viewDidAppear called twice during state restoration

[AndriyGo]

In the center view controller (and, probably, others as well) viewDidAppear method is called twice when restoring state.

1. The first call is triggered by

[self.centerViewController beginAppearanceTransition:YES animated:NO];
[self.centerViewController endAppearanceTransition];

in the (setCenterViewController: animated:) method of MMDrawerController.

2. Second time it is called from viewWillAppear/viewDidAppear methods of MMDrawerController due to

a) [self.centerViewController beginAppearanceTransition:YES animated:animated]; in viewWillAppear
b) [self.centerViewController endAppearanceTransition]; in viewDidAppear

If the state is not getting restored, centre view controller's viewDidAppear is not called due to (1) and is only called due to (2).

I have tested and this is also the case with KitchenSink. I'd be happy to find a solution for this and issue a pull request, but I am stuck trying to understand why (1) calls viewDidAppear ONLY when restoring state.

[ronak2121]

+1 This has been a major pain for our app to the point of us dumping MMDrawerController and writing our own Left Nav Controller. Would really like not to have to do that; but the powers that be are forcing our hand.

Any help on this would be appreciated.

[pronebird]

A sporadic idea: maybe we should check self.view.window to see if drawer is off-screen (not displayed yet) and ignore those appearance events, and drawer will have a chance to forward appearance events on viewWillAppear:.

[AndriyGo]

Both #271 and #268 fix this issue. If I was to choose which one is better, I would choose #271 as it does not introduce another property and is thus a bit more elegant. It also fixes the double decodeObject call and potential reassignment of the same side controllers. Hope it will find its way into the next release

[ronak2121]

Is there any hope these fixes will actually get merged in?

[x2on]

👍 please merge it!

[jerydarkside]

👍 I have this problem too and it is pretty annoying.

[kcharwood]

Sorry for being MIA...

Work and Life get in the way of fun side projects :)

I'll try and pull together another release here in the next week.

🍻

[kcharwood]

Closing. Take conversation to #271

[gotitplatform]

I have a MMDrawerController that is pushed onto a UINavigationController stack not animated and I get multiple calls to viewWillAppear and viewDidAppear

UPDATE:
I think I found the issue. I had a UINavigationController displayed behind a modal UIViewController. I was calling push (not animated) after I made an animated call to dismiss the modal. Moving the push (not animated) before calling dismiss (animated) on the modal achieved the results I was looking for and makes sense as to what was happening.

TLDR: Nevermind...