Re: Thread usage : Main thread interrupting secondary thread
Re: Thread usage : Main thread interrupting secondary thread
- Subject: Re: Thread usage : Main thread interrupting secondary thread
- From: Miles <email@hidden>
- Date: Thu, 5 Mar 2009 22:53:10 -0800
Sorry to bump this but it's driving me nuts. Even knowing if this sounds
expected or unexpected would be really helpful at this point, so I can
figure out where to go from here to solve this problem.
Thanks again, in advance.
On Thu, Mar 5, 2009 at 12:43 PM, Miles <email@hidden> wrote:
>
> I'm new to using threads and hitting an unexpected issue.
>
> *There is an object moving across the screen on a separate thread started
> like this:*
>
> [NSThread detachNewThreadSelector:@selector( startObjectsAnimation: )
> toTarget:animationHelper withObject:nil];
>
> * Then in animationHelper:*
>
> NSAutoreleasePool *autoreleasepool = [[NSAutoreleasePool alloc] init];
> animationTimer = [NSTimer scheduledTimerWithTimeInterval:0.02 target:self
> selector:@selector(doAnimation: ) userInfo:nil repeats:YES];
> [[NSRunLoop currentRunLoop] addTimer:animationTimer
> forMode:NSDefaultRunLoopMode];
> [[NSRunLoop currentRunLoop] run];
> [autoreleasepool release];
>
>
> *Then I have another object that when touched, gets a fade animation
> applied to it (on the main thread):*
>
> CAAnimationGroup *anim = [AnimationCreatorUtil
> createAnimationsForOnWayOut];
> anim.delegate = tv;
> [[tv.mview layer] addAnimation:anim forKey:@"fade"];
> [tv.mview setAlpha:0];
>
> This is happening on the main thread. However, when this fade animation is
> applied on the main thread, the animation of the other object on the
> secondary thread pauses for a really brief moment. Since they are happening
> on different threads I'd expect neither of them to affect one another. What
> could be causing this?
>
> Thanks!
>
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