第一步给cell添加长按方法
UILongPressGestureRecognizer *lgest = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longclick:)];
if (self.isedit) {
if ([model.isDefault isEqualToString:@"1"]) {//不能移动的
cell.Image_Icon.hidden =YES;
[cell removeGestureRecognizer:lgest];
}else
{
[cell addGestureRecognizer:lgest];
}
}else
{
[cell removeGestureRecognizer:lgest];
}
第二步触发的方法
-(void)longclick:(UIGestureRecognizer *)gar{
switch (gar.state) {
case UIGestureRecognizerStateBegan:
if([self.collectionView indexPathForItemAtPoint:[gar locationInView:self.collectionView]] == nil){
break;
}
[self.collectionView beginInteractiveMovementForItemAtIndexPath:[self.collectionView indexPathForItemAtPoint:[gar locationInView:self.collectionView]]];
break;
case UIGestureRecognizerStateChanged:
{
//固定某个Cell不能移动
NSIndexPath *indexPath = [self.collectionView indexPathForItemAtPoint:[gar locationInView:self.collectionView]];
MenuInfoModel *model =self.dataSource[indexPath.row];
if ([model.isDefault isEqualToString:@"1"]) {
return;
}
[self.collectionView updateInteractiveMovementTargetPosition:[gar locationInView:self.collectionView]];
}
break;
case UIGestureRecognizerStateEnded:
[self.collectionView endInteractiveMovement];
break;
default:
[self.collectionView cancelInteractiveMovement];
break;
}
}
//第三步：设定单位格可移动
-(BOOL)collectionView:(UICollectionView *)collectionView canMoveItemAtIndexPath:(NSIndexPath *)indexPath{
return YES;
}
//第四步：改变数据源顺序
-(void)collectionView:(UICollectionView *)collectionView moveItemAtIndexPath:(NSIndexPath *)sourceIndexPath toIndexPath:(NSIndexPath *)destinationIndexPath{
// FLmodel *model = [_dataSource objectAtIndex:sourceIndexPath.item];
MenuInfoModel *model =[self.dataSource objectAtIndex:sourceIndexPath.item];
[_dataSource removeObject:model];
[_dataSource insertObject:model atIndex:destinationIndexPath.item];
}
