Access variable in once from another class in Objective-C - objective-c

Question

I have Two classes in have declared string in one variable and trying access from another class. have initiated getter setter in between them still getting null value when I try to print from subclass.
CustomerCarSelection.h
#import <UIKit/UIKit.h>
#interface CustomerCarSelection : UITableViewController <UITableViewDataSource, UITableViewDataSource>
#property (strong, nonatomic) IBOutlet UITableView *carListTableView;
- (IBAction)next:(id)sender;
#property NSString *carSelectedForService;
#end
customerCarSelection.m
#import "CustomerCarSelection.h"
#import <Parse/Parse.h>
#import "carSelectCellTableViewCell.h"
#import "ServiceResultView.h"
#interface CustomerCarSelection ()
#end
#implementation CustomerCarSelection
#synthesize carListTableView;
#synthesize carSelectedForService;
- (void)viewDidLoad {
[super viewDidLoad];
ServiceResultView *service = [[ServiceResultView alloc]init];
service.pointer = self;
}
-(void) tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSLog(#"cell tabbed");
PFObject *temp = [cellDetails objectAtIndex:indexPath.row];
carSelectedForService = temp.objectId;
NSLog(#"%#", carSelectedForService);
}
serviceResultView.h
#import <UIKit/UIKit.h>
#import "CustomerCarSelection.h"
#interface ServiceResultView : UIViewController
{
CustomerCarSelection *pointer;
}
#property (nonatomic, retain) CustomerCarSelection *pointer;
- (IBAction)confirm:(id)sender;
#end
serviceResultView.m
#import "ServiceResultView.h"
#import "CustomerCarSelection.h"
#interface ServiceResultView ()
#end
#implementation ServiceResultView
#synthesize pointer;
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
NSString *carResult = pointer.carSelectedForService;
NSLog(#"%#", carResult);
}
Where am I making mistake. When the cell tabbed it will assign object id to the String i trying access that object from another class

Answer 1

CustomerCarSelection.h
#import <UIKit/UIKit.h>
#interface CustomerCarSelection : UITableViewController <UITableViewDataSource, UITableViewDataSource>
#property (strong, nonatomic) IBOutlet UITableView *carListTableView;
- (IBAction)next:(id)sender;
#end
customerCarSelection.m
#import "CustomerCarSelection.h"
#import <Parse/Parse.h>
#import "carSelectCellTableViewCell.h"
#import "ServiceResultView.h"
#interface CustomerCarSelection ()
#end
#implementation CustomerCarSelection
#synthesize carListTableView;
#synthesize carSelectedForService;
- (void)viewDidLoad {
[super viewDidLoad];
}
-(void) tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSLog(#"cell tabbed");
PFObject *temp = [cellDetails objectAtIndex:indexPath.row];
serviceResultView *obj = [serviceResultView alloc] init];
obj.carSelectedForService = temp.objectId;
NSLog(#"%#", obj.carSelectedForService);
}
serviceResultView.h
#import <UIKit/UIKit.h>
#import "CustomerCarSelection.h"
#interface ServiceResultView : UIViewController
#property NSString *carSelectedForService;
- (IBAction)confirm:(id)sender;
#end
serviceResultView.m
#import "ServiceResultView.h"
#import "CustomerCarSelection.h"
#interface ServiceResultView ()
#end
#implementation ServiceResultView
#synthesize pointer;
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
NSLog(#"%#", self.carSelectedForService);
}