如何在Swift中创建圆形按钮? [英] How to create a circular button in Swift?
本文介绍了如何在Swift中创建圆形按钮?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我想制作一个圆形的大拇指和大拇指向下的按钮.
I want to make a circular thumbs up and thumbs down button.
我应该使用ImageView还是Button作为超类?
Should I use a ImageView or a Button as the super class?
我该如何在Swift中做到这一点?
How would I do this in Swift?
推荐答案
以下是圆形按钮示例:
迅速3、4、5:
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)
}
@objc func thumbsUpButtonPressed() {
print("thumbs up button pressed")
}
Swift 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")
}
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