1、ionic start sendnotify blank –v2

2、cordova plugin add cordova-plugin-whitelist

3、src/index.html

4、ionic serve  

====if success=====

5、home.ts

add

import { Http, Headers, RequestOptions } from ‘@angular/http’;

import ‘rxjs/add/operator/map’;

add   constructor(private http: Http

sendnotify_devicetoken(devictoken) {

      let url = ‘https://fcm.googleapis.com/fcm/send';

      let headers = new Headers({ 

        ‘Content-Type’: ‘application/json’,

        ‘Authorization’: ‘key=your key’

      });

      let options = new RequestOptions({ headers: headers });

      let body = {

        “notification”:{

          “title”:“Notification title”,

          “body”:“Notification body”,

          “sound”:“default”,

          “click_action”:“FCM_PLUGIN_ACTIVITY”,

          “icon”:“fcm_push_icon”

        },

        “data”:{

          //“param1”:“value1”,

          //“param2”:“value2”

        },

        //“to”:"/topics/topicExample",

        “to”: devictoken,

        “priority”:“high”,

        “restricted_package_name”:""

      };

      this.http.post(url, body, options).map(

          (res) => {return res}//res.json()

      ).subscribe(

          data => {

            alert(data);

          },

          err => {

            alert(“ERROR!: “+err);

          }

      );

a. devictoken： see http://sueboy.blogspot.tw/2017/01/ionic2-fcm-get-device-token.html

b. your key：firebase console -> project setting -> cloud messaging ->

have two new and old api key.   Use new is better

6、ionic serve  push button, then send success