XCode 6 UIViewController无法调整大小以填充屏幕

Question

I'm creating an app without Storyboard on XCode 6.4 and when I run the app, no matter which simulator I use, I always get a (320,480) screen.

- (BOOL)application:(UIApplication *)application 
  didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    UIViewController *vc = [[UIViewController alloc] init];
    vc.view.backgroundColor = [UIColor whiteColor];
    self.window.rootViewController = vc;
    [self.window makeKeyAndVisible];
    return YES;
}

Ref img: http://i.stack.imgur.com/hGHmt.png

Already tryed:

vc.view.autoresizingMask = 
             UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;

What should I do to make it fill the whole screen?

Answer 1

I had the same problem, You should set launch image of your app about default-568@2x.png with 640 x 1136 pixel size. More info --> link

Also setting @2x @3x image assest will be good for you.

Answer 2

Add launch screen. It will be solved.

https://developer.apple.com/library/ios/recipes/xcode_help-image_catalog-1.0/chapters/AddingLaunchImagestoanAssetCatalog.html