我该如何解决这个崩溃问题:
我的操作是:-[_UIFlowLayoutSection center]: 未识别的选择器发送到实例。
UICollectionViewFlowLayout *collectionLayout = [[UICollectionViewFlowLayout alloc] init];
collectionLayout.minimumInteritemSpacing = 0.0;
collectionLayout.minimumLineSpacing = 0.0;
collectionLayout.sectionInset = UIEdgeInsetsMake(0.0,0.0,0.0,0.0);
[collectionLayout setScrollDirection:UICollectionViewScrollDirectionHorizontal];
[_collectionView setCollectionViewLayout:collectionLayout];