Trying to change variables in a singleton using a method
- by Johnny Cox
I am trying to use a singleton to store variables that will be used across multiple view controllers. I need to be able to get the variables and also set them. How do I call a method in a singleton to change the variables stored in the singleton.
total+=1079;
[var setTotal:total];
where var is a
static Singleton *var = nil;
I need to update the total and send to the setTotal method inside the singleton. But when I do this the setTotal method never gets accessed. The get methods work but the setTotal method does not. Please let me know what should. Below is some of my source code
//
// Singleton.m
// Rolo
//
// Created by on 6/28/12.
// Copyright (c) 2012 Johnny Cox. All rights reserved.
//
#import "Singleton.h"
@implementation Singleton
@synthesize total,tax,final;
#pragma mark Singleton Methods
+ (Singleton *)sharedManager
{
static Singleton *sharedInstance = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
sharedInstance = [[Singleton alloc] init];
// Do any other initialisation stuff here
});
return sharedInstance;
}
+(void) setTotal:(double) tot
{
Singleton *shared = [Singleton sharedManager];
shared.total = tot;
NSLog(@"hello");
}
+(double) getTotal
{
Singleton *shared = [Singleton sharedManager];
NSLog(@"%f",shared.total);
return shared.total;
}
+(double) getTax
{
Singleton *shared = [Singleton sharedManager];
NSLog(@"%f",shared.tax);
return shared.tax;
}
@end
//
// Singleton.h
// Rolo
//
// Created by on 6/28/12.
// Copyright (c) 2012 Johnny Cox. All rights reserved.
//
#import <Foundation/Foundation.h>
@interface Singleton : NSObject
@property (nonatomic, assign) double total;
@property (nonatomic, assign) double tax;
@property (nonatomic, assign) double final;
+ (id)sharedManager;
+(double) getTotal;
+(void) setTotal;
+(double) getTax;
@end
