Question

Can Anyone Tell me why the function is Not Calling Here

Class MasterViewController.h

@interface MasterViewController : UITableViewController 
- (void) populateTableView;

Class ModelViewController.h

#import "MasterViewController.h"
@interface ModelViewController : UIViewController
@property (strong, nonatomic) MasterViewController *MasterViewController;

Class ModelViewController.m

@synthesize MasterViewController;
[MasterViewController.self populateTableView]; // Function Calling

Answer 1

@property (strong, nonatomic) MasterViewController *MasterViewController;

Here you declared a instance variable (property) with the name MasterViewController, which is the same as its class name. When you sent populateTableView message to MasterViewController, actually, the compile treated it as a Class Method (+ (void)populateTableView;) instead of Instance Method (- (void)populateTableView;).

So you’d better declare this iVar to masterViewController instead (m is lower case).

@property (strong, nonatomic) MasterViewController *masterViewController;

then alloc & use it in your method:

...
[self.masterViewController populateTableView];