private void GetAvatarFromChosenContact() { if (!rainbowApplication.IsConnected()) { return; } string id = contact_id.StringValue; rainbowContacts.GetAvatarFromContactId(id, 80, callback => { if (callback.Result.Success) { byte[] data = callback.Data; if (data != null) { BeginInvokeOnMainThread(() => UpdateContactAvatar(data)); AddStateLine("Avatar has been retrieved"); } else { AddStateLine("This contact doesn't have an avatar yet"); } } else { string logline = String.Format("Impossible to get the avatar of this contact [{1}]:\r\n{0}", Util.SerializeSdkError(callback.Result), id); AddStateLine(logline); log.Warn(logline); } }); }