堆栈视图使用内在内容大小，因此使用布局约束来定义视图的尺寸。

有一种简单的方法可以快速添加约束（例子）：

  [view1.heightAnchor constraintEqualToConstant：100] .active = true; 
 

完整代码：

   - （void）setup {

 //查看1 
 UIView * view1 = [[UIView alloc] init]; 
 view1.backgroundColor = [UIColor blueColor]; 
 [view1.heightAnchor constraintEqualToConstant：100] .active = true; 
 [view1.widthAnchor constraintEqualToConstant：120] .active = true; 


 //查看2 
 UIView * view2 = [[UIView alloc] init]; 
 view2.backgroundColor = [UIColor greenColor]; 
 [view2.heightAnchor constraintEqualToConstant：100] .active = true; 
 [view2.widthAnchor constraintEqualToConstant：70] .active = true; 

 //查看3 
 UIView * view3 = [[UIView alloc] init]; 
 view3.backgroundColor = [UIColor magentaColor]; 
 [view3.heightAnchor constraintEqualToConstant：100] .active = true; 
 [view3.widthAnchor constraintEqualToConstant：180] .active = true; 

 //堆栈视图
 UIStackView * stackView = [[UIStackView alloc] init]; 

 stackView.axis = UILayoutConstraintAxisVertical; 
 stackView.distribution = UIStackViewDistributionEqualSpacing; 
 stackView.alignment = UIStackViewAlignmentCenter; 
 stackView.spacing = 30; 


 [stackView addArrangedSubview：view1]; 
 [stackView addArrangedSubview：view2]; 
 [stackView addArrangedSubview：view3]; 

 stackView.translatesAutoresizingMaskIntoConstraints = false; 
 [self.view addSubview：stackView]; 


 // Stack View的布局
 [stackView.centerXAnchor constraintEqualToAnchor：self.view.centerXAnchor] .active = true; 
 [stackView.centerYAnchor constraintEqualToAnchor：self.view.centerYAnchor] .active = true; 
} 
 

注意：这是在iOS 9上测试过的/ p>

I'm trying to add views in UIStackView programmatically. For now My code is:

UIView *view1 = [[UIView alloc]init];
view1.backgroundColor = [UIColor blackColor];
[view1 setFrame:CGRectMake(0, 0, 100, 100)];

UIView *view2 =  [[UIView alloc]init];
view2.backgroundColor = [UIColor greenColor];
[view2 setFrame:CGRectMake(0, 100, 100, 100)];

[self.stack1 addArrangedSubview:view1];
[self.stack1 addArrangedSubview:view2];

When i deploy the app, there is only 1 view and it is with black colour.(view1 get the parameters for view2 too)

Stack views use intrinsic content size, so use layout constraints to define the dimensions of the views.

There is an easy way to add constraints quickly (example):

[view1.heightAnchor constraintEqualToConstant:100].active = true;

Complete Code:

- (void) setup {

    //View 1
    UIView *view1 = [[UIView alloc] init];
    view1.backgroundColor = [UIColor blueColor];
    [view1.heightAnchor constraintEqualToConstant:100].active = true;
    [view1.widthAnchor constraintEqualToConstant:120].active = true;


    //View 2
    UIView *view2 = [[UIView alloc] init];
    view2.backgroundColor = [UIColor greenColor];
    [view2.heightAnchor constraintEqualToConstant:100].active = true;
    [view2.widthAnchor constraintEqualToConstant:70].active = true;

    //View 3
    UIView *view3 = [[UIView alloc] init];
    view3.backgroundColor = [UIColor magentaColor];
    [view3.heightAnchor constraintEqualToConstant:100].active = true;
    [view3.widthAnchor constraintEqualToConstant:180].active = true;

    //Stack View
    UIStackView *stackView = [[UIStackView alloc] init];

    stackView.axis = UILayoutConstraintAxisVertical;
    stackView.distribution = UIStackViewDistributionEqualSpacing;
    stackView.alignment = UIStackViewAlignmentCenter;
    stackView.spacing = 30;


    [stackView addArrangedSubview:view1];
    [stackView addArrangedSubview:view2];
    [stackView addArrangedSubview:view3];

    stackView.translatesAutoresizingMaskIntoConstraints = false;
    [self.view addSubview:stackView];


    //Layout for Stack View
    [stackView.centerXAnchor constraintEqualToAnchor:self.view.centerXAnchor].active = true;
    [stackView.centerYAnchor constraintEqualToAnchor:self.view.centerYAnchor].active = true;
}

Note: This was tested on iOS 9