从应用程序委托呈现模式视图不平衡的调用以开始/结束外观

Question

This is the code I'm using to present a modal view when the app first starts

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

self.window.rootViewController = self.tabBarController;
[self.window makeKeyAndVisible];


Security *security = [[Security alloc] initWithNibName:@"Security" bundle:nil];
[self.tabBarController.selectedViewController presentModalViewController:security animated:YES];
[security release];

return YES;

}

This is what the log says

Unbalanced calls to begin/end appearance transitions for <UITabBarController: 0x171320>.

Is there a better way to achieve this?

Also I have this method in my app delegate

    -(BOOL)tabBarController:(UITabBarController *)tabBarController shouldSelectViewController:(UIViewController *)viewController {

    if (viewController == [tabBarController.viewControllers objectAtIndex:2]) {

        //The Log Out tab locks the app by presenting a modalviewcontroller that can't be dismissed unless there is a password.
        Security *security = [[Security alloc] initWithNibName:@"Security" bundle:nil];
        [self.tabBarController presentModalViewController:security animated:YES];
        [security release];
        return NO;

    } else {

    return YES;
    }
}

Basically one of the options on my tabbarcontroller is a logout button. The above code works fine and doesn't throw a warning to the log.

Answer 1

Why are you presenting it from your tab bar controller? Assuming your above code is from a UIViewController, try

[self presentModalViewController:security animated:YES];

or

[self.navigationController presentModalViewController:security animated:YES];