ios9 Application windows are expected to have a root view controller

Question

After launch I have a crash:

2015-11-13 17:47:50.744 app[18380:611105] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Application windows are expected to have a root view controller at the end of application launch'

I've read other questions with ios9 and root view controller and now my appdelegate:

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

    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    MainViewController *main = [[MainViewController alloc] initWithNibName:@"MainViewController" bundle:nil];

    NSArray *windows = [[UIApplication sharedApplication] windows];
    for(UIWindow *window in windows) {
        NSLog(@"window: %@",window.description);
        if(window.rootViewController == nil){
            UIViewController *vc = [[UIViewController alloc]initWithNibName:nil bundle:nil];
            window.rootViewController = vc;
        }
    }

    self.window.rootViewController = main;
    [self.window setRootViewController:main];
    [self.window makeKeyAndVisible];

    return YES;
}

Unfortunately the problem is still there.

`self.window.rootViewController = main; [self.window setRootViewController:main];` are the same. You are using `for(UIWindow *window in windows) {` for what? — tuledev, Nov 13 '15 at 10:04
I know the same thing. I just showed that tried all the options. — suzrik, Nov 13 '15 at 10:05
for(UIWindow *window in windows) { it is one of the solutions that has been here in other question. — suzrik, Nov 13 '15 at 10:06
Did you check this solution? http://stackoverflow.com/questions/7520971/applications-are-expected-to-have-a-root-view-controller-at-the-end-of-applicati — tuledev, Nov 13 '15 at 10:12
I've moved all code from viewdidload to viewdidappear and now all works fine. Big thanks! I was trying to show alert on display of a view before it actually came on screen. It works in earlier version, but crush in ios9. Thanks again! — suzrik, Nov 13 '15 at 10:22

score 0 · Answer 1 · answered Nov 14 '15 at 00:34

Maybe try getting rid of the loops:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    UIWindow *window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    window.backgroundColor = [UIColor whiteColor];

    MainViewController *main = [[MainViewController alloc] initWithNibName:@"MainViewController" bundle:nil];
    window.rootViewController = main;
    self.window = window;

    [window makeKeyAndVisible];
    return YES;
}

ios9 Application windows are expected to have a root view controller

1 Answers1