跳到主要內容

【 Android Development for Beginners】 Lesson 3A : Object Oriented Programming - 2

This Notes is according to the udacity free course :

Android Development for Beginners

Lesson 3A : Object Oriented Programming

Output from a method

If you want to output from a method : return value is the key point.

Review









A method has a return data type
and there will need the return message

to return the value to the upper layer-----UI

The word write behind the return data can't be reachable because the declaration were done in  "return message".

If there is no need to use return value, the method return data type is void.


Use Return Value


Define and Call a Method


 The displayMessage Method - Quiz

First Step


Second Step




留言

這個網誌中的熱門文章

【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

【 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

計算導論與 C 語言基礎:第六週 (C 語言歷史、規範)

本文為個人用於筆記 Coursera 課程:計算導論與 C 語言基礎中的課堂筆記。 本次課幫助大家了解 C 語言的歷史,了解 C 語言規範(Specification)的版本演進,了解 C 語言的規範是一個“寬鬆”的規範;在此基礎上,我們將闡述一門程序設計語言所包含的四種基本成分(如上所述)。 焦點問題: 為什麼相同的 C 程序在不同的 C 程序編譯器上,會編譯出不同的結果?