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Android tutorial : Before HelloWorld

作者:Anderson on 九月 2, 2008 Posted in RSS | | 觀看文章來源

由於google android 官網上推薦使用Eclipse,我們當然從善如流。
打開Eclipse後,直接 File->New->Project, 再選擇 Android Project!

就進入命名的部份,接著要填入4個名稱:
Project Name、Package Name、Activity Name以及Application Name。
其中
Project Name及Package Name跟開發Java的習慣一樣,而新增的Activity是Android新增的一個介面來控制程式,之後會再講解,Application Name 則是顯示在應用程式上的標題。

確定之後就會建立一個簡單的project包含:

src\myproject.java
src\R.java
res\drawable\icon.png
res\layout\main.xml
res\values\strings.xml
AndroidManifest.xml

src裏面的當然是我們主要的程式,但是其中我們只會修改到myproject.java,我們不需要動到,因為R.java是來幫助我們控制resource的程式,會自動因應res\目錄中的東西而有所更動。

icon.png就是icon請不要懷疑。

res\layout\main.xml則是主要來掌管外觀的設定,可以調用些android本身有的widget。在Eclipse下新增android project後會自動幫我們放入一個TextView來顯示文字。

res\values\strings.xml則是讓我們定義些常數的檔案。在Eclipse下新增android project後會自動幫我們放入

< string name=”hello”> Hello World, myproject </string>

AndroidManifest.xml則是相當奧妙的東西,負責來管理android各個activity之間的互動。由於我們根本除了設定名字之外什麼都沒做。


&ltapplication android:icon="@drawable/icon" android:label="@string/app_name" >
&ltactivity android:name=".Myproject" android:label="@string/app_name" >
&ltintent-filter >
&ltaction android:name="android.intent.action.MAIN" / >
&ltcategory android:name="android.intent.category.LAUNCHER" / >
</intent-filter >
</activity >
</application >

裏面也是幫我們做一個簡單的宣告。

以上只是簡單的檔案介紹,邊研究邊寫些筆記再慢慢分享上來。

:,

讀過本文的讀者, 也對以下文章有興趣

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