I want to move my resources directory form ./src/main/res to ./res in the interests of porting an app from Eclipse to Android Studio

I've added these lines to my build.gradle file:

sourceSets {
    main {
        resources {
            srcDirs = ["./res"]
        }
    }
}       

and Android Studio seems to recognize this after syncing my gradle files, but not really. When I open an xml file from res/layout it's clearly not recognized as a layout file, and I get the error message http://schemas.android.com/apk/res/android "URI is not registered (Settings | Languages & Frameworks | Schemas and DTDs)"

Is there a way to re-arrange my source files, or is sourceSets.main.resources.srcDirs a lie?

Adding on: I did try using res instead of resources. This was the result:

Build file '/Users/falk/Android/Foo/fooapp/build.gradle' line: 33

A problem occurred evaluating project ':fooapp'.
> No signature of method: build_ag5e2qc90oc7bck5pxaqmbzuf.sourceSets() is applicable for argument types: (build_ag5e2qc90oc7bck5pxaqmbzuf$_run_closure2) values: [build_ag5e2qc90oc7bck5pxaqmbzuf$_run_closure2@4536888e]

* Try:
Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Exception is:
org.gradle.api.GradleScriptException: A problem occurred evaluating project ':fooapp'.
    at org.gradle.groovy.scripts.internal.DefaultScriptRunnerFactory$ScriptRunnerImpl.run(DefaultScriptRunnerFactory.java:93)
    ...
    at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:56)
Caused by: groovy.lang.MissingMethodException: No signature of method: build_ag5e2qc90oc7bck5pxaqmbzuf.sourceSets() is applicable for argument types: (build_ag5e2qc90oc7bck5pxaqmbzuf$_run_closure2) values: [build_ag5e2qc90oc7bck5pxaqmbzuf$_run_closure2@4536888e]
    at build_ag5e2qc90oc7bck5pxaqmbzuf.run(/Users/falk/Android/Foo/fooapp/build.gradle:33)
    at org.gradle.groovy.scripts.internal.DefaultScriptRunnerFactory$ScriptRunnerImpl.run(DefaultScriptRunnerFactory.java:91)
    ... 140 more

CodePudding user response：

Use res instead of resources

sourceSets {
    main {
        res {
            srcDirs = ["./res"]
        }
    }
}

// com.android.build.api.dsl.AndroidSourceSet
/** The Java-style resources for this source-set */
val resources: AndroidSourceDirectorySet

/** The Android Resources directory for this source-set. */
val res: AndroidSourceDirectorySet