create navigationbar dynamatically in ios - iphone

Question

This is the static navigation bar how i set in my project , but want to do in dynamic way, here is the two type of code...
viewsArray = [[NSArray alloc] init];
AfterloginViewController *toolsnavigation = [[AfterloginViewController alloc] init];
toolsnavigation.tabBarItem.image = [UIImage imageNamed:#"cool.png"];
[toolsnavigation setTitle:#"Tools"];
UINavigationController *nav0 = [[UINavigationController alloc] initWithRootViewController:toolsnavigation];
MapViewController *myridenavigation = [[MapViewController alloc] init];
myridenavigation.tabBarItem.image = [UIImage imageNamed:#"cool.png"];
[myridenavigation setTitle:#"Login"];
UINavigationController *nav1 = [[UINavigationController alloc] initWithRootViewController:myridenavigation];
viewsArray = [NSArray arrayWithObjects:nav0,nav1,nav2,nav3,nav4,nav5,nav6,nav7,nav8, nil];
tabbarController = [[UITabBarController alloc] init];
[tabbarController setViewControllers:viewsArray];
self.window.rootViewController = tabbarController;
Now i am getting data from the URL and want to assign it as dynamically navigation item. But i m puzzeled now, any idea how to do it.
NSString *loginstring = [NSString stringWithFormat:#"%#nvgationarray.php",mydomainurl];
NSMutableData *dataURL = [NSData dataWithContentsOfURL: [ NSURL URLWithString: loginstring]];
NSDictionary *allData = [NSJSONSerialization JSONObjectWithData:dataURL options:0 error:nil];
int i = 0;
for(NSDictionary *stat in allData)
{
NSString *ssprst = [stat objectForKey:#"tab_type"];
NSString *ssprst1 = [stat objectForKey:#"tab_name"];
NSString *ssprst2 = [stat objectForKey:#"tab_id"];
NSString *ssprst3 = [stat objectForKey:#"icon"];
NSLog(#"all data ===== :::: %# %# %# %#",ssprst,ssprst1,ssprst2,ssprst3);
NSLog(#"++++++++++++++++++++++++++++++++++++++++++++++");
AbcViewController *myridenavigation = [[AbcViewController alloc] init];
myridenavigation.tabBarItem.image = [UIImage imageNamed:#"cool.png"];
[myridenavigation setTitle:#"Login"];
UINavigationController *nav1 = [[UINavigationController alloc] initWithRootViewController:myridenavigation];
i++;
}

Answer 1

if you want to retain memory UINavigationController . I suggest you hold it in NSMutableArray.
In header file
#property(nonatomic, strong) NSMutableArray* arrayNavigationCont;
In implementation file
#synthesize arrayNavigationCont = _arrayNavigationCont;
do not forget also to init array in somewhere relevant like viewDidLoad
self.arrayNavigationCont = [[NSMutableArray alloc] init];
In your method
...
for(NSDictionary *stat in allData)
{
...
AbcViewController *myridenavigation = [[AbcViewController alloc] init];
myridenavigation.tabBarItem.image = [UIImage imageNamed:#"cool.png"];
[myridenavigation setTitle:#"Login"];
UINavigationController *nav1 = [[UINavigationController alloc] initWithRootViewController:myridenavigation];
[self.arrayNavigationCont addObject:nav1]
i++;
}
Later you can access you navigationConts somewhere again
for(int i = 0; i < [self.arrayNavigationCont count]; i++)
{
UINavigationController *nav1 = [self.arrayNavigationCont objectAtIndex:i];
//do sth with nav1 to your like
}