Question

I’m defining some simple variables in a class of type NSString
one of them is keeping my sqlite database path for example, and so on…
I am initializing that in the AppDelegate , function didFinishLaunchingWithOptions
and when I’m trying to see it’s value outside this function… it’s losing it’s value durring runtime, (no I’m not overwrting or anything…)
here’s my code…

app.h file

@interface AppDelegate : NSObject <UIApplicationDelegate, UITabBarControllerDelegate> {
.....................
    NSString *site_domain;

    NSString *databaseName;
    NSString *databasePath;
..........................
}

app.m file

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {    
    databaseName = @"database.sqlite";  
    site_domain=@"http://localhost/webservice";   

         NSLog(@"%@",site_domain);
// inside this function I can use the value, ..if I call whatever function from 
//this function, that function can also use the value...
}

-(void) functionTest {
   NSLog(@"%@",site_domain);
//here the value is lost, it's like it can't reach it's pointer or something...
//puts on a wierd string
}

What am i Doing wrong?

Answer 1

Because you never take ownership of it, your string is getting autoreleased by the auto release pool. In your didFinishLaunchingWithOptions: method, try using:

site_domain = [[NSString alloc] initWithString:@"http://..."];

And don’t forget to release it int the dealloc method

-(void)dealloc
{
    [site_domain release];
}