = (0 0; 320 125); clipsToBounds = YES; autoresize = RM+BM; gestureRecognizers = <NSArray: 0x7fabf9573f70>; layer = <CALayer: 0x7fabf95769d0>; contentOffset: {0, 0}; contentSize: {0, 125}> collection view layout: <UICollectionViewFlowLayout: 0x7fabf9580f60>.
Make a symbolic breakpoint at UICollectionViewFlowLayoutBreakForInvalidSizes to catch this in the debugger.
解决方法
- (void)viewDidLoad {
[super viewDidLoad];
//UICollectionViewController的属性
self.automaticallyAdjustsScrollViewInsets = NO;
}
