我正在开发一个自定义控件,最终将成为一个按钮。我已经在界面生成器中成功构建了设计,但是当我尝试以编程方式构建相同的 View 时,它没有按预期工作。我试图通过在将标签连接到其 super View 的约束上设置常量来强制进行一些填充,但是,这并没有按预期工作。
顶部按钮是我所期望的(以及我在界面生成器中创建的按钮,请忽略字体差异)。底部就是我得到的。没有抛出错误/警告,但它没有调整 super View 的大小。
class RoundedButton3: UIView {
var stringLabel: UILabel
var numberLabel: UILabel
var leftBackground: UIView
var rightBackground: UIView
var stackView: UIStackView
override init(frame: CGRect) {
stringLabel = UILabel()
numberLabel = UILabel()
leftBackground = UIView()
rightBackground = UIView()
stackView = UIStackView()
super.init(frame: frame)
self.contentMode = .scaleToFill
self.autoresizingMask = [.flexibleBottomMargin, .flexibleTopMargin, .flexibleLeftMargin, .flexibleRightMargin]
self.translatesAutoresizingMaskIntoConstraints = false
stringLabel.translatesAutoresizingMaskIntoConstraints = false
numberLabel.translatesAutoresizingMaskIntoConstraints = false
leftBackground.translatesAutoresizingMaskIntoConstraints = false
rightBackground.translatesAutoresizingMaskIntoConstraints = false
stackView.translatesAutoresizingMaskIntoConstraints = false
self.addSubview(stackView)
leftBackground.addSubview(stringLabel)
rightBackground.addSubview(numberLabel)
stackView.addArrangedSubview(leftBackground)
stackView.addArrangedSubview(rightBackground)
stackView.axis = .horizontal
stackView.alignment = .fill
stackView.distribution = .fill
stringLabel.setContentHuggingPriority(UILayoutPriorityRequired, for: .horizontal)
stringLabel.setContentHuggingPriority(UILayoutPriorityRequired, for: .vertical)
stringLabel.setContentCompressionResistancePriority(UILayoutPriorityRequired, for: .horizontal)
stringLabel.setContentCompressionResistancePriority(UILayoutPriorityRequired, for: .vertical)
numberLabel.setContentHuggingPriority(UILayoutPriorityRequired, for: .horizontal)
numberLabel.setContentHuggingPriority(UILayoutPriorityRequired, for: .vertical)
numberLabel.setContentCompressionResistancePriority(UILayoutPriorityRequired, for: .horizontal)
numberLabel.setContentCompressionResistancePriority(UILayoutPriorityRequired, for: .vertical)
self.topAnchor.constraint(equalTo: stackView.topAnchor).isActive = true
self.bottomAnchor.constraint(equalTo: stackView.bottomAnchor).isActive = true
self.rightAnchor.constraint(equalTo: stackView.rightAnchor).isActive = true
self.leftAnchor.constraint(equalTo: stackView.leftAnchor).isActive = true
leftBackground.leftAnchor.constraint(equalTo: stringLabel.leftAnchor, constant: 4).isActive = true
leftBackground.rightAnchor.constraint(equalTo: stringLabel.rightAnchor, constant: 4).isActive = true
leftBackground.topAnchor.constraint(equalTo: stringLabel.topAnchor, constant: 4).isActive = true
leftBackground.bottomAnchor.constraint(equalTo: stringLabel.bottomAnchor, constant: 4).isActive = true
rightBackground.leftAnchor.constraint(equalTo: numberLabel.leftAnchor, constant: 4).isActive = true
rightBackground.rightAnchor.constraint(equalTo: numberLabel.rightAnchor, constant: 4).isActive = true
rightBackground.topAnchor.constraint(equalTo: numberLabel.topAnchor, constant: 4).isActive = true
rightBackground.bottomAnchor.constraint(equalTo: numberLabel.bottomAnchor, constant: 4).isActive = true
stringLabel.text = "RESERVE"
numberLabel.text = "10"
stringLabel.textColor = AppColors.WSF_GREEN
numberLabel.textColor = UIColor.white
rightBackground.backgroundColor = AppColors.WSF_GREEN
leftBackground.backgroundColor = UIColor.white
self.layer.borderColor = AppColors.WSF_GREEN.cgColor
self.layer.borderWidth = 3
self.layer.cornerRadius = 4
self.layer.masksToBounds = true
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
}
最佳答案
要定义填充,您可以使用包含 View 的 layoutMargins
属性。你可以引用这个答案:Adding padding to an UIView .
关于ios - 约束无法添加填充,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/52964613/