很多时候,我们都需要在项目中添加长按手势,比如UICollectionView中,我们长按对某一个item进行删除,那么这时,我们就需要在集合试图中添加长按的手势,手势的添加是简单的,但是添加过手势之后,我们怎么区分我们长按选中的是哪一个item呢
首先,我们先来看看我们是如何添加长按手势的
1.创建集合试图,这个就比较简单了.创建完集合试图,我们在集合试图上面添加长按的手势
UIGestureRecognizerDelegate 先遵从协议
longPressGr = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressToDo:)]; longPressGr.minimumPressDuration = 1.0; longPressGr.delegate = self; longPressGr.delaysTouchesBegan = YES; [_myCollectionView addGestureRecognizer:longPressGr];
2.我们在longpressToDo里面添加方法
-(void)longPressToDo:(UILongPressGestureRecognizer *)gestureRecognizer { if (gestureRecognizer.state != UIGestureRecognizerStateEnded) { return; } CGPoint p = [gestureRecognizer locationInView:self.collectionView]; NSIndexPath *indexPath = [self.collectionView indexPathForItemAtPoint:p]; if (indexPath == nil){ NSLog(@"couldn‘t find index path"); } else { // get the cell at indexPath (the one you long pressed) UICollectionViewCell* cell = [self.collectionView cellForItemAtIndexPath:indexPath]; // do stuff with the cell } }
在else里面我们根据indexpath对不同的item进行区分,这样是不是很简单
UICollectionView添加长按手势,长按选中某一个item
原文：http://www.cnblogs.com/nsjelly/p/4629584.html