swift - 如何在 swift 中向 uicollectionview 添加复选框

Question

不久前已经有人问过这个问题并给出了一些答案，但我并没有真正理解其中的任何一个。所以我想知道是否有人可以编写一个易于理解的教程，介绍如何执行下图所示的操作:

http://i.imgur.com/BzIBOkH.jpg?1

如果有人能准确分享如何做到这一点，我将非常感激，因为它看起来真的很酷，我很乐意在我的应用程序中使用类似的东西

Answer 1

Here是可用于复选框单元的示例项目。 (目标 - c)

MyCell.m

// A setter method for checked property
- (void)setChecked:(BOOL)checked {
    // Save property value
    _checked = checked;

    // Update checkbox image
    if(checked) {
        self.checkBoxImageView.image = [UIImage imageNamed:@"Checked"];
    } else {
        self.checkBoxImageView.image = [UIImage imageNamed:@"Unchecked"];
    }
}

您的收藏 View 单元格

- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath {
    // Deselect cell first
    [collectionView deselectItemAtIndexPath:indexPath animated:YES];

    // Get selected cell
    MYCell* cell = (MYCell*) [collectionView cellForItemAtIndexPath:indexPath];

    // Check if set contains selected cell indexPath
    if([self.checkedIndexPaths member:indexPath])
    {
        // User tapped on checked cell
        // Remove selected indexPath from set
        [self.checkedIndexPaths removeObject:indexPath];

        // Uncheck checkbox on cell
        cell.checked = NO;
    }
    else // User tapped on unchecked cell
    {
        // Add selected indexPath to set
        [self.checkedIndexPaths addObject:indexPath];

        // Check checkbox on cell
        cell.checked = YES;
    }
}