1. Copy the aar to the libs in the project
2. Add in the root directory of build.gradle in the module
repositories{
flatDir {
dirs 'libs'
}
}
3. Add in the dependencies tag of the root directory of build.gradle in the module
compile(name:'SDK-release', ext:'aar')
where SDK-release is the name of your aar
4. After completing the first three steps, you will see the added aar in the External Libraries of the project