iOS UICollectionView 长按移动cell

ref：http://www.jianshu.com/p/31d07bf32d62

iOS 9以后: 示例以下

效果

前言: 看完你能够学到哪些呢? 就是文章标题那么多, 只有那么多. . 手残效果图没弄好.

@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", @"转帐", @"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", @"转帐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];

建立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能够看个人另外一篇博客iOS仿美团外卖饿了吗App点餐动画

iOS9以前能够参照这个

效果

Github上很早的项目了, 但愿对有须要的同窗有启发的做用, 点我下载感谢做者

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同样.
好比调整cell的间距你能够这样.

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(..., ...); }

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文／夏自然后（简书做者） 原文连接：http://www.jianshu.com/p/31d07bf32d62 著做权归做者全部，转载请联系做者得到受权，并标注“简书做者”。