Xcode 视图重叠但不堆叠

我对编程相当陌生

屏幕有两个垂直列和3个框。如果右栏中的框比左栏中的框少，则框将转到左栏。每个框都有几个子视图。 在我的代码中，“yearBOX”和“dayBOX”将位于左栏。问题是“dayBOX”只是重叠在年份框上，而不是堆叠在下面。我已经检查了文件，玩了大约10个小时，但找不到任何解决方案。欢迎使用Swift或Objective-C代码。我试图设置TopAnchord，但没有成功。非常感谢

下面是完整的代码：

已编辑：删除了一些未使用的行。并添加了一些关键代码来解决问题

[boxStack.topAnchor constraintEqualToAnchor:dayBox.topAnchor].active=YES； [dayBox.bottomAnchor constraintEqualToAnchor:boxStack.bottomAnchor].active=YES； [boxStack.topAnchor constraintEqualToAnchor:dayBox.topAnchor].active=YES； [dayBox.bottomAnchor constraintEqualToAnchor:boxStack.bottomAnchor].active=YES

- (void)viewDidLoad {
CGRect watchersRect = CGRectMake(0, 20, 320, 460);
UIView *colorLayer = [[UIView alloc]initWithFrame:watchersRect];
colorLayer.backgroundColor = [UIColor grayColor];

[self.view addSubview:colorLayer];


UIStackView *watchersUI = [[UIStackView alloc]init];
    NSMutableArray *leftArr=[[NSMutableArray alloc]init];
NSMutableArray *rightArr=[[NSMutableArray alloc]init];

NSMutableArray *yearStackUIArr = [[NSMutableArray alloc]initWithObjects:@"year 1", @"year2",@"year3",@"year4",@"year5",nil];
NSMutableArray *monthStackUIArr = [[NSMutableArray alloc]initWithObjects:@"month 1", @"month 2",@"month 3",nil];
NSMutableArray *dayStackUIArr = [[NSMutableArray alloc]initWithObjects:@"day1", @"day2",@"day3",nil];



watchersUI = [[UIStackView alloc] initWithFrame:watchersRect];
watchersUI.axis= UILayoutConstraintAxisHorizontal;
watchersUI.distribution = UIStackViewDistributionFillEqually;
watchersUI.alignment = UIStackViewAlignmentFill;
watchersUI.spacing = 2;
watchersUI.translatesAutoresizingMaskIntoConstraints = YES;

[colorLayer addSubview:watchersUI];


UIView *leftColumn = [[UIView alloc] init];
[leftColumn setBackgroundColor:[UIColor yellowColor]];

UIView *rightColumn = [[UIView alloc]init];
[rightColumn setBackgroundColor:[UIColor redColor]];


[watchersUI addArrangedSubview:leftColumn];
[watchersUI addArrangedSubview:rightColumn];

[leftColumn.leftAnchor constraintEqualToAnchor:watchersUI.leftAnchor].active = YES;
[rightColumn.rightAnchor constraintEqualToAnchor:watchersUI.rightAnchor].active = YES;
[leftColumn.bottomAnchor constraintEqualToAnchor:watchersUI.bottomAnchor].active = YES;
[rightColumn.bottomAnchor constraintEqualToAnchor:watchersUI.bottomAnchor].active = YES;


UIStackView *leftStack =[[UIStackView alloc]init];
leftStack.axis = UILayoutConstraintAxisVertical;
leftStack.distribution = UIStackViewDistributionFillProportionally;
leftStack.alignment=UIStackViewAlignmentLeading;
leftStack.spacing =2;
leftStack.translatesAutoresizingMaskIntoConstraints = NO;
[leftColumn addSubview:leftStack];
[leftStack.leftAnchor constraintEqualToAnchor:leftColumn.leftAnchor].active =YES;
[leftStack.rightAnchor constraintEqualToAnchor:leftColumn.rightAnchor].active =YES;


UIStackView *rightStack =[[UIStackView alloc]init];
rightStack.axis = UILayoutConstraintAxisVertical;
rightStack.distribution = UIStackViewDistributionFillProportionally;
rightStack.alignment=UIStackViewAlignmentLeading;
rightStack.spacing =2;
rightStack.translatesAutoresizingMaskIntoConstraints = NO;
[rightColumn addSubview:rightStack];
[rightStack.leftAnchor constraintEqualToAnchor:rightColumn.leftAnchor].active =YES;
[rightStack.rightAnchor constraintEqualToAnchor:rightColumn.rightAnchor].active =YES;


