Question

This methon is really cool:

- (void)performSelectorOnMainThread:(SEL)aSelector withObject:(id)arg waitUntilDone:(BOOL)wait;

But I need something simple like it to perform method with number of arguments in main thread like:

- (void)methodWithFirstObject: secondObject:

What is the simplest way to do this?

Answer 1

performSelectorOnMainThread is just a convenient way of playing with an NSOperation which is a convenient way of playing with GDC. If you ever need more functionality, just drop down to the next level. You’ll have to manage a bit more complexity, but will have more flexibility. An awful lot of cocoa is designed this way.

You’ll want to read up on NSOperation, but I think this will do what you want [typing on my phone, haven’t compiled]

NSBlockOperation *operation = [NSBlockOperation blockOperationWithBlock:^{
  [self myMethod:foo thatRequiresMultiple:bar andAlso:baz];
}];

[[NSOperationQueue mainQueue] addOperation:operation];