unable to receive callback from second view controller - ios

Question

I have got two view controllers. Im trying to pass data to the previous viewcontroller
I have the following code in my second view controller CEPeoplePickerNavigationController
#class CEPeoplePickerNavigationController;
#protocol CEPeoplePickerNavigationControllerDelegate <NSObject>
- (void)previousViewController:(CEPeoplePickerNavigationController *)controller itemToSend:(NSString *)item;
#end
#interface CEPeoplePickerNavigationController : UIViewController <UITableViewDelegate,UITableViewDataSource>{
}
#property (nonatomic, retain) id < CEPeoplePickerNavigationControllerDelegate> peoplePickerDelegate;
#end
When the user clicks the done button, following code will be exectied
- (void)doneAction:(id)sender
{
[self.peoplePickerDelegate previousViewController:self itemToSend:#"From Previous VC"];
[self dismissViewControllerAnimated:YES completion:nil];
}
In my first view controller, I have the following interface in header file and I have ofcourse implemented the previousViewController method in my first view controller where the data has to be received
#interface CallViewViewController : UIViewController<CEPeoplePickerNavigationControllerDelegate>
#end
When I move from the first view controller to the second view controller, Im using the following code.
CEPeoplePickerNavigationController *nextVc = [[CEPeoplePickerNavigationController alloc] init];
nextVc.peoplePickerDelegate = self;
[self presentViewController:nextVc animated:YES completion:nil];
But when the user clicks the done button from the second view controller, Im not receiving any callback in my first view controller. why so?
I have implemented the interface as following,
- (void)previousViewController:(CEPeoplePickerNavigationController *)controller itemToSend:(NSString *)item
{
NSLog(#"from CEPeoplePickerNavigationController %#",item);
}
UPDATE:
Following code works
if ([[CallViewViewController new] respondsToSelector:#selector(previousViewController:item:)]) {
[self.viewCrtrlDelegate previousViewController:self item:#"Here I am"];
[self dismissViewControllerAnimated:YES completion:nil];
}
else{
NSLog(#"Your delegate was properly set");
}
But if I try it by following way, it is not working
if ([[self.viewCrtrlDelegate respondsToSelector:#selector(previousViewController:item:)]) {
[self.viewCrtrlDelegate previousViewController:self item:#"Here I am"];
[self dismissViewControllerAnimated:YES completion:nil];
}
else{
NSLog(#"Your delegate was properly set");
}
This is how Im instantiating the view controller.
CEPeoplePickerNavigationController *nextVc = [[CEPeoplePickerNavigationController alloc] init];
nextVc.viewCrtrlDelegate = self;
[self presentViewController:nextVc animated:YES completion:nil];

Answer 1

Your code seems absolutely correct but to get around all the possibilities.
Can you check whether your done button action has a check to know if the delegate methods is available or not in that class?
if ([self.viewCrtrlDelegate respondsToSelector:#selector(previousViewController:item:)]) {
[self.viewCrtrlDelegate previousViewController:self item:#"Here I am"];
[self dismissViewControllerAnimated:YES completion:nil];
}
else{
NSLog(#"Your delegate was properly set");
}