Swift全新。
我想在"启动"按钮上放上文本,但要显示所有文本。在原始代码中,我有我想要的内容,但是我无法显示整个标签文本。可以对此进行什么编辑,以便显示全部文本?
使用原始代码:
func setupViews() {
self.view.addSubview(lblTitle)
lblTitle.topAnchor.constraint(equalTo: self.view.topAnchor, constant: 150).isActive=true
lblTitle.centerXAnchor.constraint(equalTo: self.view.centerXAnchor).isActive=true
lblTitle.widthAnchor.constraint(equalToConstant: 250).isActive=true
lblTitle.heightAnchor.constraint(equalToConstant: 80).isActive=true
self.view.addSubview(btnGetStarted)
btnGetStarted.heightAnchor.constraint(equalToConstant: 50).isActive=true
btnGetStarted.widthAnchor.constraint(equalToConstant: 150).isActive=true
btnGetStarted.centerXAnchor.constraint(equalTo: self.view.centerXAnchor).isActive=true
btnGetStarted.centerYAnchor.constraint(equalTo: self.view.centerYAnchor, constant: 0).isActive=true
}
let lblTitle: UILabel = {
let lbl=UILabel()
lbl.text="Bacon ipsum dolor amet shankle filet mignon bacon shank frankfurter buffalo. Swine andouille burgdoggen jerky. Kevin meatball jerky tri-tip tail, biltong meatloaf fatback cupim pork chop."
lbl.textColor=UIColor.darkGray
lbl.textAlignment = .center
lbl.font = UIFont.systemFont(ofSize: 46)
lbl.numberOfLines=2
lbl.translatesAutoresizingMaskIntoConstraints=false
return lbl
}()
let btnGetStarted: UIButton = {
let btn=UIButton()
btn.setTitle("Get Started", for: .normal)
btn.setTitleColor(UIColor.white, for: .normal)
btn.backgroundColor=UIColor.orange
btn.layer.cornerRadius=5
btn.layer.masksToBounds=true
btn.translatesAutoresizingMaskIntoConstraints=false
btn.addTarget(self, action: #selector(btnGetStartedAction), for: .touchUpInside)
return btn
}()
}
标签和按钮都具有最低尺寸的属性属性以及可容纳宽度的bool属性。尝试使用它。
button.titleLabel?.minimumScaleFactor = 0.1
button.titleLabel?.numberOfLines = 2
button.titleLabel?.adjustsFontSizeToFitWidth = true
标签具有相同的属性来扩展字体。
lbl.minimumScaleFactor = 0.1
lbl.numberOfLines = 2
lbl.adjustsFontSizeToFitWidth = true
- 尝试更改标签的
height
,然后将topAnchor
添加到按钮 -
添加
adjustsFontSizeToFitWidth
,numberOfLines=0
,sizeToFit()
到标签func setupViews() { self.view.addSubview(lblTitle) lblTitle.topAnchor.constraint(equalTo: self.view.topAnchor, constant: 150).isActive=true lblTitle.centerXAnchor.constraint(equalTo: self.view.centerXAnchor).isActive=true lblTitle.widthAnchor.constraint(equalToConstant: 250).isActive=true lblTitle.heightAnchor.constraint(equalToConstant: 250).isActive=true self.view.addSubview(btnGetStarted) btnGetStarted.topAnchor.constraint(equalTo: lblTitle.bottomAnchor, constant: 20).isActive=true btnGetStarted.heightAnchor.constraint(equalToConstant: 50).isActive=true btnGetStarted.widthAnchor.constraint(equalToConstant: 150).isActive=true btnGetStarted.centerXAnchor.constraint(equalTo: self.view.centerXAnchor).isActive=true btnGetStarted.centerYAnchor.constraint(equalTo: self.view.centerYAnchor, constant: 0).isActive=true } let lblTitle: UILabel = { let lbl=UILabel() lbl.text="Bacon ipsum dolor amet shankle filet mignon bacon shank frankfurter buffalo. Swine andouille burgdoggen jerky. Kevin meatball jerky tri-tip tail, biltong meatloaf fatback cupim pork chop." lbl.textColor=UIColor.darkGray lbl.textAlignment = .center lbl.font = UIFont.systemFont(ofSize: 46) lbl.adjustsFontSizeToFitWidth = true lbl.numberOfLines=0 lbl.sizeToFit() lbl.translatesAutoresizingMaskIntoConstraints=false return lbl }()