设备收到 GCM Android 通知但未显示

尽管通知已在应用程序本身中注册，但我的 Ionic Android 应用程序的 GCM Cloud 消息通知未出现在我的设备的主屏幕中。

我正在使用 npm 模块node-gcm https://www.npmjs.com/package/node-gcm发送推送通知。

var gcm = require('node-gcm');

var message = new gcm.Message({
    priority: 'high',
    contentAvailable: true,
    delayWhileIdle: true,
    timeToLive: 10,
    dryRun: false,
    data: {
        key1: 'message1',
        key2: 'message2'
    },
    notification: {
        title: "Hello, World",
        body: "This is a notification that will be displayed ASAP."
    }
});
var regIds = ['*device id*'];

var sender = new gcm.Sender('*api key*');

sender.send(message, { registrationIds: regIds }, function (err, result) {
    if(err) console.error(err);
    else console.log(result);
});

当我向我的设备 ID 发送推送通知时，我收到了成功的响应：

{ multicast_id: 8406385547051869000,
  success: 1,
  failure: 0,
  canonical_ids: 0,
  results: [ { message_id: '0:1441962697347777%b67ee170f9fd7ecd' } ] }

然后我在 Android Studio 控制台中收到以下消息：

V/GCMBroadcastReceiver﹕ onReceive: com.google.android.c2dm.intent.RECEIVE
V/GCMBroadcastReceiver﹕ GCM IntentService class: com.plugin.gcm.GCMIntentService
V/GCMBaseIntentService﹕ Acquiring wakelock
V/GCMBaseIntentService﹕ Intent service name: GCMIntentService-GCMIntentService-5
D/GCMIntentService﹕ onMessage - context: android.app.Application@2dc6dbff
V/GCMBaseIntentService﹕ Releasing wakelock

在 Google Play 开发者控制台 GCM 调试器中，我的通知似乎也已得到确认。

0: 1441899623073525% b67ee170f9fd7ecd Confirmed

除此之外，当收到通知时，我在 Android Studio 控制台中没有收到任何错误消息。

一旦我发送通知，Ionic 应用程序本身就会注册通知。但是当我退出应用程序时。主屏幕上不显示任何通知。

$rootScope.$on('$cordovaPush:notificationReceived', function (event, notification) {
    alert(notification);
    if (ionic.Platform.isAndroid() && notification.event == "registered") {
            window.localStorage['token'] = notification.regid;
            var params = {
              deviceType: 'android',
              tokenId: notification.regid
            };
            NotificationService.registerDevice(params);
          }

          if (notification.badge) {
            $cordovaPush.setBadgeNumber(notification.badge);
          }

          //notifications payload
          if (notification.foreground == '0') {
            if (notification.view) {
              $timeout(function () {
                $state.go('app.notifications');
              });
            } else {
              if (notification.id) {
                   NotificationService.markNotificationAsRead(notification.id).success(function () {
                  $rootScope.$emit('notifications-read');
                });
              }
              if (notification.chat) {
                $timeout(function () {
                  $state.go('app.message', {id: notification.chat});
                });
              } else if (notification.post) {
                $timeout(function () {
                  $state.go('app.singlePost', {id: notification.post});
                });
              } else if (notification.group) {
                $timeout(function () {
                  $state.go('app.group', {id: notification.group});
                });
              }
            }
          }
    });

您必须在您的notification block:

notification: {
    title: "Hello, World",
    body: "This is a notification that will be displayed ASAP.",
    icon: "@drawable/ic_launcher"
}