Product Flavors

.
├── build.gradle
├── gradle
│   └── wrapper
│       ├── gradle-wrapper.jar
│       └── gradle-wrapper.properties
├── gradlew
├── gradlew.bat
└── src
    ├── free
    │   └── java                        <--- Source code for "free" product flavor
    ├── main
    │   ├── AndroidManifest.xml
    │   ├── java
    │   └── res
    └── pro
        └── java                        <--- Source code for "paid" product flavor
        

• To start with the flavors, we need to declare different flavors at app level build.gradle file inside android block. i.e. :-

  
  	productFlavors {
  		free {
  		    applicationId "yourpackagename.free"
  		}
  		paid {
  		    applicationId "yourpackagename.paid"
  		}
          }
  
  

• Now go to src directory of the project and create folders with the name of flavors. i.e. free, paid.
• Create folders with the names of java and res inside newly created flavor folders.
• Add package with the same package name of project inside java directory of both flavors.
• Create a java class with the name of "Constants.java" in both flavors.
• Add a static string with the different url of different flavors. i.e. :-

  		1.	http://www.example.com/FreeApi
  		2.	http://www.example.com/PaidApi

• Now use this apis in different falavors.

Dependencies for product flavors

dependencies {
    compile 'com.android.support:multidex:1.0.1'         	<--- Dependency for regular source code
    proCompile 'com.android.support:multidex:1.0.1'    		<--- Dependency for product flavor
}

Generated tasks

Build variants provide tasks as combination of build types and product flavors. For Example :-

• freeDebug: Debug build for flavor Free
• freeRelease: Release build for flavor Free
• proDebug: Debug build for flavor Pro
• proRelease: Release build for flavor Pro