问题 I am studying AccessibilityService. I studied what is Accesibility Service and why we use it, what are advantages of Accessibility Service. So I tried to make a demo of Accessibility service to see how it works, that when a Email or any whatsapp, wechat message comes than in which method it goes But I didn't get success. As I started this project I get Exception on line StartService(i); So kindly look over this code and tell what mistake I am making, Your comment and suggestion will be so