OneSignal如何在ionic2中向特定用户发送推送通知

ionic cordova plugin add onesignal-cordova-plugin
npm install @ionic-native/onesignal

import { OneSignal } from '@ionic-native/onesignal/ngx';

@NgModule({
  ...
  providers: [
    ...
    OneSignal
    ...
  ]
  ...
})
export class AppModule { }

import { OneSignal } from '@ionic-native/onesignal/ngx';

@Component({
  selector: 'app-home',
  templateUrl: 'home.page.html',
  styleUrls: ['home.page.scss'],
})
export class HomePage {

  constructor(private oneSignal: OneSignal) { }

  ...
}

this.oneSignal.postNotification({
  include_player_ids: ['PLAYER_ID'],
  contents: { en: 'Hello, this is a push notification!' }
}).then(() => {
  console.log('Notification sent successfully.');
}).catch((error) => {
  console.error('Error sending notification:', error);
});