Swift,如何动态添加X个带约束的视图

UIStackView 希望

let sv = UIStackView()
sv.spacing = 10
// this means each arranged subview will take up the same amount of space
sv.distribution = .fillEqually 

for _ in 0..<50 { 
    // omitting the rounded corners or any other styling because
    // it's not the point of this question
    let subview = UIView()
    // The stack view will determine the width based on the screen size
    // we just need to say that height == width
    subview.widthAnchor.constraint(equalTo: subview.heightAnchor).isActive = true
    sv.addArrangedSubview(subview)
}

// add your stackview to your view hierarchy and constrain it