Perform Segue programmatically and pass parameters to the destination view

Question

in my app I ve a button that performs a segue programmatically   -  void myButtonMethod         execute segue programmatically      self performSegueWithIdentifier    MySegue  sender  self       I would like to know if there is a way to reference the destination view and to pass it some parameters   I know that in prepareForSegue method  I can refer to it with myDestinationViewController  vc    segue destinationViewController    but I don t know how to this executing the segue programmatically   Do you have any ideas   Thanks  yassa    UPDATE   I m sorry for this question    I simply discovered that  even if the segue is invoked programmatically  the prepareForSegue method is called anyway and so it is possible to pass parameters in the same usual way

User · Answer

I understand the problem of performing the segue at one place and maintaining the state to send parameters in prepare for segue.

I figured out a way to do this. I've added a property called userInfoDict to ViewControllers using a category. and I've override perform segue with identifier too, in such a way that If the sender is self(means the controller itself). It will pass this userInfoDict to the next ViewController.

Here instead of passing the whole UserInfoDict you can also pass the specific params, as sender and override accordingly.

1 thing you need to keep in mind. don't forget to call super method in ur performSegue method.

User · Answer

Swift 4   override func prepare for segue  UIStoryboardSegue  sender  Any         if segue identifier     ExampleSegueIdentifier            if let destinationVC   segue destination as  ExampleSegueVC               destinationVC exampleString    Example                      Swift 3   override func prepareForSegue segue  UIStoryboardSegue  sender  AnyObject             if segue identifier     ExampleSegueIdentifier                if let destinationVC   segue destinationViewController as  ExampleSegueVC                   destinationVC exampleString    Example

User · Answer

Old question but here s the code on how to do what you are asking  In this case I am passing data from a selected cell in a table view to another view controller    in the  h file of the trget view    property weak  nonatomic   NSObject  dataModel    in the  m file     synthesize dataModel    dataModel can be string  int  or like in this case it s a model that contains many items  -  void someMethod         self performSegueWithIdentifier   loginMainSegue  sender self        OR     -  void someMethod       UIViewController  myController    self storyboard instantiateViewControllerWithIdentifier   HomeController         self navigationController pushViewController  myController animated YES      -  void prepareForSegue  UIStoryboardSegue   segue sender  id sender       if  segue identifier isEqualToString   storyDetailsSegway              UITableViewCell  cell    UITableViewCell    sender          NSIndexPath  indexPath    self tableView indexPathForCell cell           NSDictionary  storiesDict   topStories objectAtIndex  indexPath row            StoryModel  storyModel     StoryModel alloc  init           storyModel   storiesDict          StoryDetails  controller    StoryDetails   segue destinationViewController          controller dataModel  storyModel

User · Answer

In case if you use new swift version   override func prepare for segue  UIStoryboardSegue  sender  Any             if segue identifier     ChannelMoreSegue

User · Answer

The answer is simply that it makes no difference how the segue is triggered   The prepareForSegue sender  method is called in any case and this is where you pass your parameters across

[ios] Perform Segue programmatically and pass parameters to the destination view

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