Push notification with GCM

Include the library of GCM.jar file in your project

public class GCMIntentService extends GCMBaseIntentService {

    @SuppressWarnings("hiding")
    private static final String TAG = "GCMIntentService";

    public GCMIntentService() {
        super("123456");
    }

    /**
     * Issues a notification to inform the user that server has sent a message.
     */
     private static void generateNotification(Context context, String message)
     {
     int icon = R.drawable.icon;
     long when = System.currentTimeMillis();
     NotificationManager notificationManager = (NotificationManager)
     context.getSystemService(Context.NOTIFICATION_SERVICE);
     Notification notification = new Notification(icon, message, when);
     String title = context.getString(R.string.app_name);
     Intent notificationIntent = new Intent(context, ABCCCC.class);
     // set intent so it does not start a new activity
     notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP |
     Intent.FLAG_ACTIVITY_SINGLE_TOP);
     PendingIntent intent =
     PendingIntent.getActivity(context, 0, notificationIntent, 0);
     notification.setLatestEventInfo(context, title, message, intent);
     notification.flags |= Notification.FLAG_AUTO_CANCEL;
     notificationManager.notify(0, notification);
     }

    @Override
    protected void onError(Context arg0, String arg1) {
        // TODO Auto-generated method stub

    }



    @Override
    protected void onMessage(Context arg0, Intent arg1) {
        Log.e("GCM", "RECIEVED A MESSAGE");
        Log.e("GCM", "RECIEVED A MESSAGE");
        Log.e("GCM", "RECIEVED A MESSAGE");
        Log.e("GCM", "RECIEVED A MESSAGE");
        Log.e("GCM", "RECIEVED A MESSAGE");
        Log.e("GCM", "RECIEVED A MESSAGE");
        Log.e("GCM", "RECIEVED A MESSAGE");
       
        generateNotification(getApplicationContext(),arg1.getStringExtra("message"));
    }

    @Override
    protected void onRegistered(Context arg0, String regId) {
        // TODO Auto-generated method stub
       
        ConstantData.DEVICETOKEN=regId;
       
        Log.e("MY_APP_TAG", "Registered: " + regId);

    }

    @Override
    protected void onUnregistered(Context arg0, String arg1) {
        // TODO Auto-generated method stub

    }

}







SamplePushActivity extends Application {
    /** Called when the activity is first created. */
public void onCreate() {
            super.onCreate();
            //setContentView(R.layout.main);
           
             try{

                 //User device id...
                TelephonyManager tManager = (TelephonyManager)getApplicationContext().getSystemService(Context.TELEPHONY_SERVICE);
                ConstantData.DEVICEID = tManager.getDeviceId();

                //        Log.e("Device id is:-", uid);
               
                }catch (Exception e) {
                    // TODO: handle exception
                }
           
            try {
                       
            Log.e("IN GCM_SAMPLE_PUSH","aa gaya");
            GCMRegistrar.checkDevice(this);
            GCMRegistrar.unregister(this);
            Log.e("info","unregistereddd....." + GCMRegistrar.getRegistrationId(this));
            GCMRegistrar.checkManifest(this);
            if (GCMRegistrar.isRegistered(this)) {
                Log.e("info", GCMRegistrar.getRegistrationId(this));
               
            }
            final String regId = GCMRegistrar.getRegistrationId(this);
   
            Log.e("REG_ID", regId);
   
            if (regId.equals("")) {
                GCMRegistrar.register(this, "CLENT SIDE ID");
                Log.e("info", GCMRegistrar.getRegistrationId(this));
               
            } else {
                Log.e("info", "already registered as" + regId);
            }
   
           
            } catch (Exception e) {
                // TODO: handle exception
            }
        }

}


make reciver in your manifest file

receiver
android:name="com.google.android.gcm.GCMBroadcastReceiver"
android:permission="com.google.android.c2dm.permission.SEND" >
<intent-filter>
<action android:name="com.google.android.c2dm.intent.RECEIVE" />
<action android:name="com.google.android.c2dm.intent.REGISTRATION" />

<category android:name="your project name" />
</intent-filter>
</receiver>

permission in manifest file
internet permission

make service in manifest file
<service android:name=".GCMIntentService" />