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我要实现这样一个复选框: 通过不能为自定义按钮设定设定图像
class CheckBox: UIButton {
let checkedImage = UIImage(named: "checked")
let uncheckedImage = UIImage(named: "unchecked")
var checked : Bool = false{
didSet{
if checked == false{
self.setImage(uncheckedImage, forState: .Normal)
}else {
self.setImage(checkedImage, forState: .Normal)
}
}
}
override func awakeFromNib() {
self.addTarget(self, action: "buttonClicked:", forControlEvents: .TouchUpInside)
checked = false
}
func buttonClicked(sender: UIButton){
if (sender == self){
checked = !checked
}
}
}
莫非你解释发生了什么?
你在哪里创建了按钮 –