CODEWITHSUNDEEP
macoscocoansoperationnsoperationqueue
MartinW
MartinW

Reputation: 5041

When to use NSOperationQueue's mainQueue, when to create a new queue?

This is the first time I use NSOperation/NSOperationQueue.
I wrote a NSOperation subclass that handles JSON export of a lot of data, because I want the UI to stay responsive during a longer export.

To which queue do I add my operation:
- the [NSOperationQueue mainQueue] or
- to a new NSOperationQueue, [[NSOperationQueue alloc] init]?

And what is the reasoning behing the decision?

Upvotes: 0

Views: 88

Answers (1)

Phillip Mills
Phillip Mills

Reputation: 31016

The main queue uses the same thread that handles UI operations. You want long operations sent to a background queue and then anything that displays the operation's results should come back to the main queue.

Upvotes: 2

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