CODEWITHSUNDEEP
iosswiftdelegatessegue
fs_tigre
fs_tigre

Reputation: 10738

Go to second viewController without segues

In the following code I have an action/button that when tapped takes you to a different viewController (SecondViewController), everything works fine but there is a line of code that I don't fully understand.

What is this line of code doing?

secondVC.delegate = self

What delegate are we talking about here? Is that really needed if I only need to go to other view and I'm not passing any data?

@IBAction func goToView(sender: AnyObject) {  
    let secondVC= storyboard?.instantiateViewControllerWithIdentifier("secondViewController") as! SecondViewController  
    secondVC.delegate = self // is this needed?  
    self.presentViewController(secondVC, animated:true, completion:nil)  
}

Upvotes: 2

Views: 2826

Answers (3)

SwiftDeveloper
SwiftDeveloper

Reputation: 7370

Delete

secondVC.delegate = self

and use it clear ;

@IBAction func goToView(sender: AnyObject) {  
    let secondVC =  storyboard?.instantiateViewControllerWithIdentifier("secondViewController") as! SecondViewController   
    self.presentViewController(secondVC, animated:true, completion:nil)  
}

Dont need to use delegate vc. Thanks

Upvotes: 1

Chatar Veer Suthar
Chatar Veer Suthar

Reputation: 15639

  1. secondVC.delegate = self

This line of coding is passing object reference of current class in which you are standing to SecondViewController. Now, you can call methods of firstViewController(I assume this name), by using delegate object in secondViewController.

  1. This delegate is not needed

, if you simply want to go to Next Screen which is SecondViewController in your case.

  1. Helpful code:

Following will pass you to next controller, make sure that you have navigationController or not. As in NavigationController, you have to pushViewController into stack.

@IBAction func goToView(sender: AnyObject) {  
    let secondVC= storyboard?.instantiateViewControllerWithIdentifier("secondViewController") as! SecondViewController  
    self.presentViewController(secondVC, animated:true, completion:nil)
}

or in case of NavigationController

@IBAction func goToView(sender: AnyObject) {  

let secondVC = self.storyboard?.instantiateViewControllerWithIdentifier("secondViewController") as? SecondViewController
    self.navigationController?.pushViewController(secondVC!, animated: true)
}

I hope my descriptive answer will help you. Feel free to ask any query in comments.

Thanks.

Upvotes: 5

Fredrik
Fredrik

Reputation: 263

If I was in your situation I'd just use the following code:

@IBAction func goToView(sender: AnyObject)
{
  self.performSegueWithIdentifier("secondViewController", sender: sender)
}

Upvotes: 0

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