在CollectionView中突出显示单元格

Question

我正在开发一款iOS应用程序，希望在CollectionView中的单元格被点击时能够高亮，类似于普通按钮的效果。我应该如何在didSelectItemAtIndexPath:(NSIndexPath *)indexPath方法中实现此功能？

- diogo.appDev

---

更改该单元格的背景颜色。 - user1673099

Answer 1

尝试类似于这样的方式：

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{
    .....
    if (cell.selected) {
        cell.backgroundColor = [UIColor colorWithRed:255/255.0 green:255/255.0 blue:153/255.0 alpha:1]; // highlight selection
    }
    else
    {
        cell.backgroundColor = [UIColor clearColor]; // Default color
    }
    return cell;
}

- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath{
    UICollectionViewCell* cell = [collectionView  cellForItemAtIndexPath:indexPath];
    cell.backgroundColor = [UIColor colorWithRed:255/255.0 green:255/255.0 blue:153/255.0 alpha:1]; //     //cell.lblImgTitle.text = @"xxx";
}

- (void)collectionView:(UICollectionView *)collectionView didDeselectItemAtIndexPath:(NSIndexPath *)indexPath{
    UICollectionViewCell* cell = [collectionView  cellForItemAtIndexPath:indexPath];
    cell.backgroundColor = [UIColor clearColor];
}

- Calin Chitu

---

我通过在didHighlightItemAtIndexPath和didUnhighlightItemAtIndexPath方法中更改单元格中图片的Alpha值来解决了这个问题。无论如何，我会将你的答案设置为正确答案。谢谢。 - diogo.appDev

为什么不在答案中发布您是如何解决问题的呢？这对其他人会很有帮助... Diogo-appdev - Narasimha Nallamsetty

Answer 2

如果您继承了cell类，请将以下代码放置在您的.m文件中。

- (void)setSelected:(BOOL)selected
{
    if(selected)
    {
        self.backgroundColor = [UIColor colorWithWhite:0.1 alpha:0.5];
    }
    else
    {
        self.backgroundColor = [UIColor whiteColor];
    }
}

- CyberMew

Answer 3

为什么无法通过CocoaPods更改背景颜色？我新建了一个自定义的collectionView单元格类。

   - (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath{
        CHSMenuControlCell *cell = (CHSMenuControlCell*)[collectionView  cellForItemAtIndexPath:indexPath];
        cell.backgroundColor = [UIColor colorWithRed:255/255.0 green:255/255.0 blue:153/255.0 alpha:1]; //     //cell.lblImgTitle.text = @"xxx";
    }

    - (void)collectionView:(UICollectionView *)collectionView didDeselectItemAtIndexPath:(NSIndexPath *)indexPath{
    CHSMenuControlCell *cell = (CHSMenuControlCell *)[collectionView  cellForItemAtIndexPath:indexPath];
    cell.backgroundColor = [UIColor clearColor];
}

- lily

Answer 4

试一下这个

cell.selectedBackgroundView.backgroundColor = [UIColor greenColor];

- Vaisakh