How to use different set of resources (images, themes, etc.) during builds in Android Studio?

Issue

We need to build different looking apps for different clients from the same source base. The app for each client has to be branded - i.e. must have different images, colors, etc. Most of the resources - e.g. layouts, strings - will be shared among all clients.
We are thinking of using sourceSet in build.gradle. For example:

android {
...
    sourceSets {
        Main {
            // resources common to all clients
            resSrcDirs = 'res'
            // resources specific to client1
            resSrcDirs += 'client1/res' 
            // resources specific to client2
            //resSrcDirs += 'client2/res'
            ...

            // The same approach taken for manifest that contains application theme
            manifestSrcFile=client1/AndroidMainifest.xml
            // manifestSrcFile=client2/AndroidManifiest.xml
            ...
        }
    }
}

Before each build we will uncomment/comment out selected lines in build.gradle.

We think that this would work but wonder if there is a better way of doing it.

Solution

You can use flavorDimensions,

android {
    flavorDimensions "version"

    productFlavors {
        commom
        client1
        client2
    }
}

then create your resource folder src/client1 & src/client2. In the Build Variants window,you can switch which style to run or debug.Refer to the figure below. If you selected client1Debug or client1Release,the resources in client1/res will override the resources of the same names in the main/res.

Answered By - JiajiaGu