Step 1 :

Download Mobile SDK files from your zone near to Invocation code

Step 2 :

Extract that .zip file then copy that two files like NameofyourActivity.java and adsdk folder and paste in your src Folder

Step 3 :

Import the exact package name of your Application and goto NameodyourActivity.java enter our delivery engine URL and Your Application ID . You can getthese details from Mobile SDKs tab from Publisher Dashboard