Using Google Play Licensing (LVL)

Google Play offers a licensing service that lets you enforce licensing policies for applications that you publish on Google Play. With Google Play Licensing, your application can query Google Play to obtain the licensing status for the current user.

Any application that you publish through Google Play can use the Google Play Licensing service. No special account or registration is needed.

In order to retrieve your BASE64 license key your app must be uploaded to the Google Play Developer Console. Then access to your app -> Services and APIs.

For more information check out the Google Developers page.

Example Activity

public class MainActivity extends AppCompatActivity {
    private PiracyChecker checker;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        ...

        verify();
    }

    private void verify() {
        checker = new PiracyChecker(this)
            .enableGooglePlayLicensing("BASE_64_LICENSE_KEY")
            //.enableUnauthorizedAppsCheck()
            //.enableDebugCheck();
            // Add as many library customizations as you want
        checker.start();
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        checker.destroy();
    }

}