Removed MY_APP.app file

I moved MY_APP.app file by mistake, in Xcode Project Navigator, under开发者_开发百科 "products" folder, it seems red now, what will be the consequences?

And how can I bring it back?

When I build and run the project in iPhone simulator it doesn't come back.

Delete the red marked file(which means that is not located physically).Reset the simulator and clean all targets. Build first and then run should work.