Re: NSTimer crashing on fire
Re: NSTimer crashing on fire
- Subject: Re: NSTimer crashing on fire
- From: Buddy Kurz <email@hidden>
- Date: Fri, 23 Apr 2004 11:37:01 -0700
It seems like you should be setting your nagTimer pointer and nagWindow
pointer to nil after releasing the referenced objects
Buddy Kurz
On Apr 23, 2004, at 10:44 AM, Jeremy Dronfield wrote:
I'm making some really elementary mistake here, but can't figure out
what it is. I've ploughed through the docs and the archives, but can't
find anything that answers this specific problem. The situation is
this: I'm using a timer to launch an Unlicensed message after a period
of inactivity (kind of similar to OmniWeb, but using a window). This
is the method called (triggered by the user making a selection in the
application's table view):
- (void)startNagTimer
{
if (nagTimer != nil) {
[nagTimer invalidate];
[nagTimer release];
}
if (nagWindow != nil) {
[nagWindow close];
[nagWindow release];
}
if (nagTimer == nil) {
nagTimer = [[NSTimer scheduledTimerWithTimeInterval:10.0 target:self
selector: @selector(runNagWindow:) userInfo:nil repeats:NO] retain];
}
}
The first time through, the timer is started. On subsequent calls
(user has clicked the table view), the timer is invalidated and
restarted. If the timer is left long enough to fire, the nag window is
launched. Then, when the table is clicked again, the window goes away.
This is where it goes wrong. After it has fired and been recreated, it
crashes when it tries to fire again.
So, should I be looking for problems in the selector (i.e. something
in the method causing trouble in the run loop), or is it just that my
whole use of NSTimer is up the creek? In case it's relevant, all the
-runNagWindow: method does is create a window with a text view and
some text. The window is transparent and its level is
NSStatusWindowLevel.
Regards
-Jeremy
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