CODEWITHSUNDEEP
iphoneobjective-ciosuiviewcontroller
iOSDev
iOSDev

Reputation: 3617

how to open different view controllers on app launch in iphone app?

I have two views - view1 and view2. View1 is my default viewcontroller loaded from mainwindow.xib. Depending on some condition checking, i want to load either View1 or View2, say if user registration is not done, load sign up screen for user, else go to default view controller.

How and where do I check this condition?

Please help.

Thanks in advance.

Upvotes: 1

Views: 3056

Answers (3)

ColdLogic
ColdLogic

Reputation: 7275

In your app delegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions  {
     if(needToLogin) {
         [self setViewController:[[[ViewController2 alloc] initWithNib:@"Login View"] autorelease]];

     }

     [window setRootViewController:viewController];
}

This will switch your view controller to the view2 view controller if needToLogin returns true. Otherwise, it will go to the default controller specified in mainwindow.xib

Another method (since you probably need the main view controller anyway) would be to present the login view controller if its needed.

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions  {
     if(needToLogin) {
         ViewController2 *loginVC = [[[ViewController2 alloc] initWithNib:@"LoginViewController"] autorelease];

         [[self viewController] presentViewController:loginVC animated:NO];
     }

     [window setRootViewController:viewController];
}

Note, you will have to call [self dismissViewControllerAnimated:YES] to get rid of the login view.

Edit: Respones from OP:

I tried first one,

if(loginflag){ 
     [self setViewController:[[[SignUpViewController alloc] initWithNibName:@"SignUpViewController" bundle:nil] autorelease]]; 
} 

[self.window setRootViewController:self.signUpView];

Try this instead:

if(loginFlag) {
     [self setViewController:[[[SignUpViewController alloc] initWithNibName:@"SignUpViewController" bundle:nil] autorelease]];
}

[[self window] setRootViewController:[self viewController]];

Upvotes: 3

gschandler
gschandler

Reputation: 3208

If you are just planning on bringing up a sign-up screen if the user registration is needed, why not stick with the default view controller, but at -applicationDidBecomeActive: present a modal view controller for the sign up view?

Upvotes: 1

5StringRyan
5StringRyan

Reputation: 3634

With the information given, you could just create a flag in the AppDelegate that can be persisted based on the user registration is complete or not. Then in the "didFinishLaunching..." method you could check this flag and load the the proper view based on this.

Upvotes: 0

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