我正在尝试使用onesignal-cordova-plugin，fcm在ionic v1中实现推送通知。但是它不起作用。我的app.js在下面给出

Question

var notificationOpenedCallback = function（jsonData）{         console.log（'didReceiveRemoteNotificationCallBack：'+ JSON.stringify（jsonData））;         };

    window.plugins.OneSignal.init("MY APP ID",
    {googleProjectNumber:"Project Number"},
    notificationOpenedCallback);

  // Show an alert box if a notification comes in when the user is in your app.
    window.plugins.OneSignal.enableInAppAlertNotification(true);