Program Beginner's Class Notes

第一課：Views Views 是指一個App當中你所看到的東西，不管是文字、圖片、按鈕，都是一種View。 以此圖為例，可以看到許多種View，並給大家一個小小的Quiz作為練習。

原文： What are some of the best ways to learn programming? 翻譯＆筆記自目前Upvoted數最高的答案： 作者：Kah Keng Tay 有八個選項可以提供給大家做參考，從這些地方入手：

This Notes is according to the udacity free course : Android Development for Beginners Lesson 3A : Object Oriented Programming This is the most important class in this course Define a method

This Notes is according to the udacity free course : Android Development for Beginners Lesson 2B : Final version code

This Notes is according to the udacity free course : Android Development for Beginners Lesson 2B :  String Data Type,  Combining Strings Together and Integer Variables Finally We cross the river and change the layouts successfully. But We can do it better by letting the price change automatically but not change after the we click the "order" button. So this is what we want to do in this class.

This Notes is according to the udacity free course : Android Development for Beginners Lesson 2B :    Plan Quantity Picker Layout Nested ViewGroups (part1, 2) Choosing the Right XML Layout Build the Quantity Picker Layout In this Part, We finished the Lesson 2A and go on to the 2B We want to rearrange the layouts to a better Views.

This Notes is according to the udacity free course : Android Development for Beginners Lesson 2A : Fix the Order Button Finally, you can add new coffee by just click the "+" button, but the order button is still out of work.

This Notes is according to the udacity free course : Android Development for Beginners Lesson 2A : Make the Quantity Picker Work In Last Class we still cannot fix the problem to increase the coffee quantity automatic. After the practice, now we can face the problem.

This Notes is according to the udacity free course : Android Development for Beginners Lesson 2A :  Update Quantity Variable, Modify the increment() Method, Modify the decrement() Method In the last class, we found when we press the button "+" more and more, the coffee quantity just stopped at "4". And we have to figure out how to fix this problem step-by-step  in this class.

This Notes is according to the udacity free course : Android Development for Beginners The Notes below are my own notes in class. Lesson 2A :  Update a Variable in the App When you put new variable in the MainActivity.java you will get a new results when you press the button"+"

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

This Notes is according to the udacity free course : Android Development for Beginners Lesson 2A :  Debugging a Crash This part just watch video is better for understand.

This Notes is according to the udacity free course : Android Development for Beginners Lesson 2A :  Solving Math Problems So we know how to let our machine to display the number, and then we want to ask them to help us do some math work.

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.

This Notes is according to the udacity free course : Android Development for Beginners Lesson 2A : Create a New Project Plan How to Build the Layout Build layout Follow the instruction below to build up a new app called "Just Java" use empty activity .