Question

I am simply trying to subclass UIWindow so that I can intercept some notifications. Along with the code listed below I also go into MainWindow.xib and update the UIWindow object to my sub class. It loads up fine, problem is the tabs on my tab bar are unresponsive (in the example below I only added one tab, but in my app I have multiple (that’s not the problem)). Can anyone see what I might be doing wrong? Thanks.

UISubclassedWindow.h

#import <UIKit/UIKit.h>

@interface UISubclassedWindow : UIWindow 
{

}

@end

UISubclassedWindow.m

    #import "UISubclassedWindow.h"

    @implementation UISubclassedWindow

- (id) initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) 
    {
        NSLog(@"init");
    }
    return self;
}

    - (void)makeKeyAndVisible
    {
        [super makeKeyAndVisible];
        NSLog(@"makeKeyAndVisible");
    }

    - (void)becomeKeyWindow
    {
        [super becomeKeyWindow];
        NSLog(@"becomeKeyWindow");

    }

    - (void)makeKeyWindow
    {
        [super makeKeyWindow];
        NSLog(@"makekeyWindow");
    }

    - (void)sendEvent:(UIEvent *)event
    {
    }

    - (void)dealloc 
    {
        [super dealloc];
    }

    @end

AppDelegate.h

import

@class UISubclassedWindow;

@interface My_AppAppDelegate : NSObject <UIApplicationDelegate> 
{
    UISubclassedWindow *window;
}

@property (nonatomic, retain) IBOutlet UISubclassedWindow *window;

@end

AppDelegate.m

@synthesize window;

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions 
{   
    UITabBarController *tabBarController = [[UITabBarController alloc] init];

    MainViewController *mainViewController = [[MainViewController alloc] initWithViewType: 0];
    UINavigationController *mainNavigationController = [[UINavigationController alloc] initWithRootViewController: mainViewController];
    mainNavigationController.title = @"Main";
    [[mainNavigationController navigationBar] setBarStyle: UIBarStyleBlack];

    [tabBarController setViewControllers: [NSArray arrayWithObjects: mainNavigationController,  nil]];

    [self.window setRootViewController: tabBarController];
    [self.window makeKeyAndVisible];

    [mainViewController release];
    [mainNavigationController release];
    [tabBarController release];

    return YES;
}

Answer 1

The problem was I was including the UIWindows – (void)sendEvent:(UIEvent *)event method, but wasn’t calling super on it. I called super on it and everything was fixed.