In my application, the navigation concept is more or less the same as the iOS7 applications for Facebook / Instagram:
A ContainerViewController with 5 tabs, each of which has a NavigationController, like rootViewController.
Now I'm trying to reproduce the navigationBar behavior on Facebook for the rootViewController of the first tab of the navigationController (-> the first "real" VC, not just a container like NavVC).
I managed to implement hide / show navigationBar using delegation methods UIScrollView (scrollViewDidScroll :, scrollViewWillBeginDragging :, scrollViewDidEndDragging :)
Note: frame.origin.y of the navigation bar is manually shifted to the top. I do not use
[self.navigationController setNavigationBarHidden:]
So far, this is really flattened. But I ran into two problems: I cannot come up with a solution for:
When I click the new ViewController on the first tab navigation stack, the navigation bar remains hidden.
To solve this problem, I do it in the pressed ViewController viewWillAppear: method:
CGRect navBarFrame = self.navigationController.navigationBar.frame;
navBarFrame.origin.y = 20.0;
[UIView animateWithDuration:0.3 animations:^{
[self.navigationController.navigationBar setFrame:navBarFrame];
}];
This animation is correctly chosen for the pushController animation for iOS.
Problem: when I jump back (jumping out while holding VC), the navigation bar remains visible.
I managed to solve this problem by creating and setting some properties on both ViewControllers, but this is a huge mess and it will become even more hacked, because I have to push 3 or 4 different types of ViewController into this navigation stack.
My question (finally -.-):
How can I achieve pushing / popping behavior similar to Facebook?
, : , "" navigationBar , pushController .
. " , " iOS7.
: , viewController scrollDelegate ?
, UIScrollView Delegate.
:)