Looking for logging into the Android Api site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Android Api site. After that you can login as usual with your login credentials.
https://stackoverflow.com/questions/28549315/login-example-in-android-using-post-method-using-rest-api
https://www.tutorialspoint.com/android/android_login_screen.htm
https://developers.google.com/android/guides/http-auth
https://developers.google.com/identity/sign-in/android/sign-in
https://developers.google.com/identity/sign-in/android/start-integrating
https://www.androidhive.info/2012/01/android-login-and-registration-with-php-mysql-and-sqlite/
https://www.simplifiedcoding.net/android-login-and-registration-tutorial/
https://medium.com/@1537877453702/instagram-api-simple-android-application-with-login-and-getting-user-info-e24f4f1bc023
https://medium.com/bcgdv-engineering/use-android-studio-to-stub-web-api-simple-jwt-login-as-an-example-615ee8efe1b0
http://www.daydev.com/developer/android-developer/android-line-sdk-line-login.html
https://backendless.com/documentation/users/android/users_login_with_google.htm
https://stormpath.com/blog/build-user-authentication-for-android-app
https://developer.amazon.com/docs/login-with-amazon/android-docs.html