Program Beginner's Class Notes

This Notes is according to the udacity free course : Android Development for Beginners Lesson 2A :  Modifying First Lines of Java Code After paste up the Code on you MainActivity.java and run the button. Now, I introduce a simple concept for you.

This Notes is according to the udacity free course : Android Development for Beginners Lesson 2A :  Do Something When Button is Clicked We finish the layouts arrangement and we start to enter the most important step which is let your app can interact with users.