UIButton - 给按钮一个动作？

Question

我通过代码制作了一个按钮（不是在我的故事板上），是的，它显示没有问题，但现在我希望它在按下时执行一个操作。

按钮代码：

let backToHomeButton = UIButton.buttonWithType(UIButtonType.System) as! UIButton
backToHomeButton.frame = CGRectMake(100, 100, 100, 50)
backToHomeButton.backgroundColor = UIColor.greenColor()
backToHomeButton.setTitle("Button", forState: UIControlState.Normal)
backToHomeButton.addTarget(self, action: "Action: ", forControlEvents: UIControlEvents.TouchUpInside)
self.view?.addSubview(backToHomeButton)

我希望它回到主屏幕。

这个我试过了，还是不行：

let backToHomeButton = UIButton.buttonWithType(UIButtonType.System) as! UIButton
backToHomeButton.frame = CGRectMake(100, 100, 100, 50)
backToHomeButton.backgroundColor = UIColor.greenColor()
backToHomeButton.setTitle("Button", forState: UIControlState.Normal)
backToHomeButton.addTarget(self, action: "Action: ", forControlEvents: UIControlEvents.TouchUpInside)
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let vc = storyboard.instantiateViewControllerWithIdentifier("MainMenuViewController") as! UIViewController
self.view?.addSubview(backToHomeButton)

谁能告诉我我做错了什么，我该如何解决？谢谢！

Answer 1

试试这个：

let backToHomeButton = UIButton.buttonWithType(UIButtonType.System) as! UIButton
backToHomeButton.frame = CGRectMake(100, 100, 100, 50)
backToHomeButton.backgroundColor = UIColor.greenColor()
backToHomeButton.setTitle("Button", forState: UIControlState.Normal)
backToHomeButton.addTarget(self, action: "Action:", forControlEvents: UIControlEvents.TouchUpInside)
self.view?.addSubview(backToHomeButton)

// 存在

func Action(sender:UIButton)
{
    let storyboard = UIStoryboard(name: "Main", bundle: nil)
    let vc = storyboard.instantiateViewControllerWithIdentifier("MainMenuViewController") as! UIViewController
    self.presentViewController(vc, animated: true, completion: nil)
}

//第二个选项，如果你推回主视图

func Action(sender:UIButton)
{
navigationController?.popToRootViewControllerAnimated(true)
}    

//或之前的控制器

 func Action(sender:UIButton)
  {
 navigationController?.popViewControllerAnimated(true)
  }

Answer 2

你只需要给按钮添加一个Action，并在action方法中关闭视图：

对于按钮复制这个：

let backToHomeButton = UIButton.buttonWithType(UIButtonType.System) as! UIButton
backToHomeButton.frame = CGRectMake(100, 100, 100, 50)
backToHomeButton.backgroundColor = UIColor.greenColor()
backToHomeButton.setTitle("Button", forState: UIControlState.Normal)
backToHomeButton.addTarget(self, action: "pressed:", forControlEvents: .TouchUpInside)

然后只需添加此方法。并根据您呈现视图的方式选择关闭方法。如果不确定，请尝试一个然后另一个。

func pressed(sender: UIButton!) {

   //IF YOU PRESENTED THE VIEW AS A MODAL

    self.dismissViewControllerAnimated(true, completion: {});

   //IF YOU PUSHED INTO THE VIEW

    navigationController.popViewControllerAnimated(true) 
}

希望对你有帮助。