Create your own Delegate.


In MainClass.h

//Include the sub class header:
#import "MySubClassName.h"

//Add the delegate as an input to the class
@interface MainClassViewController : UIViewController
	<SubClassDelegate>
{
	MySubClassName *mySubClass1;

In MainClass.m

//When the create the sub class:
	mySubClass1 = [[MySubClassName alloc] init];
	[mySubClass1 setDelegate:self];

//The method that will be called back:
- (void)MethodNameToCallBack:(NSString *)s
{
	NSLog(s);
}

//********** DEALLOC **********
- (void)dealloc
{
	[mySubClass1 release];

In SubClass.h

#import <Foundation/Foundation.h>

//Define the protocol for the delegate
@protocol SubClassDelegate
- (void)MethodNameToCallBack:(NSString *)s;
@end

@interface MySubClassName : NSObject
{
	id <SubClassDelegate> delegate;

}
@property (nonatomic, assign) id  <SubClassDelegate> delegate;

@end
In SubClass.m

@implementation MySubClassName
//Synthesize the delegate property:
@synthesize delegate;

//When you want to callback the MainClass method:
	[[self delegate] MethodNameToCallBack:@"Hello World"];

sample code:
Tutorial_framework_ Crate_delegate

By admin-powenko

Dr. Powen Ko is a teacher and CEO on LoopTek LLC, and like to teaching. if you need to class, please let PowenKo know, he will love to service and sharing. LoopTek web site is www.looptek.com

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