moving a function to a background thread in objective c
Well that's pretty easy actually with GCD. A typical workflow would be something like this:
dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0ul);dispatch_async(queue, ^{ // Perform async operation // Call your method/function here // Example: NSString *result = [anObject calculateSomething]; dispatch_async(dispatch_get_main_queue(), ^{ // Update UI // Example: self.myLabel.text = result; });});For more on GCD you can take a look into Apple's documentation here
Also to add, sometimes you don't need to use GCD, this one is very simple to use :
[self performSelectorInBackground:@selector(someMethod:) withObject:nil];