iPhone how to enable or disable UITabBar
- by Dean Wagstaff
I have a simple app with a tab bar which based upon user input disables one or more of the bar items. I understand I need to use a UITabBarDelegate which I have tried to use. However when I call the delegate method I get an uncaught exception error [NSObject doesNotRecognizeSelector]. I am not sure I am doing this all right or that I haven't missed something. Any suggestions.
What I have now is the following:
WMViewController.h
import
define kHundreds 0
@interface WMViewController : UIViewController {
}
@end
WMViewController.m
import "WMViewController.h"
import "MLDTabBarControllerAppDelegate.h"
@implementation WMViewController
(IBAction)finishWizard{
MLDTabBarControllerAppDelegate *appDelegate = (MLDTabBarControllerAppDelegate *)[[UIApplication sharedApplication] delegate];
[appDelegate setAvailabilityTabIndex:0 Enable:TRUE];
}
MLDTabBarControllerAppDelegate.h
import
@interface MLDTabBarControllerAppDelegate : NSObject {
}
(void) setAvailabilityTabIndex: (NSInteger) index Enable: (BOOL) enable;
@end
MLDTabBarControllerAppDelegate.m
import "MLDTabBarControllerApplicationDelegate.h"
import "MyListDietAppDelegate.h"
@implementation MLDTabBarControllerAppDelegate
(void) setAvailabilityTabIndex: (NSInteger) index Enable: (BOOL) enable
{
UITabBarController *controller = (UITabBarController *)[[[MyOrganizerAppDelegate getTabBarController] viewControllers ] objectAtIndex:index];
[[controller tabBarItem] setEnabled:enable];
}
@end
I get what appear to be a good controller object but crash on the [[controller tabBarItem]setEnabled:enable];
What am I missing...
Any suggestions
Thanks,
