Introduction - If you have any usage issues, please Google them yourself
BREW mobile platform example, the realization of Apple mobile. According to the keyboard through the "UP", "Down", "Left" and "Right" so that the whole Apple can move freely on the screen (Step = 1), adopted by the "*" Apple back to the initial position (screen middle) 1, Apple is 4 objects combination, the mobile how to be an overall 2, as key distinction between event-driven buttons all three movements, each time Apple's been more than a mobile Apple's position as a reference