Is there a way to use presentViewController animation in transitionWithView? - ios

Question

I am using transitionWithView to have an animation when switching root view controller, but the animation options pvorided in UIViewAnimationOptions parameter does not have the animation like the presentViewController animation.
Is there a simple way to do it? Or how do I write an animation exactly the same as presentViewController animation?
Here's the animation I am using:
if (animated) {
[UIView transitionWithView:self.window duration:0.3
options:UIViewAnimationOptionTransitionFlipFromLeft
animations:^{
weakSelf.window.rootViewController = weakSelf.loginNavigationController;
}
completion:^(BOOL finished) {
}];
}

Answer 1

Here's how I do something similar in one of my apps.
I don't try to do this while changing root view controllers. Instead, I have one root view controller that is always there. I make this a custom parent view controller. Its child view controller looks like the root view controller because it occupies the whole window.
Now, when I replace the child view controller, I call transitionFromViewController:toViewController:duration:options:animations:completion:. This has the advantage that I can write my own animation.
As you can see, it is then trivial to have the animation be a slide up from the bottom; you are in complete control of how the view animates into place:

Answer 2

I follow matt's suggestion, made below code change:
first in didFinishLaunchingWithOptions:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
...
// the container view controller
self.window.rootViewController = [[UIViewController alloc] init];
if (!SharedInstance.accessToken) {
self.loginNavigationController = [self getNewLoginNaivigationController];
[self.window.rootViewController addChildViewController:self.loginNavigationController];
[self.window.rootViewController.view addSubview:self.loginNavigationController.view];
[self.loginNavigationController didMoveToParentViewController:self.window.rootViewController];
} else {
self.rootHomeViewController = [self getNewRootHomeController];
self.AppNavigationController = [self getNewAppNavigationControllerFromRootHomeViewController:self.rootHomeViewController];
[self.window.rootViewController addChildViewController:self.rootHomeViewController];
self.AppNavigationController.delegate = nil;
[self.window.rootViewController.view addSubview:self.rootHomeViewController.view];
[self.rootHomeViewController didMoveToParentViewController:self.window.rootViewController];
}
}
Then when I want to change it:
-(void)displayHomeViewControllerWithAnimation:(BOOL)animated {
if (!self.rootHomeViewController) {
self.rootHomeViewController = [self getNewRootHomeController];
self.AppNavigationController = [self getNewAppNavigationControllerFromRootHomeViewController:self.rootHomeViewController];
self.AppNavigationController.delegate = nil;
[self.window.rootViewController addChildViewController:self.rootHomeViewController];
}
// animation
__weak typeof(self) weakSelf = self;
[self.loginNavigationController willMoveToParentViewController:nil];
if (animated) {
[self.window.rootViewController transitionFromViewController:self.loginNavigationController
toViewController:self.rootHomeViewController duration:0.3
options:UIViewAnimationOptionCurveLinear animations:^{
// do animation here
} completion:^(BOOL finished) {
[weakSelf.rootHomeViewController didMoveToParentViewController:weakSelf.window.rootViewController];
[weakSelf.loginNavigationController removeFromParentViewController];
weakSelf.loginNavigationController = nil;
}];
} else {
[weakSelf.rootHomeViewController didMoveToParentViewController:weakSelf.window.rootViewController];
[weakSelf.loginNavigationController removeFromParentViewController];
weakSelf.loginNavigationController = nil;
}
}