ios_animated_aplash_screen.m

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.
    [self.window makeKeyAndVisible];

    NSString *assetLocalPath = [[NSBundle mainBundle] pathForResource:@"AnimatedSplashScreen" ofType:@"gif"];
    
    NSURL *assetURL = [[NSURL alloc] initFileURLWithPath:assetLocalPath];
    

    //add the image to the forefront...
    UIImageView *launcherImageView = [[UIImageView alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    //you can download UIImage+animatedGIF here https://github.com/mayoff/uiimage-from-animated-gif
    [launcherImageView setImage: [UIImage animatedImageWithAnimatedGIFURL:assetURL]];
    [self.window addSubview:launcherImageView];
    [self.window bringSubviewToFront:launcherImageView];
    
    
    //set an anchor point on the image view so it opens from the left
    launcherImageView.layer.anchorPoint = CGPointMake(0, 0.5);
    
    //reset the image view frame
    launcherImageView.frame = [[UIScreen mainScreen] bounds];
    
    //animate the open
    [UIView animateWithDuration:1.0/*hiding duration*/
                          delay:3.0/*how much time you want to show the splash*/
                        options:UIViewAnimationOptionCurveEaseInOut
                     animations:^{
                         
                         launcherImageView.layer.transform = CATransform3DRotate(CATransform3DIdentity, -M_PI_2, 0, 1, 0);
                     } completion:^(BOOL finished){
                         
                         //remove that imageview from the view
                         [launcherImageView removeFromSuperview];
                     }];

    
    return YES;
}