Re: Crash at iOS App Startup - What Could Have Gone Wrong?
Re: Crash at iOS App Startup - What Could Have Gone Wrong?
- Subject: Re: Crash at iOS App Startup - What Could Have Gone Wrong?
- From: Alex Zavatone <email@hidden>
- Date: Tue, 21 Apr 2015 16:00:23 -0400
On Apr 21, 2015, at 3:43 PM, Michael Crawford wrote:
> It's not stopping in the debugger anymore, but instead of getting my
> navigation controller I'm just getting a black screen.
>
And this points to your first view controller being the problem.
It appears that you now have a nav controller that loads an empty view controller - or nothing at all.
> I think all these problems arose by starting with an app that did not
> use a nav controller, then - incorrectly - refactoring it so it did
> use one. It looks like I left some stale configuration in there.
> When I tried to fix that, that's when I started getting the crashes.
>
> Now I'm backing up, trying to recreate the navigation controller at
> the beginning.
> Michael David Crawford, Consulting Software Engineer
> email@hidden
> http://www.warplife.com/mdc/
>
> Available for Software Development in the Portland, Oregon Metropolitan
> Area.
>
>
> On Tue, Apr 21, 2015 at 12:36 PM, Mike Abdullah <email@hidden> wrote:
>>
>>> On 21 Apr 2015, at 19:13, Michael Crawford <email@hidden> wrote:
>>>
>>> OK I'll set up a git repository, but I'd like to fix this first.
>>>
>>> I think my MainWindow.xib got misconfigured or corrupted, so I made a new one.
>>>
>>> I have a UINavigationController with a custom class inside it called
>>> LifeIPhoneViewController. Inside the latter is a LifeView as well as
>>> some controls - to start and stop the animation etc.
>>>
>>> If I don't assign a root view controller to the initial window I get a
>>> blank white screen as well as an NSLog that informs me that a root
>>> view controller is expected by the end of startup.
>>>
>>> If I assign either the UINavigationController or the
>>> LifeIPhoneViewController to be the window's root view controller I get
>>> a crash.
>>>
>>> I'm going to try replacing the LifeIPhoneViewController with a plain
>>> vanilla UIViewController that doesn't do anything.
>>>
>>> My .xibs are a mess because they evolved organically. What I'd like
>>> to get out of this is not so much a running application as a neatly
>>> designed and implemented one.
>>
>> You're clutching at straws, hoping you can just guess what the problem is. Stop.
>>
>> Xcode is clearly showing you there's an issue, yes? What exactly is that issue? Are you stopping in the debugger? If so, what's the stack trace there? Is there anything in the console?
>>
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