Have you seen demo of "Hackbook" in the developer.facebook.com ?
You can refer HACKBOOK APP REQUEST FROM HERE.
You can achieve to post the app request to only one friend by below code.
Code:
Bundle params = new Bundle();
JSONObject attachment = new JSONObject();
JSONObject properties = new JSONObject();
JSONObject prop1 = new JSONObject();
JSONObject prop2 = new JSONObject();
JSONObject media = new JSONObject();
JSONStringer actions = null;
try {
attachment.put("name", "YOUR_APP");
attachment.put("href", "http://www.google.com/");
attachment.put("description", "ANY_TEXT");
media.put("type", "image");
media.put("src", "IMAGE_LINK");
media.put("href", "http://www.google.com/");
attachment.put("media", new JSONArray().put(media));
prop1.put("text", "www.google.com");
prop1.put("href", "http://www.google.com");
properties.put("Visit our website to download the app", prop1);
/* prop2.put("href", "http://www.google.com");
properties.put("iTunes Link ", prop2);*/
attachment.put("properties", properties);
Log.d("FACEBOOK", attachment.toString());
actions = new JSONStringer().object()
.key("name").value("APP_NAME")
.key("link").value("http://www.google.com/").endObject();
} catch (JSONException e) {
e.printStackTrace();
}
System.out.println("ACTIONS STRING: "+actions.toString());
System.out.println("ATTACHMENT STRING: "+attachment.toString());
params.putString("actions", actions.toString());
params.putString("attachment", attachment.toString()); // Original
params.putString("to", "YOUR_FRIEND_FACEBOOK_ID");
Utility.mFacebook.dialog(getParent(), "stream.publish", params,new PostDialogListener());
public class PostDialogListener extends BaseDialogListener {
@Override
public void onComplete(Bundle values) {
final String postId = values.getString("post_id");
if (postId != null) {
Toast.makeText(getApplicationContext(), ""+getResources().getString(R.string.facebook_response_msg_posted), Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(getApplicationContext(), ""+getResources().getString(R.string.facebook_response_msg_not_posted), Toast.LENGTH_SHORT).show();
}
}
}
Above code works perfect if you want to post the Apprequest only on One friend's wall. If you want to post on all then you have to make asynckTask which runs for all the friends post and post App request on all walls.
Update
Here is the link in PHP that have done same work to send request to all Facebook friends.
And [here it is clearly explained3 that it is blocked by Facebook to send a Friend Request to more then 15-20 friends.
Now, you have to only one option to do it is, use above code in AsyncTask to send Friend Request to all Friends One-by-One.