ios - 快速为常规按钮提供条形按钮标识符

Question

我想要一个不是栏按钮项的按钮来显示垃圾桶图标。有谁知道如何以编程方式执行此操作？

Answer 1

添加你的 Action :

func buttonAction(sender:UIButton!)
{
    println("Button tapped") // add your button tapped logic here
}

然后在viewDidLoad里面:

    var image: UIImage = UIImage(named: "Icon")!  //Icon = your image name, no need for the extension
    let button   = UIButton.buttonWithType(UIButtonType.Custom) as! UIButton  //UIButton type must be CUSTOM or you will get a plain blue system button
    button.frame = CGRectMake(100, 100, 100, 50)  // Size and Co-ordinates
    button.setImage(image, forState: .Normal)  //for normal non touched state 
    button.addTarget(self, action: "buttonAction:", forControlEvents: UIControlEvents.TouchUpInside) // "buttonAction" received here

    self.view.addSubview(button)  //adds subview to display the button