iPhone splash screen fade out animation

AppDelegate.m

// in application:didFinishLaunchingWithOptions: in app delegate

// before [window makeKeyAndVisible];
UIImageView *splashView = [[UIImageView alloc] initWithFrame:CGRectMake(0,0, 320, 480)];
splashView.image = [UIImage imageNamed:@"background.png"];

// after [window makeKeyAndVisible];
splashView = [[UIImageView alloc] initWithFrame:CGRectMake(0,0, 320, 480)];
splashView.image = [UIImage imageNamed:@"Default.png"];
[window addSubview:splashView];
[window bringSubviewToFront:splashView];
    
[UIView animateWithDuration:0.5 animations:^{
    [splashView setAlpha:0.0];
} completion:^(BOOL finished) {
    [splashView removeFromSuperview];
}];