Android Open Source - SimpleAndroidChat Abstract Activity

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License

The source code is released under:

GNU General Public License

If you think the Android project SimpleAndroidChat listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.

Java Source Code

package com.anderscore.simpleandroidchat;
// w  w w  . ja v  a 2  s  . c o m
import android.app.Activity;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.os.Message;
import android.os.Messenger;

import com.anderscore.simpleandroidchat.Constants.Event;
import com.anderscore.simpleandroidchat.MessengerService.LocalBinder;

/**
 * 
 * @author max Attribut bound, Service
 */
public abstract class AbstractActivity extends Activity {

  boolean mBound  = false;
  LocalBinder mBinder  = null;      
    
  ServiceConnection serviceConnection = new ServiceConnection() {    
    @Override
    public void onServiceConnected(ComponentName name, IBinder service) {
      mBinder  = (LocalBinder) service;
      mBinder.registerMessenger(messenger);
      onServiceAvailable();
    }
    @Override
    public void onServiceDisconnected(ComponentName name) {
      mBinder.unregisterMessenger(messenger);
      mBinder  = null;
    }

  };
  
  private Messenger messenger = new Messenger(new Handler(new Handler.Callback() {
    
    @Override
    public boolean handleMessage(Message msg) {
      switch (msg.what) {
      case Event.CONTACT:
        notifyContact((Contact)msg.obj);
        return true;
        
      case Event.MSG:
        notifyMsg((ChatMsg)msg.obj);
        return true;

      default:
        return false;
      }
    }
  }));  
  abstract void onServiceAvailable();
  abstract void notifyMsg(ChatMsg chatMsg);
  abstract void notifyContact(Contact contact);

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    bind();
  }  
  @Override
  protected void onStop() {
    super.onStop();
    unbind();
  }
  private void bind() {
    if(mBound) return;
    mBound  = true;
    Intent intent = new Intent(this, MessengerService.class);
    startService(intent);
    bindService(intent, serviceConnection, Context.BIND_AUTO_CREATE);
  }  
  private void unbind() {
    if(!mBound) return;
    mBound = false;
    unbindService(serviceConnection);
  }
}

Java Source Code List