Picker App Crashes When Switching Views

[pcgeek]

I'm working on an app that is setup as follows:

• Tab Bar Controller with four tabs
• All four tabs are setup as navigation controllers
• The tab bar and navigation controller are programatically setup in the app delegate.
• Three of the four tabs utilize table views (hence the navigation)
• The fourth tab is setup just as a view with a picker with labels (also is a navigation controller) and an 'info' button in the top right of the navigation pane.

The 'info' button is setup as follows:

- (void)viewDidLoad 
{
	[super viewDidLoad];
	
	// Create an info page button
	UIButton *infoButton = [UIButton buttonWithType:UIButtonTypeInfoLight];
	[infoButton addTarget:self action:@selector(modalViewAction:) forControlEvents:UIControlEventTouchUpInside];
	UIBarButtonItem *modalButton = [[UIBarButtonItem alloc] initWithCustomView:infoButton];
	[self.navigationItem setRightBarButtonItem:modalButton animated:YES];
	[modalButton release];
	[infoButton release];
	[self updateLabels];
}

// Here is the selector action

- (IBAction)modalViewAction:(id)sender
{
	if (self.myInfoViewController == nil)

        self.myInfoViewController = [[[MyInfoViewController alloc] initWithNibName:@"MyInfoView" bundle:nil] autorelease];
	
	[self.navigationController presentModalViewController:self.myMotorStartersInfoViewController animated:YES];
}

In the viewDidLoad I setup the arrays.

In the 'second view' that the info button navigates to I using the following with the 'done' button.

- (IBAction)dismissAction:(id)sender
{
	[self.parentViewController dismissModalViewControllerAnimated:YES];
}

The issue I am having is the following:

Scenario 1

I run the app, go to the tab with the picker and change the picker values to update the labels on the view. This works ok. If I select the info button, the app crashes.

The error I am getting is:

*** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[NSCFArray objectAtIndex:]: index (13897984) beyond bounds (2)'

Scenario 2

I select the 'info' button in this tab, it opens to another view and I select the 'okay' button to go back to the picker view. Once I go back to the picker view the app crashes after moving the picker wheels. I have the picker setup to update on view did appear like this.

- (void)viewDidAppear:(BOOL)animated 
{
	// These are the default values for the picker when the app starts
	[myPicker selectRow:0 inComponent:0 animated:YES];
	[myPicker selectRow:0 inComponent:0 animated:YES];
}

Do you think this is an issue with releasing objects, etc?