1. 确保应用程序已经正确地配置了Google Cloud Messaging (GCM)。
2. 检查设备上的网络连接，确保设备可以从互联网接收数据。
3. 尝试重新安装应用程序，以确保应用程序注册了正确的且唯一的设备标识符。
4. 确保应用程序已经成功注册到GCM服务器并且已经获得了一个推送令牌。
5. 检查应用程序的活动状态，确保应用程序已经处于运行状态而不是被杀死或挂起。
6. 如果应用程序处于沉睡状态，则使用WakefulBroadcastReceiver触发器来激活手机。 以下是一个基本的代码示例：

public class GCMIntentService extendsWakefulBroadcastReceiver {

public static final int NOTIFICATION_ID = 1;

private NotificationManager mNotificationManager;

private NotificationCompat.Builder builder;

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

@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)) { Log.i("GCMIntentService", "Received: " + extras.toString());

sendNotification("Received: " + extras.toString()); } } GcmBroadcastReceiver.completeWakefulIntent(intent); }

private void sendNotification(String 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("GCM Notification") .setStyle(new Notification