尽管该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消息传递通知未出现在设备的主屏幕中.

我正在使用npm模块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);
});

当我向设备的ID发送推送通知时,我得到一个成功的响应：

{ 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,我的通知似乎也已被确认.

0: 1441899623073525% b67ee170f9fd7ecd Confirmed

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

发送完通知后,Ionic应用程序本身就会注册通知.但是,当我离开应用程序时.主屏幕中没有显示通知.

$rootScope.$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});
                });
              }
            }
          }
    });

解决方法:

您必须在通知栏中添加图标字段：

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