Launching into portrait-orientation from an iPhone 6 Plus home screen in landscape orientation results in wrong orientation

Question

The actual title for this question is longer than I can possibly fit:

Launching an app whose root view controller only supports portrait-orientation but which otherw

Answer 1

I'm in the same situation, and doing [self.window setFrame:...] doesn't work for me.

Adding the following at the end of application:didFinishLaunchingWithOptions is the only thing I've found that works. It makes the screen blink and isn't exactly clean and efficient.

I added this at the end of application:didFinishLaunchingWithOptions:

UIViewController *portraitViewController = [[UIViewController alloc] init];
UINavigationController* nc = [[UINavigationController alloc] initWithRootViewController:portraitViewController];
[self.navController presentViewController:nc animated:NO completion:nil];
[self.navController dismissViewControllerAnimated:NO completion:nil];  
[UIViewController attemptRotationToDeviceOrientation];