Delegate not being called - iphone

Question

I've a viewcontroller "ResultsViewController" with a button called emailbutton. when this button is pressed, i want a function to be called from another view called "Illusions_AppViewController" (both these viewcontrollers are not linked).
Therefore i defined a protocol in the "ResultsViewController.h":
#protocol ResultsViewDelegate <NSObject>
#optional
- (void) resultspage;
#end
#interface ResultsViewController : UIViewController
{
id<ResultsViewDelegate> mydelegate;
UIButton *emailButton;
}
#property(nonatomic,retain) IBOutlet UIButton *emailButton;
#property (nonatomic,assign) id<ResultsViewDelegate> mydelegate;
#end
In the ResultsViewController.m :
-(IBAction)emailButtonPressed:(id)sender
{
NSLog(#"entered emailbuttonpressed");// the app enters this method and gets hanged
if ([mydelegate respondsToSelector:#selector(resultspage)]) {
NSLog(#"entered respondstoselector");// this is never displayed in the log-showing that the delegates doesnt respond to selector
[mydelegate resultspage];
}
}
In my other view, "Illusions_AppViewController.m":
- (void)resultspage{
NSLog(#"Entered results page");
ResultsPageController *resultspagecontroller = [[ResultsPageController alloc] initWithNibName:#"ResultsPageController" bundle:nil];
resultspagecontroller.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
[self presentModalViewController:resultspagecontroller animated:YES];
}
Would appreciate if anyone can help me with this. I've no clue of why the delegate is not called. the app gets hanged as soon as i press the emailbutton. Thanks!

Answer 1

The implementation/use of delegates is wrong. Please refer to this tutorial.
Hope this helps.
Thanks,
Madhup

Answer 2

or is there any other way to get this done. i just need the results page function to be called whenever the email button is pressed. i tried using this way:
ResultsViewController.m
-(IBAction)emailButtonPressed:(id)sender
{
NSLog(#"entered emailbuttonpressed");
illusions_AppViewController *illusionsview = [[illusions_AppViewController alloc]init];
[illusionsview performSelector:#selector(resultspage)];
}
Now the results page function gets called, but the resultspagecontroller that it needs to display as a modalviewcontroller never appears.the app hangs, and no errors in the console either.

Answer 3

To answer your second question, you are on the right track. Simply create an instance of your Illusions_AppViewController and call the illusionsView method in it instead using:
- (IBAction)emailButtonPressed {
illusions_AppViewController *illusionsview = [[illusions_AppViewController alloc]init];
[illusionsview resultspage];
[illusionsview release];
}