Looking for logging into the Google Sign In Android 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 Google Sign In Android site. After that you can login as usual with your login credentials.
https://developers.google.com/identity/sign-in/android/start-integrating
https://developers.google.com/identity/sign-in/android/
https://firebase.google.com/docs/auth/android/google-signin?hl=ja
http://grandbig.github.io/blog/2015/11/08/google-sign-in-android/
https://qiita.com/syarihu/items/1c67816ad926f08d76d8
https://qiita.com/linhnk/items/dec28e3278cf14dad666
https://developer.android.com/training/sign-in/
https://stackoverflow.com/questions/33583326/new-google-sign-in-android
https://github.com/googlesamples/google-services/tree/master/android/signin
https://www.milk-island.net/translate/ggd/identity/sign-in/android/sign-in.html
https://blog.spacemarket.com/code/googlesignin_oauth/
https://androidclarified.com/google-signin-android-example/
http://itexplorer.hateblo.jp/entry/20170629-google-sign-in-info