Android Lib Project与Android Project中R文件的区别

Android Lib Project中生产的R文件内，都不是常量。

/* 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. */public final class R {    public static final class string {        public static int action_settings=0x7f050001;        public static int app_name=0x7f050000;        public static int hello_world=0x7f050002;    }}

Android Project中生产的R文件内，都是常量。

/* 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. */public final class R {    public static final class string {        public static final int action_settings=0x7f050001;        public static final int app_name=0x7f050000;        public static final int hello_world=0x7f050002;    }}

所以当你的项目中有用到switch的地方，同时条件又用到了 R 中的常量时，将此project转成lib project的话就会报错。要求你将 switch-case 换成 if-else。

As of ADT 14, resource fields cannot be used as switchcases. Invoke this fix to get more information.

Android Lib Project与Android Project中R文件的区别_第1张图片

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