Question

I have a very simple application that has only 2 view controllers. The initial root controller has two UIButtons on it, and they both transition to the 2nd view controller via Storyboard. The information that is loaded on the 2nd view controller is determined by a buttonPressed IBAction that is linked to both the initial view controller. The problem I am having is that once I tap one of the two buttons, I get the 2nd view controller loading up blank. From debugging, I notice that the buttonPressed function is called after the 2nd view is loaded. How can I make it so that the buttonPressed function is called BEFORE the 2nd view controller is loaded blank?

Hardly any code involved, I have both UIButtons tagged 1 and 2, and the button press function loads two text files depending on the sender tag equaling 1 or 2. Everything is linked up in Storyboard. Any suggestions?

*buttonPressed function:

if([sender tag] == 1)

count = 1;

else

count = 2;

The count determines the file to be loaded.

*In Storyboard, I have just 2 view controllers, (No navigation or any of that) and two UIButtons on the initial view and a text view on the second to display text. The UIButtons are connected to buttonPressed and to the 2nd view controller segue.

Answer 1

This sounds like a case for prepareForSegue!

-(void) prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if([[segue identifier] isEqualToString:@"First Button Segue Identifier"])
    {
        ViewController *theViewController = segue.destinationViewController;
        theViewController.textProperty = self.firstButtonText;
    } 
    else if ([[segue identifier] isEqualToString:@"Second Button Segue Identifier"])
    {
        ViewController *theViewController = segue.destinationViewController;
        theViewController.textProperty = self.secondButtonText;
    }
}

There you go, it is pretty generic because I didn’t know your variable names or what text you are using. Similarly, if the segues don’t have seperate identifiers, you can use the sender to determine which button is being pressed.

Good luck!