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【Android Development for Beginners】Lesson 2A : Update a Variable in the App

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"+"







But in this class you will wonder whether the number just SKIP to the final quantity.



USE THE DEBUGGER 





H.W.











Some tips : you will find that the number just skip to the quantity of 4. This is not the result we're expected, so we will discuss it in the next note.















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【Quora 翻譯&整理】對於程式初學者嘗試解決問題的好網站推薦




























   原文出處： What are some suggested websites to solve programming problems for beginners?  (2016/5/15)     此篇文章強調的是去參加project的那種網站推薦         




















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【 Android Development for Beginners】 Lesson 3A : Object Oriented Programming - 4




























(I think Lesson 3A is the most important but also the most difficult part for beginner so far )   This Notes is according to the udacity free course :   Android Development for Beginners   Lesson 3A : Object Oriented Programming    Call Method on an objects  If We want to call a method on an object   object variable name . method name ( input argument );  ex: titleTextView.setText("News");   You need to make sure you put a right object so you can call the method        




















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第二章 C++ 程式設計簡介




























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