> On Nov 7, 2015, at 11:31 PM, Diederik Meijer <diede...@tenhorses.com> wrote:
>
> Thank you David,
>
> I forgot to mention that one of them is a UISplitViewController and - unless
> this has changed - that one can not be presented modally.
I’m not aware of any particular reason why a split view controller could not be
presented modally. Alternatively you could present the other view controller
with no animation and then dismiss it when you want to reveal the split view
controller.
> It is for this reason that I want to switch the window’s rootViewController.
> Otherwise, a plain presentViewController would definitely make a lot more
> sense :-)
>
> This is what I actually found briefly after sending the question (method
> edited for my app’s specifics and original code found not in a separate
> method).
>
> Method added to appDelegate:
>
> -(void)switchWindowRootVCTo:(NSString *)newVCString {
> id newVC = nil;
> if ([newVCString isEqual:@"UISplitViewController"]) newVC = self.svc;
> else if ([newVCString isEqual:@"THWelcomeVC"]) newVC = self.wvc;
> self.window.rootViewController = newVC;
> [UIView transitionWithView:self.window
> duration:0.50
> options:UIViewAnimationOptionTransitionCrossDissolve
> animations:^{
> self.window.rootViewController = newVC;
> }
> completion:nil];
> }
>
> So both the old and the new root VC are properties of the appDelegate
> (self.svc and self.wvc respectively) and they are both initialized in
> applicationDidiFinishLaunching.
>
> Each of them can call the above method of the app delegate and trigger the
> switch.
>
>
> Best regards,
>
>
>
> Diederik
>
>
>
>> Op 8 nov. 2015, om 04:36 heeft David Duncan <david.dun...@apple.com
>> <mailto:david.dun...@apple.com>> het volgende geschreven:
>>
>>>
>>> On Nov 7, 2015, at 1:30 PM, Diederik Meijer <diede...@tenhorses.com
>>> <mailto:diede...@tenhorses.com>> wrote:
>>>
>>> Dear list,
>>>
>>> Is it possible to change an iOS app window’s rootViewController at runtime
>>> and have a fade animation between the two states happen?
>>
>> Not trivially, but you can do this trivially by presenting your
>> “replacement” view controller modally, which is also the more supported path
>> (by far).
>>
>>>
>>> Obviously there is no modal or push presentation, the view is just replaced
>>> by a new one. For this reason a fade between the two would be nice.
>>>
>>> This is for iOS 8 and up, coding in Objective-C.
>>>
>>>
>>> Many thanks,
>>>
>>>
>>>
>>> Diederik
>>>
>>>
>>>
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>>
>> --
>> David Duncan
>
--
David Duncan
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