我尝试将三个子视图添加到堆栈视图。但是我添加的只有最后一个可见。我尝试使用构造函数添加一些子视图，但也使用addArangedSubview(). 两种方式我得到相同的结果。看起来要么视图彼此重叠，要么被下一个添加的视图替换。我该如何解决这个问题并添加几个可见的子视图？
我有一个视图，我在其中创建堆栈视图和子视图，以及一个视图控制器，我在其中添加此视图。
看法：
import UIKit
class WhatToCookView: UIView {
var originalMealButton: CustomButtonXLView!
var predefinedMealButton: CustomButtonXLView!
var ourSuggestionsButton: CustomButtonXLView!
var stackView: UIStackView!
init() {
super.init(frame:CGRect.zero)
self.backgroundColor = .gray
let transpatent = UIColor.blue.cgColor
self.originalMealButton = CustomButtonXLView(bgColorStart: transpatent, bgColorEnd: transpatent, cornerRadius: 6, mainText: "Button1", subText: "Subtext", icon: UIImage(named: "cooker_2")!)
self.predefinedMealButton = CustomButtonXLView(bgColorStart: transpatent, bgColorEnd: transpatent, cornerRadius: 6, mainText: "Button2", subText: "Subtext", icon: UIImage(named: "cooker_2")!)
self.ourSuggestionsButton = CustomButtonXLView(bgColorStart: transpatent, bgColorEnd: transpatent, cornerRadius: 6, mainText: "Button3", subText: "Subtext", icon: UIImage(named: "cooker_2")!)
self.stackView = UIStackView(arrangedSubviews: [self.originalMealButton, self.ourSuggestionsButton, self.predefinedMealButton])
self.stackView.axis = .vertical
self.stackView.distribution = .fillEqually
self.stackView.alignment = .fill
self.stackView.spacing = 10
self.stackView.backgroundColor = .green
self.addSubview(self.stackView)
self.setupButtonConstraints()
// self.stackView.addArrangedSubview(self.originalMealButton)
// self.stackView.addArrangedSubview(self.predefinedMealButton)
// self.stackView.addArrangedSubview(self.ourSuggestionsButton)
return
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
private func setupButtonConstraints() {
self.stackView.translatesAutoresizingMaskIntoConstraints = false
self.stackView.heightAnchor.constraint(equalTo:self.heightAnchor).isActive = true
self.stackView.widthAnchor.constraint(equalTo:self.widthAnchor).isActive = true
self.originalMealButton.translatesAutoresizingMaskIntoConstraints = false
self.predefinedMealButton.translatesAutoresizingMaskIntoConstraints = false
self.ourSuggestionsButton.translatesAutoresizingMaskIntoConstraints = false
}
视图控制器：
import UIKit
class WhatToCookViewController: UIViewController {
var whatToCookView: WhatToCookView!
override func viewDidLoad() {
super.viewDidLoad()
self.whatToCookView = WhatToCookView()
view.addSubview(self.whatToCookView)
self.setupConstraints()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
private func setupConstraints() {
self.whatToCookView.translatesAutoresizingMaskIntoConstraints = false
self.whatToCookView.widthAnchor.constraint(equalTo: view.widthAnchor).isActive = true
self.whatToCookView.heightAnchor.constraint(equalTo:view.heightAnchor, multiplier:0.5).isActive = true
}
}
此外，如果我尝试不使用构造函数添加排列子视图，而是使用 addArrangedSubview()，则始终只有最后添加的子视图可见。结果是：
