How to push Viewcontroller from rootViewController in iOS - ios

Question

I have 2 ViewController. loginViewControl which sets to rootViewControoler :
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
loginViewControl = [[LoginTab alloc] init];
self.window.rootViewController = loginViewControl;
[self.window makeKeyAndVisible];
return YES;
}
And I create StatusViewController :
*.h
#interface StatusViewController : UIViewController<UITabBarControllerDelegate>
{
IBOutlet UITabBarController *tabBarController;
IBOutlet UIButton *UploadButton;
IBOutlet UIButton *ConvertorButton;
IBOutlet UIButton *CompletedButton;
}
#property (nonatomic, retain) IBOutlet UITabBarController *tabBarController;
#end
Now I want to push StatusViewController from loginViewControl(rootviewcontroller).I used below code but it not work.
- (IBAction)statusButtonClick:(id)sender;
{
StatusViewController *statusView = [[StatusViewController alloc]init];
[self.navigationController pushViewController:statusView animated:YES];
[statusView release];
}
Do you have any suggestions? Thanks in advance

Answer 1

You not setting UINavigationViewcontroller at the didFinishLaunchingWithOptions of Window's RootViewcontroller, We can't Push a UIViewController without UINavigationViewcontroller
So First Set LoginViewController as a RootViewController of UINavigationViewcontroller like Bellow:-
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
loginViewControl = [[YourLoinViewcontroller alloc] initWithNibName:#"YourLoinViewcontroller" bundle:nil];
UINavigationController *objNavigationController=[[UINavigationController alloc]initWithRootViewController:loginViewControl];
self.window.rootViewController = objNavigationController;
[self.window makeKeyAndVisible];
return YES;
}
EDIT
Connect your StatusViewcontroller's view with File owner like bellow:-
your push method like this:-
- (IBAction)statusButtonClick:(id)sender;
{
StatusViewController *statusView = [[StatusViewController alloc]initWithNibName:#"StatusViewController" bundle:nil];
[self.navigationController pushViewController:statusView animated:YES];
}

Answer 2

Unless your login view controller is a navigation controller, self.navigationController in statusButtonClick will return nil and so this won't work.
Maybe you can try:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
loginViewControl = [[LoginTab alloc] init];
self.window.rootViewController = [[UINavigationController alloc] initWithRootViewController:loginViewControl];
[self.window makeKeyAndVisible];
return YES;
}
This will enclose a loginViewController in a navigationController which will permit you to push another viewController in the navigationController's stack.

Answer 3

- (IBAction)statusButtonClick:(id)sender; {
// If used StoryBoard
UIStoryboard *story=[UIStoryboard storyboardWithName:#"MainStoryboard" bundle:nil];
StatusViewController *statusView = [story instantiateViewControllerWithIdentifier:#"StatusViewController"];
[self.navigationController pushViewController:statusView animated:YES];
// If used XIB
StatusViewController *statusView = [[StatusViewController alloc]initWithNibName:#"StatusViewController" bundle:nil];
[self.navigationController pushViewController:statusView animated:YES]; }