performSelectorOnMainThread with multiple parameter

Question

I am trying to perform this action on the main thread:

[curItem.mButton setBackgroundImage:newArt forState:UIControlStateNormal];

So I do t

Answer 1

Another option is GCD. You can invoke a block on the main queue which gets run serially when the run loop runs. blocks aren't limited to one object like performSelectorOnMainThread.

dispatch_async(dispatch_get_main_queue(), ^{
   // code here
});

I wrote a more comprehensive comparison of performSelectorXXX and GCD here complete with samples:

GCD, Threads, Program Flow and UI Updating

Also, here's another related SO post:

GCD to perform task in main thread