如何使用动态视图iOS Swift处理导航？

Question

I am adding custom UIViews to my UIScrollView, and every UIView has a button that needs to open some users profile which must open in new UIViewController. But how do i create and connect a new controller with that button?

Here is my code:

class FollowersViewController: UIViewController {

@IBOutlet weak var scrollView: UIScrollView!


override func viewDidLoad() {
    super.viewDidLoad()
    for  var i = 0; i < count; i++ {

        view = FollowerView(frame: CGRectMake(0, scrollHeight, self.view.frame.width, 62))

        scrollView.addSubview(view)
        scrollHeight += view.frame.height
        scrollView.contentSize.height += view.frame.height
    }



}

If there is a button inside my CustomView that opens different (maybe dynamic) ViewControllers depending on its content how can I handle this issue?

Answer 1

Add a button to your view , and assign a tag to it. Based on this tag, you can check which button is calling the selector actionForButton using a switch-case:

override func viewDidLoad() {
    super.viewDidLoad()
    for  var i = 0; i < count; i++ {
        var view: CustomView = followers[i]
        view = FollowerView(frame: CGRectMake(0, scrollHeight, self.view.frame.width, 62))

        var button = UIButton(frame: CGRectMake(0, 0, 40, 40))        
        button.addTarget(self, action: "actionForButton", forControlEvents: .TouchUpInside)
        button.tag = i;
        view.addSubview(button)

        scrollView.addSubview(view)
        scrollHeight += view.frame.height
        scrollView.contentSize.height += view.frame.height
    }
}


func actionForButton(sender: UIButton) {

    switch (sender.tag)
    {

    case 0: //perform related task
        break

    case 1: //perform related task
        break
    }
}

Answer 2

You can try to modify your CustomView to accept 1 parameter as UIViewController. And then when your are adding gesture set this controller as target.

Code:

view = FollowerView(self, frame: CGRectMake(0, scrollHeight, self.view.frame.width, 62))

Your CustomView init:

func init(controller: UIViewController, frame: CGRect)

And your view gestureRecognizer:

followGesture = UITapGestureRecognizer(target: controller, action: "follow:") 
follow.addGestureRecognizer(followGesture)

Then in your FollowersViewController you can implement your target function:

func follow(sender: UITapGestureRecognizer) {
    // do your stuff
}