Android Open Source - daisy_main C V Chat

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License

The source code is released under:
GNU General Public License
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Java Source Code

package de.uvwxy.daisy.nodemap.guiviews;
/*from   w  w  w  . j a v  a  2s  .co m*/
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;

import com.squareup.otto.Subscribe;

import android.app.AlertDialog;
import android.content.DialogInterface;
import android.location.Location;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import de.uvwxy.daisy.nodemap.R;
import de.uvwxy.daisy.nodemap.guicontent.CM;
import de.uvwxy.daisy.nodemap.listobjects.ChatMessageArrayAdapter;
import de.uvwxy.daisy.proto.Messages.ChatMessage;
import de.uvwxy.daisy.proto.ProtoHelper;
import de.uvwxy.daisy.protocol.busmessages.NeedsSync;

public class CVChat extends CV {
  public ArrayList<de.uvwxy.daisy.proto.Messages.ChatMessage> chatMessages = null;

  public ChatMessageArrayAdapter chatMessagesAdapter;

  private EditText tvChatInput;

  public CVChat(String id, String title, int iconID) {
    super(id, title, iconID);
  }

  @Subscribe
  public void addChatMessageToView(ChatMessage m) {
    chatMessages.add(m);
    sortChat();
    chatMessagesAdapter.notifyDataSetChanged();
  }

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    // refresh all chat messages
    chatMessages = new ArrayList<ChatMessage>();
    chatMessages.addAll(CM.DAISY.getChatMessageDataList());
    sortChat();

    View rootView = inflater.inflate(R.layout.content_view_chat, container, false);
    ListView lvMessages = (ListView) rootView.findViewById(R.id.lvChat);
    tvChatInput = (EditText) rootView.findViewById(R.id.tvChatInput);

    Button btnChatSend = (Button) rootView.findViewById(R.id.btnChatSend);

    btnChatSend.setOnClickListener(new OnClickListener() {
      @Override
      public void onClick(View v) {
        sendChat();
      }
    });

    chatMessagesAdapter = new ChatMessageArrayAdapter(this, CM.CTX, chatMessages);

    lvMessages.setTranscriptMode(ListView.TRANSCRIPT_MODE_ALWAYS_SCROLL);
    lvMessages.setStackFromBottom(true);
    lvMessages.setAdapter(chatMessagesAdapter);

    CM.BUS.register(this);

    // userAdapter
    return rootView;
  }

  @Override
  public void onDestroyView() {
    super.onDestroyView();
    CM.BUS.unregister(this);
  }

  private void sendChat() {
    if (tvChatInput == null) {
      return;
    }

    if (tvChatInput.getText().toString().equals("")) {
      return;
    }

    Location l = null;

    l = CM.LOC.getLastLocation();

    if (l == null) {
      AlertDialog.Builder alertDialog = new AlertDialog.Builder(CM.CTX);

      alertDialog.setPositiveButton("Retry", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
          sendChat();
        }
      });

      alertDialog.setNegativeButton("Cancel", null);
      alertDialog.setMessage("Missing location, please try again until this application was able to obtain a fix.");
      alertDialog.setTitle("Location error.");
      alertDialog.setNeutralButton("Fake Location", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
          Location fake = new Location("Fake");
          sendMessage(fake);
        }
      });
      alertDialog.show();

      return;
    }

    sendMessage(l);

  }

  public void sendMessage(Location l) {

    ChatMessage.Builder cm = ChatMessage.newBuilder();
    cm.setLocation(ProtoHelper.androidLocationToProtoLocation(l));
    cm.setMessage(tvChatInput.getText().toString());
    cm.setTag(CM.DAISY.getNextTag());
    cm.setTimestamp(System.currentTimeMillis());
    chatMessagesAdapter.notifyDataSetChanged();
    tvChatInput.setText("");

    // will receive this chat message via event bus, and post to ui
    CM.BUS.post(cm.build());
    CM.BUS.post(new NeedsSync());
  }

  void sortChat() {
    Collections.sort(chatMessages, new Comparator<ChatMessage>() {

      @Override
      public int compare(ChatMessage lhs, ChatMessage rhs) {
        return Double.compare(lhs.getTimestamp(), rhs.getTimestamp());
      }
    });
  }
}
Java Source Code List
