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Re: handleGetURLEvent getting called after applicationDidFinishLaunching
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Re: handleGetURLEvent getting called after applicationDidFinishLaunching


  • Subject: Re: handleGetURLEvent getting called after applicationDidFinishLaunching
  • From: Jens Alfke <email@hidden>
  • Date: Tue, 27 Aug 2013 09:32:41 -0700

On Aug 27, 2013, at 7:24 AM, Bradley O'Hearne <email@hidden> wrote:

> So switching to iOS for a moment, things like location services callbacks, NSURLConnection callbacks, animation completion handlers, accelerometer and touch events -- all main thread? (I'm pretty sure a few of those aren't main thread, but asking just the same -- I'm not sure that detail is actually in the API doc for all of them.

NSURLConnection's callbacks are invoked on whatever thread/runloop you started the connection on. (Unless you explicitly schedule it in a different runloop or dispatch queue.) It’s perfectly fine to run it on a background thread. The docs explain this.

The same goes for other I/O stuff like NSStream or CFStream. A good clue is that if the API has a method like -scheduleInRunloop: or -setDelegateQueue:, it supports background threads.

The API docs are generally good about explaining the threading of callbacks. If they don’t say anything, assume main thread.

—Jens
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References: 
 >handleGetURLEvent getting called after applicationDidFinishLaunching (From: "Bradley O'Hearne" <email@hidden>)
 >Re: handleGetURLEvent getting called after applicationDidFinishLaunching (From: Jens Alfke <email@hidden>)
 >Re: handleGetURLEvent getting called after applicationDidFinishLaunching (From: "Bradley O'Hearne" <email@hidden>)
 >Re: handleGetURLEvent getting called after applicationDidFinishLaunching (From: Jens Alfke <email@hidden>)
 >Re: handleGetURLEvent getting called after applicationDidFinishLaunching (From: Uli Kusterer <email@hidden>)
 >Re: handleGetURLEvent getting called after applicationDidFinishLaunching (From: Jens Alfke <email@hidden>)
 >Re: handleGetURLEvent getting called after applicationDidFinishLaunching (From: Kyle Sluder <email@hidden>)
 >Re: handleGetURLEvent getting called after applicationDidFinishLaunching (From: "Bradley O'Hearne" <email@hidden>)
 >Re: handleGetURLEvent getting called after applicationDidFinishLaunching (From: Uli Kusterer <email@hidden>)
 >Re: handleGetURLEvent getting called after applicationDidFinishLaunching (From: Uli Kusterer <email@hidden>)
 >Re: handleGetURLEvent getting called after applicationDidFinishLaunching (From: "Bradley O'Hearne" <email@hidden>)
 >Re: handleGetURLEvent getting called after applicationDidFinishLaunching (From: Ken Thomases <email@hidden>)
 >Re: handleGetURLEvent getting called after applicationDidFinishLaunching (From: "Bradley O'Hearne" <email@hidden>)
 >Re: handleGetURLEvent getting called after applicationDidFinishLaunching (From: Kyle Sluder <email@hidden>)
 >Re: handleGetURLEvent getting called after applicationDidFinishLaunching (From: "Bradley O'Hearne" <email@hidden>)

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