///////////////////BUTON

//-- button.h file

@interface MyButton : NSObject {

id receiver;

SEL selector;

}

//-- button.m file

-(void)addTarget:(id)target action:(SEL)action{

receiver = target;

selector =  action;

}

-(void)touch{

if (receiver) {

[receiver performSelector:selector];

}

}

//////////////////RECEIVER 

//-- receiver.m file

...

MyButton *mybutton = [[MyButton alloc] init];

[mybutton addTarget:self action:@selector(actionMethod)];

...

-(void)actionMethod{

//some code

}