iPhone: How to determine if thread is main thread?

Question

How to determine if the current thread inside a method is a main thread, or just a thread that is asynchronous and created? Does the ID tell me?

score 152 · Accepted Answer · edited Aug 30 '11 at 00:42

152

Like this: [NSThread isMainThread]

edited Aug 30 '11 at 00:42

omz

answered Aug 30 '11 at 00:24

Noah Witherspoon

Alternative way: -(BOOL)IsMainThread { return dispatch_get_main_queue() == dispatch_get_current_queue(); } – Durai Amuthan.H Oct 21 '13 at 09:13
5

`dispatch_get_current_queue()` is deprecated as of iOS 6. – Noah Witherspoon Oct 21 '13 at 14:33
4

**For Swift 3** `if Thread.isMainThread { print("Main Thread") }` – dimohamdy Dec 04 '16 at 15:35

1 Answers1