閉じたいボタンに対して、 - (IBAction)back:(UIButton *)sender { [[self presentingViewController] dismissViewControllerAnimated:YES completion:NULL]; }

この辺でなおる。 Window > Organaizer > Projects > Derived Data > Delete シミュレータを一度終了する

#import "AppDelegate.h" @implementation AppDelegate - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { // Override point for customization after application launch. return YES; }