【reference】http://www.jianshu.com/p/31d07bf32d62
iOS 9之后: 示例如下
效果
@property (nonatomic, strong) UICollectionView *xtCollectionView;@property (nonatomic, strong) UICollectionViewFlowLayout *flowLayout; @property (nonatomic, strong) CALayer *dotLayer; @property (nonatomic, assign) CGFloat endPoint_x; @property (nonatomic, assign) CGFloat endPoint_y; @property (nonatomic, strong) UIBezierPath *path; @property (nonatomic, strong) NSMutableArray *array; @property (nonatomic, strong) UILongPressGestureRecognizer *longPress;
初始化一个数组
self.array = [NSMutableArray arrayWithObjects:@"红包", @"转账", @"手机充值", @"芝麻信用", @"天猫", @"生活缴费", @"蚂蚁呗", @"世界那么大", @"余额宝", @"安全快付", @"蚂蚁聚宝", @"哈哈",@"红包1", @"转账1", @"手机充值1", @"芝麻信用1", @"天猫1", @"生活缴费1", @"蚂蚁呗1", @"世界那么大1", @"余额宝1", @"安全快付1", @"蚂蚁聚宝1", @"哈哈1", nil];
创建CollectionView
- (UICollectionView *)xtCollectionView{ if (!_xtCollectionView) { _flowLayout = [[UICollectionViewFlowLayout alloc] init]; _flowLayout.minimumLineSpacing = 1; _flowLayout.minimumInteritemSpacing = 1; _xtCollectionView = [[UICollectionView alloc] initWithFrame:CGRectMake(0, 20, Screen_Width, Screen_Height - 20) collectionViewLayout:_flowLayout]; _xtCollectionView.dataSource = self; _xtCollectionView.backgroundColor = [UIColor colorWithRed:0.8568 green:0.8568 blue:0.8568 alpha:1.0]; _xtCollectionView.delegate = self; [_xtCollectionView registerClass:[XTCollectCell class] forCellWithReuseIdentifier:@"cellIdentiifer"]; } return _xtCollectionView; } 添加一个长按的手势
_longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(lonePressMoving:)];[self.xtCollectionView addGestureRecognizer:_longPress];
手势方法的实现
- (void)lonePressMoving:(UILongPressGestureRecognizer *)longPress{ switch (_longPress.state) { case UIGestureRecognizerStateBegan: { { NSIndexPath *selectIndexPath = [self.xtCollectionView indexPathForItemAtPoint:[_longPress locationInView:self.xtCollectionView]]; // 找到当前的cell XTCollectCell *cell = (XTCollectCell *)[self.xtCollectionView cellForItemAtIndexPath:selectIndexPath]; // 定义cell的时候btn是隐藏的, 在这里设置为NO [cell.btnDelete setHidden:NO]; [_xtCollectionView beginInteractiveMovementForItemAtIndexPath:selectIndexPath]; } break; } case UIGestureRecognizerStateChanged: { [self.xtCollectionView updateInteractiveMovementTargetPosition:[longPress locationInView:_longPress.view]]; break; } case UIGestureRecognizerStateEnded: { [self.xtCollectionView endInteractiveMovement]; break; } default: [self.xtCollectionView cancelInteractiveMovement]; break; } } 移动方法
- (void)collectionView:(UICollectionView *)collectionView moveItemAtIndexPath:(nonnull NSIndexPath *)sourceIndexPath toIndexPath:(nonnull NSIndexPath *)destinationIndexPath{ NSIndexPath *selectIndexPath = [self.xtCollectionView indexPathForItemAtPoint:[_longPress locationInView:self.xtCollectionView]]; // 找到当前的cell XTCollectCell *cell = (XTCollectCell *)[self.xtCollectionView cellForItemAtIndexPath:selectIndexPath]; [cell.btnDelete setHidden:YES]; [self.array exchangeObjectAtIndex:sourceIndexPath.item withObjectAtIndex:destinationIndexPath.item]; [self.xtCollectionView reloadData]; } 效果图的解释: collectionView的可编辑状态是"假的", 只是对数据进行了处理
你可能想知道动画的实现可以看我的另一篇博客iOS9之前可以参照这个
效果
感谢作者
补充说明: LXReorderableCollectionViewFlowLayout 这个继承于UICollectionViewFlowLayout So 对于cell的调整是比较随意像系统的一样.
比如调整cell的间距你可以这样.
调整---cell间距
LXReorderableCollectionViewFlowLayout *flowLayout = [[LXReorderableCollectionViewFlowLayout alloc] init]; flowLayout.minimumLineSpacing = ...; flowLayout.minimumInteritemSpacing = ...; _collection = [[UICollectionView alloc] initWithFrame:CGRectMake(0, 0, s_w, s_h) collectionViewLayout:flowLayout];
搭配下面这个方法
- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath{ return CGSizeMake(..., ...); }
文／夏天然后（简书作者） 原文链接：http://www.jianshu.com/p/31d07bf32d62 著作权归作者所有，转载请联系作者获得授权，并标注“简书作者”。