Android R.java 文件

Android R.java 是一個(gè)由aapt（Android資源打包工具）自動(dòng)生成的文件，其中包含了res/目錄下所有資源的資源ID。愛掏網(wǎng) - it200.com

如果在activity_main.xml文件中創(chuàng)建了任何組件，相應(yīng)組件的ID會(huì)自動(dòng)在這個(gè)文件中創(chuàng)建。愛掏網(wǎng) - it200.com可以在activity的源文件中使用這個(gè)ID對組件進(jìn)行任何操作。愛掏網(wǎng) - it200.com

注意：如果刪除R.jar文件，Android會(huì)自動(dòng)重新創(chuàng)建。愛掏網(wǎng) - it200.com

讓我們來看看Android的R.java文件。愛掏網(wǎng) - it200.com它包含了很多靜態(tài)嵌套類，如menu、id、layout、attr、drawable、string等。愛掏網(wǎng) - it200.com

/* AUTO-GENERATED FILE.  DO NOT MODIFY.
 *
 * This class was automatically generated by the
 * aapt tool from the resource data it found.  It
 * should not be modified by hand.
 */

package com.example.helloandroid;

public final class R {
    public static final class attr {
    }
    public static final class drawable {
        public static final int ic_launcher=0x7f020000;
    }
    public static final class id {
        public static final int menu_settings=0x7f070000;
    }
    public static final class layout {
        public static final int activity_main=0x7f030000;
    }
    public static final class menu {
        public static final int activity_main=0x7f060000;
    }
    public static final class string {
        public static final int app_name=0x7f040000;
        public static final int hello_world=0x7f040001;
        public static final int menu_settings=0x7f040002;
    }
    public static final class style {
        /** 
        Base application theme, dependent on API level. This theme is replaced
        by AppBaseTheme from res/values-vXX/styles.xml on newer devices.


            Theme customizations available in newer API levels can go in
            res/values-vXX/styles.xml, while customizations related to
            backward-compatibility can go here.


        Base application theme for API 11+. This theme completely replaces
        AppBaseTheme from res/values/styles.xml on API 11+ devices.

 API 11 theme customizations can go here. 

        Base application theme for API 14+. This theme completely replaces
        AppBaseTheme from BOTH res/values/styles.xml and
        res/values-v11/styles.xml on API 14+ devices.

 API 14 theme customizations can go here. 
         */
        public static final int AppBaseTheme=0x7f050000;
        /**  Application theme. 
 All customizations that are NOT specific to a particular API-level can go here. 
         */
        public static final int AppTheme=0x7f050001;
    }
}