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 17:33:32 -0400
On Thu, Apr 7, 2011 at 8:30 AM, Mike Abdullah <email@hidden> wrote:
> Have you run the static analyser?
> Have you tested using the Zombies Instrument?
If it matters, the application is a Tab Bar app. One tab is set up
with disclosures. One of the disclosure buttons is "About". Once the
button is clicked, the "About Box" is shown. I'd like to rip it out
for efficiency, but I cannot (OpenSSL licensing requires a statement).
Jeff
> 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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