Smooth transition from launch image to main view

Question

Is it possible to implement a smooth transition when the app loads, from the launch image to the first view?

The default behavior is on/off, with an immediate change

Answer 1

Modified Dancreek's answer to do it all in AppDelegate application:didFinishLaunchingWithOptions. I like this because the code is guaranteed to only run at app start, and it's not polluting any of the view controllers.

It's very simple:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

    // set up your root view and stuff....

    //.....(do whatever else you need to do)...

    // show the main window, overlay with splash screen + alpha dissolve...

        UIImageView *splashScreen = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"Default.png"]];
    [self.window addSubview:splashScreen];        
    [self.window makeKeyAndVisible];

    [UIView animateWithDuration:0.3 animations:^{splashScreen.alpha = 0.0;}
                     completion:(void (^)(BOOL)) ^{
                             [splashScreen removeFromSuperview];
                     }
    ];
}