ios 如何在 Swift 中创建一个圆形按钮？
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时间：2020-08-31 02:49:06 来源:igfitidea点击:
How to create a circular button in Swift?
提问by User
I want to make a circular thumbs up and thumbs down button.
我想做一个圆形的拇指向上和拇指向下按钮。
Should I use a ImageView or a Button as the super class?
我应该使用 ImageView 还是 Button 作为超类？
How would I do this in Swift?
我将如何在 Swift 中做到这一点？
回答by vacawama
Here is an example round button:
这是一个圆形按钮示例：
Swift 3:
斯威夫特 3：
override func viewDidLoad() {
super.viewDidLoad()
let button = UIButton(type: .custom)
button.frame = CGRect(x: 160, y: 100, width: 50, height: 50)
button.layer.cornerRadius = 0.5 * button.bounds.size.width
button.clipsToBounds = true
button.setImage(UIImage(named:"thumbsUp.png"), for: .normal)
button.addTarget(self, action: #selector(thumbsUpButtonPressed), for: .touchUpInside)
view.addSubview(button)
}
func thumbsUpButtonPressed() {
print("thumbs up button pressed")
}
Swift 2.x:
斯威夫特 2.x：
override func viewDidLoad() {
super.viewDidLoad()
let button = UIButton(type: .Custom)
button.frame = CGRect(x: 160, y: 100, width: 50, height: 50)
button.layer.cornerRadius = 0.5 * button.bounds.size.width
button.clipsToBounds = true
button.setImage(UIImage(named:"thumbsUp.png"), forState: .Normal)
button.addTarget(self, action: #selector(thumbsUpButtonPressed), forControlEvents: .TouchUpInside)
view.addSubview(button)
}
func thumbsUpButtonPressed() {
print("thumbs up button pressed")
}
