How can I delegate method from modalView to the parentView

Question

Hi
I've 2 ViewControllers: parent,and child(ModalView)
the parent is named "testDelegationViewController" and the child is "modal"
then I want to send some parameters from the modalView to parentView On dismiss of the child
but it doesn't work. I think that something is missing on my code.
testDelegationViewController.h:
#import <UIKit/UIKit.h>
#import "modal.h";
@interface testDelegationViewController : UIViewController<myDelegate> {
IBOutlet UIButton *btnParent ;
IBOutlet UILabel *lblParent ;
@property (nonatomic, retain) IBOutlet UIButton *btnParent;
@property (nonatomic, retain) IBOutlet UILabel *lblParent;
-(IBAction) parentButtonclicked;
@end
testDelegationViewController.m
#import "testDelegationViewController.h"
#import "modal.h";
@implementation testDelegationViewController
@synthesize btnParent;
@synthesize lblParent;
-(IBAction) parentButtonclicked
self.lblParent.text=@"changed by btnParent";
modal *m = \[\[modal alloc\] initWithNibName:@"modal" bundle:nil\];
\[self presentModalViewController:m animated:YES\];
- (void)modalButtonlicked:(NSString *)subcontroller
NSLog(@"modal Button clicked");// >>>>>>>>>>method not called problem here<<<<<<<<<<<<<<<<<
//NSString *myData = \[subcontroller getData\];
// \[self dimissModalViewControllerAnimated:YES\];
- (void)didReceiveMemoryWarning {
\[super didReceiveMemoryWarning\];
- (void)viewDidUnload {
- (void)dealloc {
\[super dealloc\];
@end
modal.h
#import <UIKit/UIKit.h>
//@protocol myDelegate;
@protocol myDelegate
-(void)modalButtonlicked:(NSString *)subController;
//-(void)clickedButton:(modal *)subController;
@end
@interface modal : UIViewController {
IBOutlet UIButton *btnmodal ;
id<myDelegate> delegate;
NSString *data;
@property (nonatomic, retain) IBOutlet UIButton *btnmodal;
@property (nonatomic, assign) id<myDelegate> delegate;
-(IBAction) returnParent;
-(NSString *)getData;
@end
modal.m
#import "modal.h"
@implementation modal
@synthesize btnmodal;
@synthesize delegate;
-(IBAction) returnParent
NSLog(@"child button clicked");
\[delegate modalButtonlicked:@"change parent label from modal"\];
// \[delegate modalButtonlicked:self\];//the dismiss must be in the parentView
\[super dismissModalViewControllerAnimated:YES\];
- (void)didReceiveMemoryWarning {
\[super didReceiveMemoryWarning\];
- (void)viewDidUnload {
\[super viewDidUnload\];
- (void)dealloc {
\[super dealloc\];
@end
can you help me?
thanks in advance
null

Answer 1

Hi Sculpteur, and wecome to the Dev Forum!
It looks like you never connected the delegate property of the modal view controller to the parent view controller. The easiest way to fix that is to make the connection in code right after the modal controller is created:
-(IBAction) parentButtonclicked
self.lblParent.text=@"changed by btnParent";
modal *m = [[modal alloc] initWithNibName:@"modal" bundle:nil];
m.delegate = self; // <-- make this object the delegate of m
[self presentModalViewController:m animated:YES];
[m release]; // <-- fix memory leak
- Ray