Android工程的目錄結構詳解

在搭建Android開發環境及簡單地建立一個HelloWorld項目後，本篇將通過HelloWorld項目來介紹Android項目的目錄結構。本文的主要主題如下：

1、HelloWorld項目的目錄結構

· 1.1、src文件夾

· 1.2、gen文件夾

· 1.3、Android 2.1文件夾

· 1.4、assets

· 1.5、res文件夾

· 1.6、AndroidManifest.xml

· 1.7、default.properties

下面將分節介紹上面的各級目錄結構。

1.1、src文件夾

顧名思義（src, source code）該文件夾是放項目的源代碼的。打開HelloWZ喎?/kf/ware/vc/" target="_blank" class="keylink">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"/uploadfile/Collfiles/20150105/20150105085158176.png" alt="\">

· values：軟件上所需要顯示的各種文字。可以存放多個*.xml文件，還可以存放不同類型的數據。比如arrays.xml、colors.xml、dimens.xml、styles.xml

· 1.6、AndroidManifest.xml

項目的總配置文件，記錄應用中所使用的各種組件。這個文件列出了應用程序所提供的功能，在這個文件中，你可以指定應用程序使用到的服務(如電話服務、互聯網 服務、短信服務、GPS服務等等)。另外當你新添加一個Activity的時候，也需要在這個文件中進行相應配置，只有配置好後，才能調用此 Activity。AndroidManifest.xml將包含如下設置：application permissions、Activities、intent filters等。

HelloWorld項目的AndroidManifest.xml如下所示：

關於AndroidManifest.xml現在就講這麼多，此系列後面的文章將單獨詳細介紹。

1.7、 default.properties

記錄項目中所需要的環境信息，比如Android的版本等。

HelloWorld的default.properties文件代碼如下所示，代碼中的注釋已經把default.properties解釋得很清楚了：