有人能告诉我为什么这段代码不会自动调整descLabel中的文本吗?我试图将numberOfLines设置为0并设置了lineBreakMode,但这几乎没有解决我的问题。这种方法在ViewController中是不可能的,还是我做了一些完全错误的事情?
class SingleEventViewController: UIViewController {
var thisEvent: Event
var eventDescription: String?
let descLabel: UILabel = {
let label = UILabel()
label.font = UIFont.systemFont(ofSize: 16)
label.text = "Beschreibung"
label.textColor = .black
label.numberOfLines = 0
label.lineBreakMode = .byWordWrapping
return label
}()
let participateButton: UIButton = {
let button = UIButton()
button.backgroundColor = CalendarSettings.Colors.buttonBG
button.setTitle("Teilnehmen", for: .normal)
button.setTitleColor(CalendarSettings.Colors.darkRed, for: .normal)
return button
}()
//MARK: - Init & View Loading
init(event: Event) {
thisEvent = event
super.init(nibName: nil, bundle: nil)
setupDefaultValues()
}
override func viewDidLoad() {
super.viewDidLoad()
view.backgroundColor = .white
applyDefaultValues()
setupViews()
confBounds()
}
//MARK: - Setup
func setupDefaultValues() {
eventDescription = thisEvent.eventDescription
}
func applyDefaultValues() {
descLabel.text = eventDescription
}
func setupViews() {
view.addSubview(descLabel)
view.addSubview(participateButton)
let tabbarHeight = self.tabBarController?.tabBar.frame.height ?? 0
descLabel.anchor(top: titleLabel.bottomAnchor, left: view.leftAnchor, bottom: nil, right: nil, paddingTop: 5, paddingLeft: 10, paddingBottom: 0, paddingRight: 0, width: 0, height: 0)
participateButton.anchor(top: nil, left: view.leftAnchor, bottom: view.bottomAnchor, right: view.rightAnchor, paddingTop: 0, paddingLeft: 0, paddingBottom: tabbarHeight, paddingRight: 0, width: 0, height: 50)
}
要使其自动调整大小,必须为其指定左/前导和右/尾约束或固定宽度
descLabel.anchor(top: titleLabel.bottomAnchor, left: view.leftAnchor, bottom: nil, rightview.rightAnchor, paddingTop: 5, paddingLeft: 10, paddingBottom: 0, paddingRight: 0, width: 0, height: 0)
如果是您尝试更改的字体大小以使其适合标签,请尝试adjustFontSizeToWidth,但如果是要调整大小的标签,请尝试sizeToFit()。