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Re: performSelector: withObject: afterDelay help for noob please
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Re: performSelector: withObject: afterDelay help for noob please


  • Subject: Re: performSelector: withObject: afterDelay help for noob please
  • From: Ken Thomases <email@hidden>
  • Date: Wed, 2 Jul 2008 09:32:12 -0500

On Jul 2, 2008, at 9:23 AM, Mike Abdullah wrote:

On 2 Jul 2008, at 15:09, Papa-Raboon wrote:

I have a bit of static text I set with a value of: @"record Added"
with the following: [complete setStringValue:@"Record added"]; and I
want it to disappear after 3 seconds and I thought the easiest way
would be to just change the value to: @"" with a timer.

Currently I have this: [self setStringValue:complete withObject:@""
afterDelay:3.0];

Which doesn't seem to work and has the following warning:

'mainController' may not respond to '- setStringValue:withObject:afterDelay:'

What am I doing wrong please and what should my code really be?

Well the compiler is telling you exactly what is wrong; mainController doesn't respond to the - setStringValue:withObject:afterDelay: message. Instead, you need to do:


[self performSelector:@selector(setStringValue:) withObject:@"" afterDelay:3.0];

Actually, since the original receiver of the message is "complete", it (not "self") should still be the receiver of the performSelector:withObject:afterDelay:.


Like so:

[complete performSelector:@selector(setStringValue:) withObject:@"" afterDelay:3.0];

Cheers,
Ken
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References: 
 >performSelector: withObject: afterDelay help for noob please (From: Papa-Raboon <email@hidden>)
 >Re: performSelector: withObject: afterDelay help for noob please (From: Mike Abdullah <email@hidden>)

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