CODEWITHSUNDEEP
objective-cxcodeuiimageviewstoryboardviewcontroller
emiliomarin
emiliomarin

Reputation: 362

Use IBOutlets on different ViewController storyboard

I have a storyboard app with two different ViewController. On the second ViewController I have a UIImageView and I would like to call that UIImageView on the first one. I've been looking for a solution but I can't find anything that work for me.

@property(nonatomic, retain) IBOutlet UIImageView *pic;

I just want to be able to use that UIImageView on the other viewcontroller. I hope you can help me.

Upvotes: 0

Views: 211

Answers (2)

Live2Enjoy7
Live2Enjoy7

Reputation: 1105

EDIT:

yes you can try to set your UIImageView in prepare for segue. I have tried it and it seems to work. You would do it as follows:

**I am assuming that the controller you are seguing to is called NewViewController **I am also assuming your NewViewController has a UIImageView called imageView

-(void)prepareForSegue....
  {
   if ([segueIdentifier isEqual....])
       {
        NewViewController *newController=(NewViewController *)[segue destinationViewController];

        [[newViewController imageView]setImage:self.someUIImageFromCurrentClass];
        [[newViewController imageView]setNeedDisplay];
       }
  }

and yes, you do have to create a UIImage in current class (in this case it's self.someUIImageFromCurrentClass). That's the point is that you're taking an image from current ViewController (current class) and showing it in the ViewController you are seguing to.

ORIGINAL:

-(void) prepareForSegue: (UIStoryboardSegue *)segue sender:(id)sender
{
  if ([segue.identifier isEqualToString:@"your segue name"])
     {
       [segue.destinationViewController setYourUIImage:self.someImageFromCurrentClass];
     }
}

be sure to import the .h file for the controller you're seguing to.

second, YourUIImage is an UIImage that is publicly declared in the controller you're seguing to (like Michael mentioned).

In the destination controller, you'll want to grab that UIImage and set it as the image for you UIImageView:

[self.myImageView setImage:YourUIImage]; // <-- you can do this in ViewDidLoad or ViewWillAppear

that should get you going

**Also I guess it's worth mentioning is that a segue always creates a new instance of the controller you're seguing to, which doesn't exist before the segue, which is why you have to pass the image to it.

Upvotes: 1

Michael Mior
Michael Mior

Reputation: 28752

You can't use outlets between view controllers (VCs) because there's no automatic one for one VC to refer to another. You'll have to expose public properties or methods that allow the manipulation you need and find some way to pass a reference to one VC from another.

For example, if you pass from one VC to another via a segue, you can manipulate properties in the destination VC from the source in prepareForSegueWithIdentifier:.

Upvotes: 0

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