无法在android中设置推送通知声音

我已经创建了推送通知应用程序，我从GCM服务获取消息，但推送通知声音不起作用 . 当我收到通知时，我需要播放声音 . 我已将我的代码发布到任何人的帮助下我...

//receiver class//


import android.app.Activity;
import android.app.NotificationManager;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.media.RingtoneManager;
import android.net.Uri;
import android.support.v4.content.WakefulBroadcastReceiver;
import android.widget.Toast;

public class GcmBroadcastReceiver extends WakefulBroadcastReceiver {

  @Override
  public void onReceive(Context context, Intent intent) 
  {
    ComponentName comp = new ComponentName(context.getPackageName(),GCMNotificationIntentService.class.getName());

    startWakefulService(context, (intent.setComponent(comp)));

    setResultCode(Activity.RESULT_OK);

    generateNotification(context);

    System.out.println("received push notification");

    Toast.makeText(context,"received notification",Toast.LENGTH_LONG).show();
  }

private void generateNotification(Context context)
{
    // TODO Auto-generated method stub
    /*NotificationManager mBuilder=(NotificationManager)context.getSystemService(context.NOTIFICATION_SERVICE);

    Uri notificationsound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);

    mBuilder.setSound(notificationsound);
    */
}

protected void onHandleIntent(Intent intent) {
    // TODO Auto-generated method stub

}
}




package com.everest.jewellerapp;

import android.app.IntentService;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.graphics.Color;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.Bundle;
import android.os.SystemClock;
import android.support.v4.app.NotificationCompat;
import android.util.Log;
import com.google.android.gms.gcm.GoogleCloudMessaging;

public class GCMNotificationIntentService extends IntentService
{


  public static final int NOTIFICATION_ID = 1;

  private NotificationManager mNotificationManager;

  NotificationCompat.Builder builder;

  public GCMNotificationIntentService() 
  {
    super("GcmIntentService");
  }

  public static final String TAG = "GCMNotificationIntentService";

  @Override
  protected void onHandleIntent(Intent intent) 
  {
    Bundle extras = intent.getExtras();

    GoogleCloudMessaging gcm = GoogleCloudMessaging.getInstance(this);

    String messageType = gcm.getMessageType(intent);

    if (!extras.isEmpty()) 
    {
      if (GoogleCloudMessaging.MESSAGE_TYPE_SEND_ERROR.equals(messageType)) 
      {
        sendNotification("Send error: " + extras.toString());
      }
      else if (GoogleCloudMessaging.MESSAGE_TYPE_DELETED.equals(messageType)) 
      {
        sendNotification("Deleted messages on server: "
            + extras.toString());
      } 
      else if (GoogleCloudMessaging.MESSAGE_TYPE_MESSAGE.equals(messageType)) 
      {

        for (int i = 0; i < 3; i++) {
          Log.i(TAG,
              "Working... " + (i + 1) + "/5 @ "
                  + SystemClock.elapsedRealtime());
          try 
          {
            Thread.sleep(5000);
          } 
          catch (InterruptedException e)
          {
          }

        }
        Log.i(TAG, "Completed work @ " + SystemClock.elapsedRealtime());

        sendNotification("Message Received from Google GCM Server: "+ extras.get(Config.MESSAGE_KEY));



        Log.i(TAG, "Received: " + extras.toString());
      }
    }
    GcmBroadcastReceiver.completeWakefulIntent(intent);
  }

  private void sendNotification(String msg) 
  {
    Log.d(TAG, "Preparing to send notification...: " + msg);

    mNotificationManager = (NotificationManager) this.getSystemService(Context.NOTIFICATION_SERVICE);

    PendingIntent contentIntent = PendingIntent.getActivity(this, 0,new Intent(this, MainActivity.class), 0);

    NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this)
        .setSmallIcon(R.drawable.ic_launcher)
        .setContentTitle("ijeweller")
        .setStyle(new NotificationCompat.BigTextStyle().bigText(msg))
        .setContentText(msg);

    mBuilder.setContentIntent(contentIntent).setContentTitle("").setContentText("");
    mBuilder.setVibrate(new long[] { 1000, 1000, 1000, 1000, 1000 }); 
    mBuilder.setLights(Color.RED, 3000, 3000); 


    Uri notificationsound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);

    mBuilder.setSound(notificationsound);


    mNotificationManager.notify(NOTIFICATION_ID, mBuilder.build());

    Log.d(TAG, "Notification sent successfully.");
  }
}

权限

<uses-permission android:name="android.permission.INTERNET" />

<!-- GCM requires a Google account. -->
<uses-permission android:name="android.permission.GET_ACCOUNTS" />

<!-- Keeps the processor from sleeping when a message is received. -->
<uses-permission android:name="android.permission.WAKE_LOCK" />

<!-- Creates a custom permission so only this app can receive its messages. -->
<permission
    android:name="com.everest.jewellerapp.permission.C2D_MESSAGE"
    android:protectionLevel="signature" />

<uses-permission android:name="com.everest.jewellerapp.permission.C2D_MESSAGE" />

<!-- This app has permission to register and receive data message. -->
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />

<!-- Network State Permissions to detect Internet status -->
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

<!-- Permission to vibrate -->
<uses-permission android:name="android.permission.VIBRATE" />

<uses-permission android:name="android.permission.READ_PHONE_STATE"/>

<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" /> 
      <uses-permission android:name="android.permission.CALL_PHONE"/>
      <uses-permission android:name="android.permission.RECEIVE_MMS" />
      <uses-permission android:name="android.permission.RECEIVE_SMS" />
      <uses-permission android:name="android.permission.READ_SMS" />