Android : Google Drive API for android for multi account

Anyone has idea about how to create a cloud folder to access the Google Drive file system via andorid which is implemented by ES File Explorer.

I read and tried the code provided by Google documentations:

https://github.com/googledrive/android-quickstart https://developers.google.com/drive/android/auth#connecting_and_authorizing_the_google_drive_android_api

However, the QuickStar sample android app integrated with Google Play Service. The working flow is not similar as ES File Explorer.

I want my app which is similar as ES File Explorer, can allow the users input their Google ID and password, then the app can access to their Google Drive. Hence, multiple account with different ID can be created.

I spent 2 weeks to read and understand the API but I still cant get the expected outcome.

Hope anyone can give me some idea or samples to me. Thanks.