Singleton Integer Issue - iphone

Question

I have a singleton which I hold a single integer in, my score. However when I load it form the singleton in a another view it doesn't show what I want but instead sticks at a wired 6592960. Any ideas why? Something to do with how I am using #property Im thinking, what the correct way to #property an int?
Thanks.
EDIT:
Code:
Singleton .h
#import <Foundation/Foundation.h>
#interface scoreData : NSObject {
int score;
}
#property int score;
+ (scoreData *)sharedData;
#end
Singleton .m
#import "scoreData.h"
static scoreData *sharedData = nil;
#implementation scoreData
#synthesize score;
#pragma mark -
#pragma mark Singleton Methods
+ (scoreData *)sharedData {
if(sharedData == nil){
sharedData = [[super allocWithZone:NULL] init];
}
return sharedData;
}
+ (id)allocWithZone:(NSZone *)zone {
return [[self sharedManager] retain];
}
- (id)copyWithZone:(NSZone *)zone {
return self;
}
- (id)retain {
return self;
}
- (unsigned)retainCount {
return NSUIntegerMax;
}
- (void)release {
//do nothing
}
- (id)autorelease {
return self;
}
#end
Inside my other view, I access like this and then try and change the number and of course I import the singleton:
scoreData *score = [scoreData sharedData];
score.score = 0;

Answer 1

MySingleton.h
#import <Foundation/Foundation.h>
#interface MySingleton : NSObject {
}
#property(nonatomic,assign) int score;
+ (MySingleton*) sharedInstance;
#end
MySingleton.m
#import "MySingleton.h"
static MySingleton *_instance;
#implementation MySingleton
#synthesize score;
+ (MySingleton*)sharedInstance
{
#synchronized(self) {
if (_instance == nil) {
_instance = [[super allocWithZone:NULL] init];
}
}
return _instance;
}
#pragma mark Singleton Methods
+ (id)allocWithZone:(NSZone *)zone
{
return [[self sharedInstance]retain];
}
- (id)copyWithZone:(NSZone *)zone
{
return self;
}
- (id)retain
{
return self;
}
- (unsigned)retainCount
{
return NSUIntegerMax;
}
- (void)release
{
}
- (id)autorelease
{
return self;
}
#end
See this xcode-template to simplify singleton-generation.

Answer 2

If it's a true singleton, then you can have your getter and setter simply directly access an initialized static global variable, and skip all the runtime alloc and zone busywork.

Answer 3

I would write the #property like this:
#property (nonatomic,assign) int score;
Also i would change sharedData:
+ (scoreData *)sharedData {
if( sharedData == nil ){
sharedData = [[self alloc] init];
}
return sharedData;
}
Edit: I tried your code and got EXC_BADACCESS because it went recursive here:
+ (id)allocWithZone:(NSZone *)zone {
return [[self sharedManager] retain];
}
When i removed that method everything worked as expected.