我正在Xcode 6的最新版本中使用swift构建一个应用程序,我想知道如何修改我的按钮,使它可以有一个圆形的边界,如果需要,我可以调整自己。一旦完成,我如何改变边界本身的颜色而不添加背景?换句话说,我想要一个略圆的按钮,没有背景,只有一个特定颜色的1pt边界。
当前回答
试试这个 带有圆角的按钮边框
anyButton.backgroundColor = .clear
anyButton.layer.cornerRadius = anyButton.frame.height / 2
anyButton.layer.borderWidth = 1
anyButton.layer.borderColor = UIColor.black.cgColor
其他回答
@IBOutlet weak var button: UIButton!
...
我认为对于半径来说,这个参数足够了:
button.layer.cornerRadius = 5
试试这个 带有圆角的按钮边框
anyButton.backgroundColor = .clear
anyButton.layer.cornerRadius = anyButton.frame.height / 2
anyButton.layer.borderWidth = 1
anyButton.layer.borderColor = UIColor.black.cgColor
你可以子类化UIButton并给它添加@IBInspectable变量,这样你就可以通过StoryBoard的“Attribute Inspector”配置自定义按钮参数。下面我写下代码。
@IBDesignable
class BHButton: UIButton {
/*
// Only override draw() if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
override func draw(_ rect: CGRect) {
// Drawing code
}
*/
@IBInspectable lazy var isRoundRectButton : Bool = false
@IBInspectable public var cornerRadius : CGFloat = 0.0 {
didSet{
setUpView()
}
}
@IBInspectable public var borderColor : UIColor = UIColor.clear {
didSet {
self.layer.borderColor = borderColor.cgColor
}
}
@IBInspectable public var borderWidth : CGFloat = 0.0 {
didSet {
self.layer.borderWidth = borderWidth
}
}
// MARK: Awake From Nib
override func awakeFromNib() {
super.awakeFromNib()
setUpView()
}
override func prepareForInterfaceBuilder() {
super.prepareForInterfaceBuilder()
setUpView()
}
func setUpView() {
if isRoundRectButton {
self.layer.cornerRadius = self.bounds.height/2;
self.clipsToBounds = true
}
else{
self.layer.cornerRadius = self.cornerRadius;
self.clipsToBounds = true
}
}
}
使用button.layer。cornerRadius, button.layer.borderColor和button.layer.borderWidth。 注意borderColor需要CGColor,所以你可以说(Swift 3/4):
button.backgroundColor = .clear
button.layer.cornerRadius = 5
button.layer.borderWidth = 1
button.layer.borderColor = UIColor.black.cgColor
@IBOutlet weak var yourButton: UIButton! {
didSet{
yourButton.backgroundColor = .clear
yourButton.layer.cornerRadius = 10
yourButton.layer.borderWidth = 2
yourButton.layer.borderColor = UIColor.white.cgColor
}
}