se.goransson.messengerapp.ChatFragment.java Source code

Introduction

Here is the source code for se.goransson.messengerapp.ChatFragment.java

Source

package se.goransson.messengerapp;

/*
 * Copyright 2014 Andreas Goransson
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 * 
 */

import java.util.ArrayList;

import org.json.JSONException;
import org.json.JSONObject;

import android.app.Fragment;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.ListView;
import android.widget.TextView;

/**
 * 
 * @author andreas
 * 
 */
public class ChatFragment extends Fragment implements Notifiable {

    private static final String TAG = "ChatFragment";

    private TextView otherParty;

    private ListView chat;

    private ArrayList<Message> messages = new ArrayList<Message>();

    private MessageAdapter adapter;

    private EditText text;

    private SendListener sendListener = new SendListener();

    private String sender;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View v = inflater.inflate(R.layout.fragment_chat, container, false);

        otherParty = (TextView) v.findViewById(R.id.fragment_send_otherparty);
        chat = (ListView) v.findViewById(R.id.fragment_send_chat);
        text = (EditText) v.findViewById(R.id.fragment_chat_text);

        adapter = new MessageAdapter(getActivity(), R.layout.message_item_incomming, messages);

        chat.setAdapter(adapter);

        ImageButton send = (ImageButton) v.findViewById(R.id.fragment_chat_send);
        send.setOnClickListener(sendListener);

        return v;
    }

    @Override
    public void onResume() {
        //      MainActivity act = (MainActivity) getActivity();
        otherParty.setText(this.sender);
        loadAllMessages();
        super.onResume();
    }

    @Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
        // TODO Auto-generated method stub
        super.onCreateOptionsMenu(menu, inflater);
    }

    private class SendListener implements OnClickListener {

        @Override
        public void onClick(View v) {
            String recipient = sender;
            String message = text.getText().toString();
            text.setText("");

            ((MainActivity) getActivity()).sendMessage(recipient, message);
        }
    }

    public void newMessage(String json) {
        try {
            JSONObject msg = new JSONObject(json);
            String sender = msg.getString("sender");
            String message = msg.getString("message");

            //         boolean newSender = true;

            if (otherParty.getText().toString().equals(sender)) {
                Message m = new Message();
                m.setSender(sender);
                m.setMessage(message);

                messages.add(m);

                adapter.notifyDataSetChanged();
            }

        } catch (JSONException e) {
            e.printStackTrace();
        }
    }

    @Override
    public void notifyMessage() {
        // TODO get all chats
    }

    @Override
    public void notifyMessage(long id) {
        MainActivity act = (MainActivity) getActivity();
        DBController db = act.getDatabaseController();

        Message msg = db.getMessage(id);

        //      String sender = msg.getSender();

        //      if (sender.equals(this.sender)) {
        messages.add(msg);
        //      }

        adapter.notifyDataSetChanged();

        scrollMyListViewToBottom();
    }

    private void loadAllMessages() {
        MainActivity act = (MainActivity) getActivity();
        DBController db = act.getDatabaseController();

        ArrayList<Message> messages = db.getAllMessagesForSender(sender);

        this.messages.clear();
        this.messages.addAll(messages);

        adapter.notifyDataSetChanged();

        scrollMyListViewToBottom();
    }

    public void setSender(String sender) {
        Log.i(TAG, "setSender: " + sender);
        this.sender = sender;
    }

    private void scrollMyListViewToBottom() {
        chat.post(new Runnable() {
            @Override
            public void run() {
                // Select the last row so it will scroll into view...
                chat.setSelection(adapter.getCount() - 1);
            }
        });
    }
}