Ionic2-没有Push的提供者

我正在按照这个教程:https://medium.com/@ankushaggarwal/push-notifications-in-ionic-2-658461108c59试图用Firebase实现推送通知,我想我做的一切都正确但现在当我运行我的应用程序时得到一个异常:错误:0:0引起:没有Push的提供者!

任何想法我该如何解决？

有我的app.component.ts和app.module.ts

app.module.ts:

import { NgModule, ErrorHandler } from '@angular/core';
import { IonicApp, IonicModule, IonicErrorHandler } from 'ionic-angular';
import { MyApp } from './app.component';
import { StatusBar } from '@ionic-native/status-bar';
import { SplashScreen } from '@ionic-native/splash-screen';
{Only App Pages ...}

@NgModule({
declarations: [
    MyApp,
    {Only App Pages ...}
],
imports: [
    IonicModule.forRoot(MyApp)
],
bootstrap: [IonicApp],
entryComponents: [
    MyApp,
    {Only App Pages...}
],
providers: [
    StatusBar,
    SplashScreen,
    {provide: ErrorHandler, useClass: IonicErrorHandler}
]
})
export class AppModule {}

App.component.ts:

import {Component} from "@angular/core";
import {AlertController, Nav, Platform} from "ionic-angular";
import {StatusBar} from "@ionic-native/status-bar";
import {SplashScreen} from "@ionic-native/splash-screen";
import {Push, PushObject, PushOptions} from "@ionic-native/push";
import { HomePage } from '../pages/home/home';

@Component({
  templateUrl: 'app.html'
})
export class MyApp {
  rootPage:any = HomePage;

  constructor(public platform: Platform, 
                   public statusBar: StatusBar, 
                   public splashScreen: SplashScreen, 
                   public push: Push,
                   public alertCtrl: AlertController) {

    platform.ready().then(() => {
      statusBar.styleDefault();
      splashScreen.hide();
      this.initPushNotification();
    });
  }

  initPushNotification() {
    if (!this.platform.is('cordova')) {
      console.warn("Push notifications not initialized. Cordova is not available - Run in physical device");
      return;
    }
    const options: PushOptiOns= {
      android: {
        senderID: "883847118563"
      }
    };
    const pushObject: PushObject = this.push.init(options);

    pushObject.on('registration').subscribe((data: any) => {
      console.log("device token ->", data.registrationId);

      let alert = this.alertCtrl.create({
                  title: 'device token',
                  subTitle: data.registrationId,
                  buttons: ['OK']
                });
                alert.present();

    });

    pushObject.on('notification').subscribe((data: any) => {
      console.log('message', data.message);
      //if user using app and push notification comes
      if (data.additionalData.foreground) {
        // if application open, show popup
        let cOnfirmAlert= this.alertCtrl.create({
          title: 'New Notification',
          message: data.message,
          buttons: [{
            text: 'Ignore',
            role: 'cancel'
          }, {
            text: 'View',
            handler: () => {
              //TODO: Your logic here
            //  this.nav.push(DetailsPage, {message: data.message});
            }
          }]
        });
        confirmAlert.present();
      } else {
        //if user NOT using app and push notification comes
        //TODO: Your logic on click of push notification directly
      //  this.nav.push(DetailsPage, {message: data.message})
      let alert = this.alertCtrl.create({
                  title: 'clicked on',
                  subTitle: "you clicked on the notification!",
                 buttons: ['OK']
                });
                alert.present();
        console.log("Push notification clicked");
      }
    });

    pushObject.on('error').subscribe(error => console.error('Error with Push plugin', error));
  }
}

提前感谢您的帮助.

您需要Push在app.module.ts中设置为提供程序

@NgModule({
declarations: [
    MyApp,
    {Only App Pages ...}
],
imports: [
    IonicModule.forRoot(MyApp)
],
bootstrap: [IonicApp],
entryComponents: [
    MyApp,
    {Only App Pages...}
],
providers: [
    StatusBar,
    SplashScreen,
    Push,//here
    {provide: ErrorHandler, useClass: IonicErrorHandler}
]
})
export class AppModule {}

在离子本机v3.x中,所有插件都设置为提供程序,并通过在构造函数中注入来使用.