Singleton changes is not preserved to the next view IOS - iphone

Question

I have a singleton class which I intend to share throughout my whole application.
It looks like this:
.m
#implementation PersonalGlobal
#synthesize firstName;
#synthesize lastName;
#synthesize SSN;
#synthesize customerNo;
#synthesize email;
#synthesize address;
#synthesize city;
#synthesize postalCode;
#synthesize telNo;
#synthesize mobileNo;
#pragma mark Singleton Methods
+ (id)sharedPersonal {
static PersonalGlobal *sharedPersonalGlobal = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
sharedPersonalGlobal = [[self alloc] init];
});
return sharedPersonalGlobal;
}
- (void)dealloc {
[super dealloc];
// Should never be called
}
#end
.h
#import <foundation/Foundation.h>
#interface PersonalGlobal : NSObject {
NSString *firstName;
NSString *lastName;
NSString *SSN;
NSString *customerNo;
NSString *email;
NSString *address;
NSString *city;
NSString *postalCode;
NSString *telNo;
NSString *mobileNo;
}
#property (nonatomic, retain) NSString *firstName;
#property (nonatomic, retain) NSString *lastName;
#property (nonatomic, retain) NSString *SSN;
#property (nonatomic, retain) NSString *customerNo;
#property (nonatomic, retain) NSString *email;
#property (nonatomic, retain) NSString *address;
#property (nonatomic, retain) NSString *city;
#property (nonatomic, retain) NSString *postalCode;
#property (nonatomic, retain) NSString *telNo;
#property (nonatomic, retain) NSString *mobileNo;
+ (id)sharedPersonal;
#end
In the code I save strings to it like so:
PersonalGlobal *sharedPersonal = [PersonalGlobal sharedPersonal];
sharedPersonal.firstName = #"Some string";
But when I change view and try to access the string like this:
PersonalGlobal *sharedPersonal = [PersonalGlobal sharedPersonal];
//Setting some textfield
sometextfield.text = sharedPersonal.firstName;
I get nothing. I have done a #import "PersonalGlobal.h" in all the files.
Can i commit the changes in any way to the singleton class?
Can anyone see what I am doing wrong here?
Thanks!

Answer 1

Your implementation is looking fine. This should work if your singleton returning the only one instance . So the point of doubt in your sharedPersonal method . Just try to add breakpoints in this method and see whether it is creating a new instance every time .for the reference I got this SO question.
If not then you can also try this :
+(SingleTon *)getSharedInstance
{
static PersonalGlobal *sharedPersonalGlobal = nil;
if (sharedPersonalGlobal==nil)
{
sharedPersonalGlobal=[[PersonalGlobal alloc]init];
}
return sharedPersonalGlobal;
}
This is working code for me.

Answer 2

Your singleton implementation looks ok. I wouldn't be surprised if in this case the code that you wrote to set the firstName just never gets executed. If I were you I would step through the codes.