UIView *monthBox=[[UIView alloc]init];
monthBox.backgroundColor =[UIColor blackColor];

UIView *yearBox=[[UIView alloc]init];
yearBox.backgroundColor = [UIColor purpleColor];

UIView *dayBox=[[UIView alloc]init];
dayBox.backgroundColor =[UIColor brownColor];


if ([yearStackUIArr count]>0) {

    if ([rightArr count]<[leftArr count]) {

        [rightStack addArrangedSubview:yearBox];
        [rightArr addObject:yearBox];

        [yearBox.topAnchor constraintEqualToAnchor:rightColumn.topAnchor].active = YES;
        [yearBox.leftAnchor constraintEqualToAnchor:rightColumn.leftAnchor].active = YES;
        [yearBox.rightAnchor constraintEqualToAnchor:rightColumn.rightAnchor].active = YES;



    }
    else
    {
        [leftStack addArrangedSubview:yearBox];
        [leftArr addObject:yearBox];

        for (UIView *subs in leftStack.subviews) {
            NSLog(@"yearBox leftStack %@",subs);
        }


        [yearBox.topAnchor constraintEqualToAnchor:leftColumn.topAnchor].active = YES;
        [yearBox.leftAnchor constraintEqualToAnchor:leftColumn.leftAnchor].active = YES;
        [yearBox.rightAnchor constraintEqualToAnchor:leftColumn.rightAnchor].active = YES;


    }


    UIStackView *boxStack = [[UIStackView alloc]init];
    boxStack.axis = UILayoutConstraintAxisVertical;
    boxStack.distribution = UIStackViewDistributionFillEqually;
    boxStack.alignment=UIStackViewAlignmentLeading;
    boxStack.spacing=1;
    boxStack.translatesAutoresizingMaskIntoConstraints = NO;


    for (NSString *innerItem in yearStackUIArr) {
        UILabel *innerView = [[UILabel alloc]init];
        [boxStack addArrangedSubview:innerView];

        [innerView.leftAnchor constraintEqualToAnchor:boxStack.leftAnchor].active =YES;
        [innerView.rightAnchor constraintEqualToAnchor:boxStack.rightAnchor].active =YES;
        [innerView.heightAnchor constraintGreaterThanOrEqualToConstant:20].active =YES;
        innerView.backgroundColor =[UIColor cyanColor];
        innerView.text = innerItem;
        innerView.font = [UIFont systemFontOfSize:10];


    }

    [yearBox addSubview:boxStack];
    [boxStack.leftAnchor constraintEqualToAnchor:yearBox.leftAnchor].active = YES;
    [boxStack.rightAnchor constraintEqualToAnchor:yearBox.rightAnchor].active = YES;
    [boxStack.topAnchor constraintEqualToAnchor:yearBox.topAnchor].active = YES;
    [yearBox.bottomAnchor constraintEqualToAnchor:boxStack.bottomAnchor].active = YES;


}



if ([monthStackUIArr count]>0) {

    if ([rightArr count]<[leftArr count]) {
        [rightStack addArrangedSubview:monthBox];
        [rightArr addObject:monthBox];


        [monthBox.leftAnchor constraintEqualToAnchor:rightColumn.leftAnchor].active = YES;
        [monthBox.rightAnchor constraintEqualToAnchor:rightColumn.rightAnchor].active = YES;

    }
    else
    {
        [leftStack addArrangedSubview:monthBox];
        [leftArr addObject:monthBox];


        [monthBox.leftAnchor constraintEqualToAnchor:leftColumn.leftAnchor].active = YES;
        [monthBox.rightAnchor constraintEqualToAnchor:leftColumn.rightAnchor].active = YES;
    }


    UIStackView *boxStack = [[UIStackView alloc]init];
    boxStack.axis = UILayoutConstraintAxisVertical;
    boxStack.distribution = UIStackViewDistributionFillEqually;
    boxStack.alignment=UIStackViewAlignmentLeading;
    boxStack.spacing=2;
    boxStack.translatesAutoresizingMaskIntoConstraints = NO;


    for (NSString *innerItem in monthStackUIArr) {
        UILabel *innerView = [[UILabel alloc]init];
        [boxStack addArrangedSubview:innerView];

