Tab Bar Controller & Navigation Controller - View pushed not displayed

[cphilc]

Hi all,

I have a problem to push a view in a Navigation Controller embedded in a Tab Bar Controller. Here is the structure of the app:

- App hosts the Tab Bar and a Delegate
- One of the view controllers stacked in the Tab Bar is a Navigation Controller
- This Nav Controller hosts the Nav Bar and delegate to File's owner > FirstViewController class & FirstView.xib
- This xib contains a tableview. On an item click, I would like to push a new view to the Nav Controller > FirstViewDetailsController & FirstViewDetails.xib
- FirstViewDetails is a simple UIview.

>> The code in the click event method in FirstViewController:
NSString *nibName = @"FirstViewDetails";
UIViewController *targetViewController = [[FirstViewDetailsController alloc] initWithNibName:nibName bundle:[NSBundle mainBundle]];

[self.navigationController pushViewController:targetViewController animated:YES];

>> The code in nibNameOrNil method in FirstViewDetailsController:
if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) {
NSLog(@"First View Details initNIB %@", nibNameOrNil);
// Custom initialization
}

RESULT:
- First View Details initNIB FirstViewDetails is displayed in log window => event is fired correctly and FirstViewDetails seems to be constructed correctly
- The UIView FirstViewDetails is not stacked nor displayed

Thanks for your help.

[Jagged]

did you add your navcontroller to the subviews of the parentview?

[window addSubview:navigationController.view];

[cphilc]

Originally Posted by Jagged

did you add your navcontroller to the subviews of the parentview?

[window addSubview:navigationController.view];

The FirstView (navigationcontroller) is well displayed when I click on the tab bar item.
=> the navigationcontroller view is well attached (to me) ???

The issue is when I click on an table item in FirstView in order to display the FirstViewDetail (regular UIView).
The FirstViewDetail viewDidLoad is never called

I can't understand because I don't [window addSubview:navigationController.view] anywhere.
Where I'm supposed to add it?

Phil

[Jagged]

in


- (void)applicationDidFinishLaunchingUIApplication *)application
{
...
...
// Configure and show the window
[window addSubview:[navigationController view]];
[window makeKeyAndVisible];
...
...
}


this is in the <AppName>AppDelegate.m

[cphilc]

Originally Posted by Jagged

in


- (void)applicationDidFinishLaunchingUIApplication *)application
{
...
...
// Configure and show the window
[window addSubview:[navigationController view]];
[window makeKeyAndVisible];
...
...
}


this is in the <AppName>AppDelegate.m

The navigation controller is not created at app launching but when the user clicks on a specific tab. AppDelegate manages only the tab bar.

On the other hand, FirstView manages the navigation bar.

I can't understand, please help ...

[jsd]

You almost certainly don't have a self.navigationController property. In your code, add the line as shown below:

NSString *nibName = @"FirstViewDetails";
UIViewController *targetViewController = [[FirstViewDetailsController alloc] initWithNibName:nibName bundle:[NSBundle mainBundle]];

// add this here:
NSLog(@"my nav controller is: %@", self.navigationController);
[self.navigationController pushViewController:targetViewController animated:YES];

Run it. I bet it will print null. You need to instantiate the nav controller somewhere. Are you doing everything in code or using nib files?

[cphilc]

Originally Posted by jsd

You almost certainly don't have a self.navigationController property. In your code, add the line as shown below:

NSString *nibName = @"FirstViewDetails";
UIViewController *targetViewController = [[FirstViewDetailsController alloc] initWithNibName:nibName bundle:[NSBundle mainBundle]];

// add this here:
NSLog(@"my nav controller is: %@", self.navigationController);
[self.navigationController pushViewController:targetViewController animated:YES];

Run it. I bet it will print null. You need to instantiate the nav controller somewhere. Are you doing everything in code or using nib files?

In finally found the issue and fixed it.
In fact, I centralized tabbar & navigation controllers in AppDelegate.
Because I did make a link betweed the NavigationController of FirstView and this AppDelegate, it didn't work.

I'd like to thank you for your time and help.

Next time, I will do more things by code, NIB files and Interface Builder are a little bit tricky ... even, when you are used, it's quite powerful.

Phil

[abiz]

Originally Posted by cphilc

In finally found the issue and fixed it.
In fact, I centralized tabbar & navigation controllers in AppDelegate.
Because I did make a link betweed the NavigationController of FirstView and this AppDelegate, it didn't work.

I'd like to thank you for your time and help.

Next time, I will do more things by code, NIB files and Interface Builder are a little bit tricky ... even, when you are used, it's quite powerful.

Phil

Hi Phil-
I am new to iPhone development too. I am having the same problem which you described above. Can you please let me know how you fixed it?

Thanks for your help in advance.

Regards-
Siri