https://github.com/facebook/facebook-android-sdk this is the link of the facebook-android-sdk, a project that is used as a library, This SDK contains three folders examples, facebook and tests, the library to use is facebook. I hope you serve.
when you've managed to connect with facebook these two methods could be used to update your status and post your links.
public void addStatus(String comment){
Bundle params = new Bundle();
params.putString("method", "status.set");
params.putString("status", comment);
mAsyncRunner.request(null, params, "POST", new StatusListener(this, this), null);
}
public void addImageLink(String url, String comment){
Bundle params = new Bundle();
params.putString("method", "links.post");
params.putString("url", url);
params.putString("comment", comment);
mAsyncRunner.request(null, params, "POST", new LinkPostListener(this, this), null);
}