The code demonstrates how to implement OAuth 2.0 with Google API in Phonegap with ChildBrowser Plugin. Below are different screenshots of the App. The App authorize a Google Tasks API using OAuth 2.0 and then it accesses the User's Tasks and displays them in a list view.

You can download and install the App from Phonegap Build directly:
https://build.phonegap.com/apps/209209
Note: You can also fork project, customize and then build your app using PhoneGap build system.

The online tutorial explaining the code are posted in the following places (both are same):
http://liquidlabs.ca/2012/09/09/oauth-google-api-phonegap-childbrowser-jquery-mobile/

OR

http://www.itsalif.info/content/oauth-google-api-gapi-phonegap-childbrowser-jquery

You can also download fully functional TODO app, which uses Google's cloud based Tasks API. Currently we've released this only on Google Play store.

[Quick Task on Google™ Play][PlayStoreLink] [PlayStoreLink]: https://play.google.com/store/apps/details?id=ca.liquidlabs.quicktask

Author: Abdullah Rubiyath, Hossain Khan
The code is licensed under MIT License.
Copyright (c) 2012 Liquid Labs Inc.