1. install

? ? ? stp1: download JDK、 SDK 、 AndroidStudio

? ?JDK= java development kit ?( AS base on java environment)

? ?SDK=xxxx kit ( use for android program kit)

? ?AndroidStudio

? ? ?stp2: first install JDK

? ? ? ? ? ? ? ?second install AS

? ? ? ? ? ? ? ?Third with AS , SDK manager , choose SDK with option

? ? ? stp3: run!!

2. learn

? ? ? 2.1. create project : ( android system construction the same as iOS , ?present layer, ?application layer, resource layer ( with media, pics, content), basic layer ( with driver and sth.)

? ? ? 2.2. activity : ?every thing you view in android program is a activity.

? ? ? 2.3. create and use view/ editText / ?step: create layout file, ?inside create main_activity.xml ( all the?

position and character can be put into here ) => create activity.java ( you can edit your java program to give some fuction or method to make the unit in xml to be “ fun!” => register all your add, especially the?

activity in your manifest.xml with “<xx> </> “ ( some thing like that ) , after that you can running your program in simulator.

3.intent

? ? ? ? ? ?intent is a kind of method help you to transfer, shift between 2 or several activity.

? ? ? ? ? ?For example: If you want to make a register page.?

? ? ? ? ? ?U entered the username and the password. U push the button, and shift to the 2nd page.

? ? ? ? ? ?you want to keep the username & password from 1st page to 2nd page. you use intent.

4. About Java & class.

Java alway use “.xxx” (class) to act an action to an object.?

for example. ? ? ? ? ?button.onClickListener() ? ?=> we give button object on action, to listen it if it is clicked.