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How does one determine the thread a given function call is running on?
I want to make sure a method is called on the main thread in order to update some UI elements.
Can I for example do something like this?
- (void) myMethod {
if (<current thread is not main thread>) {
[self performSelectorOnMainThread: @selector(myMethod) withObject: nil waitUntilDone: NO];
} else {
// my code here
}
}
Check out [NSThread isMainThread].
http://developer.apple.com/library/ios/documentation/Cocoa/Reference/Foundation/Classes/NSThread_Class/Reference/Reference.html#//apple_ref/occ/clm/NSThread/isMainThread