How to use Google Drive SDK in Android project with hardcoded credentials

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http://stackoverflow.com – How can I hardcode credentials to my Google Drive Service so users of the app will always get acces to my files without auth? I have found solution using Java SKD but these libraries doesn't work well with Android: https://developers.google.com/drive/service-accounts#use_service_account... Are there any examples of successful attempts of similar tasks? (HowTos)