How to change the User Interface of personal MIT App Inventor?

Open Source Development
1

Hi friends,
I am Nick a computer science student and we are some friends working on create app inventor platform for our collage. can anyone tell me how to change user interface of MIT App Inventor ?

and one more question from my side how to add visible component some thing like button.

Thank You
Nick

2

The UI is mostly composed in Java, with some JavaScript, so if you aren't already familiar you may want to learn a bit of those languages first. The majority of the UI is constructed in appengine/.../Ode.java in the initializeUi method. The various components that make up the UI are spread throughout a number of different packages, such as boxes, explorer, editor, and widgets.

You should read through the How to Add a Component document, specifically section 4.

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