        [innerView.leftAnchor constraintEqualToAnchor:boxStack.leftAnchor].active =YES;
        [innerView.rightAnchor constraintEqualToAnchor:boxStack.rightAnchor].active =YES;
        [innerView.heightAnchor constraintGreaterThanOrEqualToConstant:20].active =YES;
        innerView.backgroundColor =[UIColor whiteColor];
        innerView.text = innerItem;
        innerView.font = [UIFont systemFontOfSize:10];

    }

    [monthBox addSubview:boxStack];
    [boxStack.leftAnchor constraintEqualToAnchor:monthBox.leftAnchor].active = YES;
    [boxStack.rightAnchor constraintEqualToAnchor:monthBox.rightAnchor].active = YES;
    [boxStack.topAnchor constraintEqualToAnchor:monthBox.topAnchor].active=YES;
    [monthBox.bottomAnchor constraintEqualToAnchor:boxStack.bottomAnchor].active = YES;


}

if ([dayStackUIArr count]>0) {

    if ([rightArr count]<[leftArr count]) {

        [rightStack addArrangedSubview:dayBox];
        [rightArr addObject:dayBox];


        [dayBox.leftAnchor constraintEqualToAnchor:rightColumn.leftAnchor].active = YES;
        [dayBox.rightAnchor constraintEqualToAnchor:rightColumn.rightAnchor].active = YES;




    }
    else
    {
        [leftStack addArrangedSubview:dayBox];

        [leftArr addObject:dayBox];

        [dayBox.leftAnchor constraintEqualToAnchor:leftColumn.leftAnchor].active = YES;
        [dayBox.rightAnchor constraintEqualToAnchor:leftColumn.rightAnchor].active = YES;


    }

    UIStackView *boxStack = [[UIStackView alloc]init];
    boxStack.axis = UILayoutConstraintAxisVertical;
    boxStack.distribution = UIStackViewDistributionFillEqually;
    boxStack.alignment=UIStackViewAlignmentLeading;
    boxStack.spacing=2;
    boxStack.translatesAutoresizingMaskIntoConstraints = NO;


    [dayBox addSubview:boxStack];


    for (NSString *innerItem in dayStackUIArr) {
        UILabel *innerView = [[UILabel alloc]init];
        [boxStack addArrangedSubview:innerView];

        [innerView.leftAnchor  constraintEqualToAnchor:boxStack.leftAnchor].active =YES;
        [innerView.rightAnchor constraintEqualToAnchor:boxStack.rightAnchor].active =YES;
        [innerView.heightAnchor constraintGreaterThanOrEqualToConstant:20].active =YES;
        innerView.backgroundColor =[UIColor blueColor];
        innerView.text = innerItem;
        innerView.font = [UIFont systemFontOfSize:10];

    }

    [boxStack.leftAnchor constraintEqualToAnchor:dayBox.leftAnchor].active = YES;
    [boxStack.rightAnchor constraintEqualToAnchor:dayBox.rightAnchor].active = YES;
    [boxStack.topAnchor constraintEqualToAnchor:dayBox.topAnchor].active=YES;
    [dayBox.bottomAnchor constraintEqualToAnchor:boxStack.bottomAnchor].active = YES;



