Re: Using NSTimer to call the main thread
Re: Using NSTimer to call the main thread
- Subject: Re: Using NSTimer to call the main thread
- From: "A.M." <email@hidden>
- Date: Thu, 27 Mar 2003 14:03:04 -0500
That would not be a good idea since the message could be called by the
other thread simultaneously and create a race condition. The solution
is to use NSNotificationCenter which is great for this type of thing.
Read the link below for info on using the NSNotificationCenter with
threads.
http://developer.apple.com/techpubs/macosx/Cocoa/TasksAndConcepts/
ProgrammingTopics/Notifications/index.html#//apple_ref/doc/uid/10000043i
On Thursday, Mar 27, 2003, at 13:36 US/Eastern, email@hidden
wrote:
wouldnt it be equally possible to pass a reference to the UI
controller to the
secondary thread and call updateValueNow: directly?
On Thu, 27 Mar 2003 10:35:36 -0800 (PST), Peter Robinson wrote:
I am trying to communicate with the main thread in order to update
the user interface.
From my secondary thread, I can install a one-off NSTimer on the
run-loop of the main thread, like this:
NSTimer *timer = [NSTimer timerWithTimeInterval: 0
target: self selector: @selector(updateValueNow:)
userInfo: nil repeats: NO];
[mainRunLoop addTimer: timer forMode: NSDefaultRunLoopMode];
which seems to work well enough. But I am worried that it isn't
legal to install a timer on a run-loop from another thread. Can I do
this? If not, what is the simplest way to get code called on the
main thread? I am using 10.1.
Thanks,
Peter
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