How to Login into Gmail using OAuth in Android Application?

Question

I am Developing an application which uses Login to Gmail.I gone through all tutorials,stackoverflow questions which is tagged under OAuth 2.0 and documents that

Answer 1

Consider using "localhost:port" as the redirect uri instead of urn:ietf:wg:oauth:2.0:oob& (for more details refer to https://developers.google.com/youtube/v3/guides/authentication#installed-apps) and trap this URL being loaded in the webview in the callback: public boolean shouldOverrideUrlLoading (WebView view, String url).