UICollectionViewController编辑

Question

我可以使用self.navigationItem.leftBarButtonItem = self.editButtonItem;按导航面板上的编辑按钮，使UITableViewController处于可编辑状态。

如何使这种行为为UICollectionViewController？

Answer 1

解决方案：在编辑按钮触摸

我添加的按钮与删除图像提供给细胞， 然后在cellForItemAtIndexPath:

... 
if (self.editing) { 
    cell.deleteButton.hidden = NO; 
}else cell.deleteButton.hidden = YES; 
... 

刷新数据：

- (void)setEditing:(BOOL)editing animated:(BOOL)animated { 
    [super setEditing:editing animated:animated]; 
    _fetchedResultsController = nil; 
    [self.collectionView reloadData]; 
} 

按钮触发删除方法：

- (IBAction)deleteTour:(UIButton *)sender{ 
    NSIndexPath *indexPath = nil; 
    indexPath = [self.collectionView indexPathForItemAtPoint:[self.collectionView convertPoint:sender.center fromView:sender.superview]]; 
}