Hi, I'm a 14 year old... and I got interested in developing android apps. I had this idea for an app. I call it Shadow. I installed the Android SDK and JDK, I'm using Android Studio. I already made the main screen/activity layout but haven't programmed it yet. (Still learning the basics of Java) So what's next? Do I make another activity? I would like it if you (the pro developers) would guide me through the process.