【Android Development for Beginners】Lesson 2A : Hook Up Two Buttons

This Notes is according to the udacity free course :

Android Development for Beginners

Lesson 2A : Hook Up Two Buttons

Today's class is to modify our JustJava app.

1. Add two buttons on the app.
2. Check out the layout style. 
3. Modify the xml for work.
4. Check out the initial value.
1. Quantity shows "2"
2. Price shows "10"

xml code :

java code :

if you want to add button's method, try to copy the "submitOrder" button.