Everything is fine on PC but when I install my game on android mobile…the player walks automatically. When I recompile it into apk using automatic or manual options without making any changes twice or thrice it stops moving automatically. I donot know whats wrong. Please guide…what may be wrong at my end.
Maybe because with touch, the cursor remains on the onscreen control?
Hard to say without knowing anything about the game itself 
Share a screenshot of the events that make him walk, and give some details. 
Means when i compile the game my mouse cursor remains on walk buttons…