现在，我在'res/layout'文件夹内存储每个XML布局文件，因此管理小型项目是可行和简单的，但当有大型和繁重的项目的情况下，那么应该有一个层次结构和子文件夹内需要的布局文件夹。
如。
layout
-- layout_personal
-- personal_detail.xml
-- personal_other.xml
--layout_address
-- address1.xml
-- address2.xml
同样，我们希望大型应用程序有子文件夹，那么在Android项目中有办法做到这一点吗?
我能够在布局文件夹内创建layout-personal和layout_address子文件夹，但当需要使用R.layout访问XML布局文件时。_______，当时在菜单中没有任何XML布局弹出。
当前回答
While all the proposals for multiple resource sets may work, the problem is that the current logic for the Android Studio Gradle plug-in will not update the resource files after they have changed for nested resource sets. The current implementation attempts to check the resource directories using startsWith(), so a directory structure that is nested (i.e. src/main/res/layout/layouts and src/main/res/layout/layouts_category2) will choose src/main/res/layout/layouts consistently and never actually update the changes. The end result is that you have to rebuild/clean the project each time.
我在https://android-review.googlesource.com/#/c/157971/上提交了一个补丁，试图帮助解决问题。
其他回答
检查Bash Flatten Folder脚本，该脚本将文件夹层次结构转换为单个文件夹
不可能，但是布局文件夹是按名称排序的。因此，我在布局文件名前加上包名。例如，对于“购买”和“玩”两个包:
buying_bought_tracks.xml
buying_buy_tracks.xml
playing_edit_playlist.xml
playing_play_playlist.xml
playing_show_playlists.xml
如果你在批准的答案中使用了这个方法，并且想要稍微改进一下，那么就像这样更改gradle设置:
sourceSets {
main {
res.srcDirs = [
file("src/main/res/layouts/").listFiles(),
"src/main/res/layouts",
"src/main/res"
]
}
}
因此，如果你添加更多的文件夹和布局，你不需要回到这里，并附加一个很长的源文件夹列表，让gradle为你获取所有的文件夹。
I think the most elegant solution to this problem (given that subfolders are not allowed) is to prepend the file names with the name of the folder you would have placed it inside of. For example, if you have a bunch of layouts for an Activity, Fragment, or just general view called "places" then you should just prepend it with places_my_layout_name. At least this solves the problem of organizing them in a way that they are easier to find within the IDE. It's not the most awesome solution, but it's better than nothing.
现在有了Android Studio和Gradle，你可以在你的项目中有多个资源文件夹。允许组织不仅你的布局文件，但任何类型的资源。
它不是一个确切的子文件夹，但可以分离应用程序的部分。
配置如下:
sourceSets {
main {
res.srcDirs = ['src/main/res', 'src/main/res2']
}
}
检查文档。
