I tried to run the QR code encoder example in https://github.com/myang-git/QR-Code-Encoder-for-Objective-C
but it could only be built. The run button is always gray. I've google this problem. Somebody said it's because executable is missing. I tried to go to "product->edits scheme" and try to give the path of executable, but i cannot give the path because there is no executable.
Does anybody ever try this example?