This is just out of academic curiosity because I can successfully use:
[NSThread detachNewThreadSelector: toTarget: withObject:] to do what I want.
Nevertheless, I have been trying to do the same thing in the main Thread with
NSTimer and something is wrong that I just cannot figure out. So, here are
some snippets:
In the .h file I have: NSTimer *itsTimer;
In the .m file I have:
- (void )startTimer {
if (!itsTimer || ![itsTimer isValid]) {
NSTimer *theTimer;
theTimer = [NSTimer scheduledTimerWithTimeInterval:0.5
target:self selector:@selector(timerFireMethod:) userInfo:nil repeats:YES];
itsTimer = theTimer;
}
}
- (void )stopTimer {
if (itsTimer && [itsTimer isValid]) {
[itsTimer invalidate];
itsTimer = nil;
}
}
- (void )timerFireMethod:(NSTimer *)theTimer {
NSLog(@"we are here"); // just to keep it simple at first
}
I call -startTimer and -stopTimer from the main Thread and the NSLog(@"we are
here") never shows in the Console.
I did try, unsuccessfully:
theTimer = [[NSTimer alloc] initWithFireDate:[NSDate date]
interval:0.5 target:self selector:@selector(timerFireMethod:) userInfo:nil
repeats:YES];
[[NSRunLoop currentRunLoop] addTimer:theTimer
forMode:NSDefaultRunLoopMode];
itsTimer = theTimer
I think I have found the problem, but I would like confirmation ... the calls
are from the main Thread, immediately followed by the display of a sheet. I am
trying to intercept errors while the sheet shows. And while the sheet shows,
all access to -timerFireMethod is temporarily halted.
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