Hi @AmitKGupta
You need to replace these three parameters with appropriate values.
strMktHost: This is the Adobe Campaign Marketing Instance URL. If you are iOS app developer ask adobe campaign consultant to provide the same.
strTckHost: This is secure tracking host URL of adobe campaign instance. This is present in the deployment wizard of adobe campaign.
strIntegrationKey: There is always a service associated with iOS and android app integration ask the integration key from adobe campaign consultant.
Looks like you are iOS developer please ask adobe campaign consultant he will provide these values to you in no time.