    }


   }

}

-（void）viewDidLoad{
CGRect watchersRect=CGRectMake（0,20,320,460）；
UIView*colorLayer=[[UIView alloc]initWithFrame:WatcherRect]；
colorLayer.backgroundColor=[UIColor grayColor]；
[self.view addSubview:colorLayer]；
UIStackView*watchersUI=[[UIStackView alloc]init]；
NSMUTABLEARRY*leftArr=[[NSMUTABLEARRY alloc]init]；
NSMutableArray*rightArr=[[NSMutableArray alloc]init]；
NSMutableArray*yearStackUIArr=[[NSMutableArray alloc]initWithObjects:@“第1年”、“第2年”、“第3年”、“第4年”、“第5年”、“无]；
NSMutableArray*monthStackUIArr=[[NSMutableArray alloc]initWithObjects:@“第1个月”、“第2个月”、“第3个月”、“无]；
NSMUTABLEARRY*dayStackUIArr=[[NSMUTABLEARRY alloc]initWithObjects:@“day1”，“day2”，“day3”，nil]；
watchersUI=[[UIStackView alloc]initWithFrame:watchersRect]；
watchersUI.axis=UILayoutConstraintAshorizontal；
watchersUI.distribution=UIStackViewDistributionAllegly；
watchersUI.alignment=UIStackViewAlignmentFill；
watchersUI.spating=2；
watchersUI.translatesAutoresizingMaskIntoConstraints=是；
[colorLayer addSubview:WatcherUI]；
UIView*leftColumn=[[UIView alloc]init]；
[leftColumn setBackgroundColor:[UIColor yellowColor]]；
UIView*rightColumn=[[UIView alloc]init]；
[rightColumn setBackgroundColor:[UIColor redColor]]；
[watchersUI addArrangedSubview:leftColumn]；
[watchersUI addArrangedSubview:rightColumn]；
[leftColumn.leftAnchor constraintEqualToAnchor:watchersUI.leftAnchor].active=YES；
[rightColumn.rightAnchor constraintEqualToAnchor:watchersUI.rightAnchor].active=YES；
[leftColumn.bottomAnchor constraintEqualToAnchor:watchersUI.bottomAnchor].active=YES；
[rightColumn.bottomAnchor constraintEqualToAnchor:watchersUI.bottomAnchor].active=YES；
UIStackView*leftStack=[[UIStackView alloc]init]；
leftStack.axis=UILayoutConstraintaxVertical；
leftStack.distribution=UIStackViewDistributionFill按比例分配；
leftStack.alignment=UIStackViewAlignmentLeading；
leftStack.spacing=2；
leftStack.TranslatesAutoResizezingMaskintoConstraints=否；
[leftColumn addSubview:leftStack]；
[leftStack.leftAnchor constraintEqualToAnchor:leftColumn.leftAnchor].active=YES；
[leftStack.rightAnchor constraintEqualToAnchor:leftColumn.rightAnchor].active=YES；
UIStackView*rightStack=[[UIStackView alloc]init]；
rightStack.axis=UILayoutConstraintaxVertical；
rightStack.distribution=UIStackViewDistributionFill按比例分配；
rightStack.alignment=UIStackViewAlignmentLeading；
rightStack.spacing=2；
rightStack.TranslatesAutoResizezingMaskintoConstraints=否；
[rightColumn添加子视图：rightStack]；
[rightStack.leftAnchor constraintEqualToAnchor:rightColumn.leftAnchor].active=YES；
[rightStack.rightAnchor constraintEqualToAnchor:rightColumn.rightAnchor].active=YES；
UIView*monthBox=[[UIView alloc]init]；
monthBox.backgroundColor=[UIColor blackColor]；
UIView*yearBox=[[UIView alloc]init]；
yearBox.backgroundColor=[UIColor purpleColor]；
UIView*dayBox=[[UIView alloc]init]；
dayBox.backgroundColor=[UIColor brownColor]；
如果（[yearStackUIArr count]>0）{
如果（[rightArr计数]0）{
如果（[rightArr计数]0）{
if（[rightArr count]这是一个很好的问题，正在尝试调试。嘿，你的部分问题是你遇到的自动布局约束错误。我刚刚解决了这个问题。但问题还不是核心问题。因此，在你的
if（[dayStackUIArr count]>0）
中，然后在你的
中，如果
中。更改
[dayBox.heightAnchor约束创建AnorEqualToAnchor:margin.heightAnchor].active=YES；
至
[dayBox.heightAnchor约束创建AnorEqualToAnchor:margin.heightAnchor].active=YES；
这将消除自动布局错误Shi Akshansh。感谢您指出这一点。我认为我需要设置“innerView.topAnchor”以使其正确。我不知道为什么，但我只是发现这些innerView不会粘贴或附加到其父StackView。我想这就是原因。我会在收到通知后再次更新代码解决问题。再次感谢你。威廉，我试图操纵代码，但似乎没有任何帮助。我会继续尝试。但是，如果你找到解决方案，请发布解决方案。我非常感兴趣，并会关注它。祝你好运！嗨，阿肯什。神奇的事情发生在我在年鉴框中添加了一个底部锚之后，它als是boxstack子视图。也是dayBox的uistackview boxstack子视图的topAnchor。看来这些Anchor对于自动布局至关重要。非常感谢。