Collectionview单选

Question

我想让用户只选择一个小区＆amp;数据将基于此反映出来。 （因此，一次只能选择一个单元格。）但是如果我用多个手指快速点击，我可以在特定时间选择多个单元格。

我已经使用didSelectItemAtIndexPath＆amp; didDeselectItemAtIndexPath也是{但是在那种情况下我无法选择。

任何人都可以为此功能提供帮助吗？

以下是我使用的示例代码： -

    [CustomCollection setShowsHorizontalScrollIndicator:NO];
    [CustomCollection setBounces:NO];
    [CustomCollection setAllowsMultipleSelection:NO];
    [CustomCollection setMultipleTouchEnabled:NO];

-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *identifier = @"TheCustomCell";

       CustomCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:identifier forIndexPath:indexPath];

        if (previousIndexPath.row == indexPath.row) {
    // Code for Selecttion
        [cell.tickImgView setImage:[UIImage imageNamed:@"Select_tick"]];

    }
     else{
        [cell.tickImgView setImage:[UIImage imageNamed:@"Deselect_tick"]];

}


}


-(void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath
{
    dispatch_async(dispatch_get_main_queue(), ^{
        previousIndexPath = indexPath;
        [CustomCollection reloadData];
    });  
}

Answer 1

以下是我的工作代码。

我在.h中声明了previousIndexPath 以下

@property (nonatomic, strong) NSIndexPath *previousIndexPath;

现在在.m文件

-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *identifier = @"TheCustomCell";

    CustomCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:identifier forIndexPath:indexPath];

    if ([self.previousIndexPath isEqual:indexPath]) {
        // Code for Selecttion
        [cell.tickImgView setImage:[UIImage imageNamed:@"Select_tick"]];

    }
    else{
        //Code for deselect
        [cell.tickImgView setImage:[UIImage imageNamed:@"Deselect_tick"]];

    }
    return cell;

}


-(void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath
{
    //reload collectionview data only if its not selected already 
    if (![self.previousIndexPath isEqual:indexPath])
    {
        self.previousIndexPath = indexPath;
        [collectionView reloadData];

    }

}

我使用isEqual:方法而不是indexPath.row和==运算符直接比较了indexpath。

Answer 2

最后，我找到了解决方案。

我刚刚制作了自己的自定义didDeselect方法＆amp;处理cellForItemAtIndexPath。