import UIKit
class BackButton: UIButton
{
override func titleRectForContentRect(contentRect: CGRect) -> CGRect
{
return CGRectMake(self.frame.size.width/3.0, self.frame.size.height/6.0, self.frame.size.width/4.0*3.0, self.frame.size.height/3.0*2.0)
}
override func imageRectForContentRect(contentRect: CGRect) -> CGRect
{
return CGRectMake(0, self.frame.size.height/6.0, self.frame.size.width/4.0, self.frame.size.height/3.0*2.0)
}
}
现在可以引用这个按钮了
现在你可以使用这个按钮了
let backBtn = BackButton()
backBtn.frame = CGRectMake(0, 0, 60, 30)
backBtn.setImage(UIImage(named: "backImg"), forState:UIControlState.Normal)
backBtn.setTitle("返回", forState: UIControlState.Normal)
