推送通知无法正常使用Android

Question

我正在尝试在我的应用上实施推送通知。我正在使用PHP代码向GCM发送消息。它返回以下信息。

{"multicast_id":5310811111183606373,"success":1,"failure":0,"canonical_ids":0,"results":[{"message_id":"0:1345484510809261%00fbb339d652b5b3"}]} 

但推送通知不会进入我的Android设备。我身边有什么问题吗？

Android清单中的

权限如下所示。

<receiver
            android:name="com.projects.XXXX.GcmReceiver"
            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="com.projects.XXX" />
            </intent-filter>
        </receiver>

<permission
    android:name="com.projects.xxxx.permission.C2D_MESSAGE"
    android:protectionLevel="signature" />

 <uses-permission android:name="com.projects.xxxx.permission.C2D_MESSAGE" />
<uses-permission android:name="com.projects.xxxx.permission.RECEIVE" />

广播接收器

public class GcmReceiver extends BroadcastReceiver {

 public static final int NOTIFICATION_ID = 1;
    private static NotificationManager mNotificationManager;
    NotificationCompat.Builder builder;


@Override
public void onReceive(Context context, Intent intent) {
    // TODO Auto-generated method stub  

    String message = intent.getExtras().getString("message");
    if(message != null){

        generateNotification(context, message);
    }


}