this message always appear on my corona simulator output
That’s normal and nothing to worry about. What that warning means is that our Corona Simulator does not support simulating Android status bars. Meaning that you’ll see it when you make a call to display.setStatusBar() while running a Corona project via an Android device skin, such as the GT-I9300 Android device you are running with. You won’t get this warning when running under an iOS device skin because our Corona Simulator supports simulating iOS status bars.
That’s normal and nothing to worry about. What that warning means is that our Corona Simulator does not support simulating Android status bars. Meaning that you’ll see it when you make a call to display.setStatusBar() while running a Corona project via an Android device skin, such as the GT-I9300 Android device you are running with. You won’t get this warning when running under an iOS device skin because our Corona Simulator supports simulating iOS status bars.