If you have added any of this dependency already then try to match the version.
STEP 2 :
Register Acquire SDK in the onCreate() method of an Activity/Application where you plan to use the SDK. Use the initialization details provided by the Acquire Support admin and an Application instance:
STEP 3 :
Add the following to your manifest file:
STEP 4 :
Initialize Acquire SDK with accountID by using this method.
This method will connect to the Acquire server in the background.
To get the Demo app clone project from GitHub: SDKs Guide
To know more about initialization options click here.