Best practice for checking if DISPATCH_QUEUE_PRIORITY_BACKGROUND exists?

Question

Apple's documentation clearly states that DISPATCH_QUEUE_PRIORITY_BACKGROUND is only available in iOS 5 or later. What is the correct way to check if it's available in the runtime environment?

score 4 · Answer 1 · answered Aug 14 '12 at 08:02

4

If you are building against iOS 5 SDK or later, it is safe to simply call dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_BACKGROUND, 0) and check for a non-NULL return value.

answered Aug 14 '12 at 08:02

das

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score 0 · Accepted Answer · edited May 23 '17 at 12:20

0

Check the version of the OS and see if it is greater or equal to 5

edited May 23 '17 at 12:20

Community

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answered Aug 14 '12 at 03:21

borrrden

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Best practice for checking if DISPATCH_QUEUE_PRIORITY_BACKGROUND exists?

2 Answers2