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

I had the same issue when launching our app in landscape on an iPhone 6 Plus.

Our fix was to remove landscape supported interface orientations from the plist via project settings:

and implement application:supportedInterfaceOrientationsForWindow: in the app delegate:

- (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window {    return UIInterfaceOrientationMaskAllButUpsideDown;}

Apparently the information in your plist is to specify what orientations your app is allowed to launch to.

Setting the statusBarOrientation of the UIApplication seems to work for me. I placed it in the application:didFinishLaunchingWithOptions: method in the app delegate.

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{    application.statusBarOrientation = UIInterfaceOrientationPortrait;    // the rest of the method}

This appears to be a bug in iOS 8 when using a UITabBarController as a root view controller. A workaround is to use a mostly vanilla UIViewController as the root view controller. This vanilla view controller will serve as the parent view controller of your tab bar controller:

///------------------------/// Portrait-Only Container///------------------------@interface PortraitOnlyContainerViewController : UIViewController@end@implementation PortraitOnlyContainerViewController- (NSUInteger)supportedInterfaceOrientations {    return UIInterfaceOrientationMaskPortrait;}@end// Elsewhere, in app did finish launching ...PortraitOnlyContainerViewController *container = nil;container = [[PortraitOnlyContainerViewController alloc]               initWithNibName:nil               bundle:nil];[container addChildViewController:self.tabBarController];self.tabBarController.view.frame = container.view.bounds;[container.view addSubview:self.tabBarController.view];[self.tabBarController didMoveToParentViewController:container];[self.window setRootViewController:container];