Re: How To Increment CALayer Retain Count?
Re: How To Increment CALayer Retain Count?
- Subject: Re: How To Increment CALayer Retain Count?
- From: Jeffrey Walton <email@hidden>
- Date: Thu, 07 Apr 2011 16:44:13 -0400
On Thu, Apr 7, 2011 at 8:30 AM, Mike Abdullah <email@hidden> wrote:
> Have you run the static analyser?
Yes - "Other C Flags" are '-g3 -Wall -Wextra' (maximum GCC analysis),
and Clang is On.
> Have you tested using the Zombies Instrument?
I believe so. The executable's environment is "NSZombieEnable = YES"
and "NSAutoreleaseFreedObjectCheckEnabled = YES".
How do experienced folks layout their interfaces? Is Interface Builder
used? I seem to recall Mark and LeMarche stating that Apple recommends
IB. But I seem to be having chronic problems with it (3.2.5 and
3.2.6).
> On 7 Apr 2011, at 12:15, Jeffrey Walton wrote:
>
>> Hi All,
>>
>> I have a UIViewController as follows. Its just an "About Box", with a
>> navigation bar and button (to cancel) and two labels.
>>
>> The controller was built with Interface Builder. The Navigation Bar
>> and two labels are IBOutlets. According to IB, they are properly
>> connected. I did not know what to connect the Navigation Items outlet
>> to, so they are currently unconnected (formerly, they were connected
>> to File's Owner which did not help).
>>
>> + File's Owner
>> + First Responder
>> + View
>> + Navigation Bar
>> + Navigation Item (Title)
>> + Bar Button
>> + Label 1
>> + Label 2
>>
>> When the app starts, I tap a button and bring up the About box. Then I
>> dismiss it. That is it.
>>
>> When the view is dismissed by tapping Cancel, NSZombie reports:
>> -[UINavigationBar willMoveToSuperview:]: message sent to
>> deallocated instance
>>
>> If I add an extra [???] retain to the navigationBar in ViewDidLoad,
>> NSZombie Reports:
>> -[CALayer release]: message sent to deallocated instance
>>
>> (1) How do I get to the CALayer and add an extra retain to stop this crash?
>> (2) What am I missing WRT retain counts? Why are these retain counts
>> so messed up?
>>
>> Jeff
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