Push view not pushing UIViewController from single view based application

2
votes

I choose the project template as "Single View" .I am trying to push a detail view(UIViewController) on the button click.Button action is firing properly and executing the code [self navigatingController] push......My code is As: 

MapDetailViewController *mapDetailViewController = [[MapDetailViewController alloc] init];
    [self.navigationController pushViewController:mapDetailViewController animated:YES];
    NSLog(@"self.navigation is as %@",self.navigationController);

self.navigationController is null.So i tried to alloc init a local variable of type Navigation Controller and also the variable was able to be non-null(some hex value), still i was unable to push the mapDetailView.
what i am thinking is that i have choosen the wrong template(view based).Should i choose the Navigation-based(Master-detail).Well the below auto generated code is of application delegate:

self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
// Override point for customization after application launch.
self.viewController = [[[ViewController alloc] initWithNibName:@"ViewController" bundle:nil] autorelease];
self.window.rootViewController = self.viewController;
[self.window makeKeyAndVisible];
return YES;

Should some changes be made here for navigation controller?
Any Suggestion?

1
iphoneuiviewcontrolleruinavigationcontroller

1 Answers

5
votes

Your problem is that you don't even have a navigation controller to do the pushing. Change your code to this:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
    self.viewController = [[[ViewController alloc] initWithNibName:@"ViewController" bundle:nil] autorelease];
    UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:self.viewController];
    self.window.rootViewController = nav;
    [self.window makeKeyAndVisible];
    return YES; 
}