Should App.run_after use GCD?

[taybenlor]

I'm currently spicing up one of my RubyMotion apps with BubbleWrap. A little bit of code I have works fine with GCD but crashes using App.run_after. My knowledge of the Objective C threading model and Timers vs GCD is limited, so I'm not sure whether this would break a bunch of existing code.

Anyway, my example:

    loc = @mapView.region.center

    Dispatch::Queue.main.after 0.4 do 
      new_loc = @mapView.region.center
      if loc == new_loc
        self.updateLocation
      end
    end

The change to BubbleWrap would be super quick, though I haven't made the change and tested it. Just wanted to check it was a sane thing to do.

[taybenlor]

Duplicate of #180