How to build multiple APKs from a single source project

Question

I wanna get multiple APKs from a single source project. Just the application's title, icon, and package name are different with the others.

The project is on gradle(1.12), as below.

.
└── my_project
    ├── build.gradle
    ├── settings.gradle
    └── module
        ├── build.gradle
        └── src

How can I do that?

Answer 1

You can use productFlavors for that, and the under the promo and full folders (for example) create strings file (promo/res/values/strings.xml) with the update title value, same approach goes for the icon.

productFlavors {

    promo {
        packageName "com.woony.promo"
        versionCode 1
        versionName "v1.0.0_promo"
    }

    full {
        packageName "com.woony"
        versionCode 1
        versionName "v1.0.0"
    }

}

The updated project structure should be like the following

.
└── my_project
    ├── build.gradle
    ├── settings.gradle
    └── module
        ├── build.gradle
        └── src
            ├── main
            ├── promo
            └── full

And to generate the release apks just call the following once (just make sure you added signingConfigs and linked it in your release buildTypes)

gradle assembleRelease