iOS：带有滚动错误的Collectionview

Question

我有一个CollectionView，这是我的主菜单。它工作得很好，但现在，我在菜单上有更多行，用户可以滚动它。

单元格包含一个图像，表示选项图标和一个包含菜单标题的标签。

在用户滚动或转到菜单并再次返回后，我的收藏视图的单元格会被弄乱＆＃34;第一行，到最后一行，比，我再次滚动，标签消失......好吧，真的很混乱。

我在StackOverflow上看到了问题并尝试了它的每个解决方案。比如，使用[cell setNeedsDisplay]或在我的CustomCell.h上实现方法setFrame，但有时滚动后单元格仍然在乱码。

我的代码：

- (NSInteger)collectionView:(UICollectionView *)view numberOfItemsInSection:(NSInteger)section {
    return 2;
}
// 2
- (NSInteger)numberOfSectionsInCollectionView: (UICollectionView *)collectionView {
    return 6;
}
// 3
- (UICollectionViewCell *)collectionView:(UICollectionView *)cv cellForItemAtIndexPath:(NSIndexPath  *)indexPath {
    static NSString *identifier = @"MenuOptionCell";

    MyCustomCell *cell = [self.menu dequeueReusableCellWithReuseIdentifier:identifier forIndexPath:indexPath];

    UIImageView *img = (UIImageView*) [cell viewWithTag:100];
    UILabel *lbl = (UILabel*) [cell viewWithTag:90];


    UIView *seperatorView = [[UIView alloc] initWithFrame:CGRectMake(10, cell.frame.size.height-5, cell.frame.size.width-20, 1)];
    seperatorView.backgroundColor = [UIColor colorWithRed:26.0/255.0 green:100.0/255.0 blue:119.0/255.0 alpha:1.0];
    [cell.contentView addSubview:seperatorView];



    UIView *seperatorView2 = [[UIView alloc] init];

    NSInteger nsint = idxCollection;
    if(idxCollection == 0)
        seperatorView2 = [[UIView alloc] initWithFrame:CGRectMake(cell.frame.size.width-1, 10, 1, cell.frame.size.height)];
    else{
        NSLog(@"%ld", (nsint % 2));
        if((nsint % 2) == 0){
            if(idxCollection != 8)
                seperatorView2 = [[UIView alloc] initWithFrame:CGRectMake(cell.frame.size.width-1, 0, 1, cell.frame.size.height)];
            else
                seperatorView2 = [[UIView alloc] initWithFrame:CGRectMake(cell.frame.size.width-1, 0, 1, cell.frame.size.height-10)];
        }
    }

    seperatorView2.backgroundColor = [UIColor colorWithRed:26.0/255.0 green:100.0/255.0 blue:119.0/255.0 alpha:1.0];
    [cell.contentView addSubview:seperatorView2];

    switch (idxCollection) {
        case 0:
            lbl.text = @"FIRST MENU";
            img.image = [UIImage imageNamed:@"first_image.png"];
            [img setFrame:CGRectMake(0,0,20,20)];
            img.contentMode = UIViewContentModeScaleAspectFit;
            break;
        case 1:
            lbl.text = @"SECOND MENU";
            img.image = [UIImage imageNamed:@"second_image.png"];
            [img setFrame:CGRectMake(0,0,20,20)];
            img.contentMode = UIViewContentModeScaleAspectFit;
            break;
        case 2:
            lbl.text = @"THIRD MENU";
            img.image = [UIImage imageNamed:@"third_image.png"];
            [img setFrame:CGRectMake(0,0,20,20)];
            img.contentMode = UIViewContentModeScaleAspectFit;
            break;

        case 3:
            lbl.text = @"FOURTH MENU";
            img.image = [UIImage imageNamed:@"fourth_image.png"];
            [img setFrame:CGRectMake(0,0,20,20)];
            img.contentMode = UIViewContentModeScaleAspectFit;
            break;

        case 4:
            lbl.text = @"FIFTH MENU";
            img.image = [UIImage imageNamed:@"fifth_image.png"];
            [img setFrame:CGRectMake(0,0,20,20)];
            img.contentMode = UIViewContentModeScaleAspectFit;
            break;

        case 5:
            lbl.text = @"SIXTH MENU";
            img.image = [UIImage imageNamed:@"sixth_image.png"];
            [img setFrame:CGRectMake(0,0,20,20)];
            img.contentMode = UIViewContentModeScaleAspectFit;
            break;

        case 6:
            lbl.text = @"SEVENTH MENU";
            img.image = [UIImage imageNamed:@"seventh_image.png"];
            [img setFrame:CGRectMake(0,0,20,20)];
            img.contentMode = UIViewContentModeScaleAspectFit;
            break;

        case 7:
            lbl.text = @"EIGHTH MENU";
            img.image = [UIImage imageNamed:@"eigthth_image.png"];
            [img setFrame:CGRectMake(0,0,20,20)];
            img.contentMode = UIViewContentModeScaleAspectFit;
            break;

        case 8:
            lbl.text = @"NINTH MENU";
            img.image = [UIImage imageNamed:@"ninth_image.png"];
            [img setFrame:CGRectMake(0,0,20,20)];
            img.contentMode = UIViewContentModeScaleAspectFit;
            break;

        case 9:
            lbl.text = @"TENTH MENU";
            [lbl setFont:[UIFont fontWithName:@"Helvetica" size:10.0f]];
            img.image = [UIImage imageNamed:@"tenth_image.png"];
            [img setFrame:CGRectMake(0,0,20,20)];
            img.contentMode = UIViewContentModeScaleAspectFit;
            break;

        case 10:
            lbl.text = @"ELEVENTH MENU";
            img.image = [UIImage imageNamed:@"eleventh_image.png"];
            [img setFrame:CGRectMake(0,0,20,20)];
            img.contentMode = UIViewContentModeScaleAspectFit;
            break;

        case 11:
            lbl.text = @"TWELFTH MENU";
            img.image = [UIImage imageNamed:@"twelfth_image.png"];
            [img setFrame:CGRectMake(0,0,20,20)];
            img.contentMode = UIViewContentModeScaleAspectFit;
            break;

        default:
            break;
    }

    idxCollection++;
    [cell setNeedsDisplay];

    return cell;
}