Android Facebook Sharing details how to enable sharing from your Android app to Facebook. When someone shares from your app, their content appears on their Timeline and may appear in their friends’ News Feeds.
Versions 4.0+ of the Facebook SDKs have new models for sharing content. Each type of content people want to share has a class you can use to represent it. After you model the content, add a sharing interface to your app.
The Like button is a quick way for people to share content with their friends. A tap on the Like button will ‘like’ pieces of content from your app and share them on Facebook. The Like button can be used to like a Facebook Page or any Open Graph object and can be referenced by URL or ID. To add a Like button add the following code snippet to your view: