iOS9更新后，应用程序崩溃，无法连接到Internet

Question

Can anyone help me out here, my app is crashing in iOS9, it was fine 2 weeks ago. New to Objective-C, need help.

When running the app in xCode I get this message

Terminating app due to uncaught exception'NSInternalInconsistencyException', reason: 'Application windows are expected to have a root view controller at the end of application launch'

Answer 1

Your app doesn't have a root view controller. Select the View Controller in the storyboard which is your entry point. Then in the Attributes Inspector check the box for Is Initial View Controller .

OR

in application didFinishLaunchingWithOptions method

UIViewController *vC = [[UIStoryboard storyboardWithName:@"Main" bundle:nil] instantiateViewControllerWithIdentifier:@"viewControllerID"]; 

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

return YES;

If you are not using storyboards just instantiate the view controller with the init method.