我有一个材料按钮。当我点击它时，按钮中的文本标签会缩小并保持较小，释放后永远不会恢复到原始大小。我使用的可可豆荚是 pod 'MaterialComponents/Buttons', '~> 92.4.0'
点击前
点击后
import UIKit
import MaterialComponents.MaterialButtons
class TestViewController: UIViewController {
private let testButton: MDCButton = {
let button = MDCButton()
button.translatesAutoresizingMaskIntoConstraints = false
button.setTitle("Test", for: UIControl.State.normal)
button.titleLabel?.font = UIFont(name: button.titleLabel!.font.fontName, size: 22)
button.titleLabel?.adjustsFontSizeToFitWidth = true
button.titleLabel?.numberOfLines = 1
button.titleLabel?.minimumScaleFactor = 0.5
button.titleLabel?.lineBreakMode = NSLineBreakMode.byClipping;
button.setTitleColor(.white, for: .normal)
button.backgroundColor = UIColor.blue
button.layer.cornerRadius = 10
button.layer.shadowColor = UIColor.gray.cgColor
button.layer.shadowOffset = CGSize(width: 0.0, height: 3.0)
button.layer.shadowOpacity = 0.3
button.layer.shadowRadius = 1.0
button.layer.masksToBounds = false
return button
}()
override func viewDidLoad() {
super.viewDidLoad()
self.setNeedsStatusBarAppearanceUpdate()
self.view.backgroundColor = UIColor.white
self.navigationItem.title = "The Page"
self.view.addSubview(testButton)
var testConstraintsArray: [NSLayoutConstraint] = []
testConstraintsArray.append(testButton.centerXAnchor.constraint(equalTo:
self.view.centerXAnchor))
testConstraintsArray.append(testButton.centerYAnchor.constraint(equalTo:
self.view.centerYAnchor))
NSLayoutConstraint.activate(testConstraintsArray)
}
override var preferredStatusBarStyle: UIStatusBarStyle {
return .lightContent
}
}