iphone - iOS - 当设置为 0 时 UICollectionView 间距仍然存在 - 如何设置单元格之间没有间距

Question

我有一个简单的 UICollectionView，我在 InterfaceBuilder 中设置了 0 间距，但是当我用单元格填充 Collection View 时，仍然有一些间距。除了将其设置为 0 间距之外，为了实际看到间距为 0 的 collectionview 单元格，我还需要做一些特殊且不是很明显的事情吗？谢谢。

编辑*一些代码:

- (UICollectionViewCell *)collectionView:(UICollectionView *)cv cellForItemAtIndexPath:(NSIndexPath *)indexPath {

    UICollectionViewCell *cell = [cv dequeueReusableCellWithReuseIdentifier:@"Cell" forIndexPath:indexPath];

    cell.backgroundColor = [UIColor clearColor];

    UILabel *lbl = [[UILabel alloc] initWithFrame:CGRectMake(2, 2, cell.frame.size.width -4, cell.frame.size.height -4)];
    lbl.backgroundColor = [UIColor clearColor];
    lbl.font = [UIFont boldSystemFontOfSize:20];
    lbl.text = [NSString stringWithFormat:@"$%0.0f", [[amountsArray objectAtIndex:indexPath.row] floatValue]];
    lbl.textAlignment = NSTextAlignmentCenter;
    lbl.layer.borderWidth = 1;

    [cell addSubview:lbl];
    [lbl release];

    return cell;
}

Answer 1

针对您的查询的简单解决方案。将此添加到您的 viewController 的 .m 文件中:

-(void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath
{
    ProductDetailViewController *HomeVC = [self.storyboard instantiateViewControllerWithIdentifier:@"ProductDetailView"];
    HomeVC.title = @"DemoProject";
    [self.navigationController pushViewController:HomeVC animated:YES];
}

- (UIEdgeInsets)collectionView:(UICollectionView*)collectionView layout:(UICollectionViewLayout *)collectionViewLayout insetForSectionAtIndex:(NSInteger)section {
    return UIEdgeInsetsMake(0, 0, 0, 0); // top, left, bottom, right
}

- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout minimumInteritemSpacingForSectionAtIndex:(NSInteger)section {

    return 0.0;
}

- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout minimumLineSpacingForSectionAtIndex:(NSInteger)section {
    return 0.0;
}