如何在ionic 4中将参数从tab容器传递到一个tab

const routes: Routes = [
  {
    path: 'tabs',
    component: TabsPage,
    children: [
      {
        path: 'tab1',
        children: [
          {
            path: '',
            loadChildren: './tab1/tab1.module#Tab1PageModule'
          }
        ]
      },
      {
        path: 'tab2/:param', // 添加参数占位符
        children: [
          {
            path: '',
            loadChildren: './tab2/tab2.module#Tab2PageModule'
          }
        ]
      },
      {
        path: '',
        redirectTo: '/tabs/tab1',
        pathMatch: 'full'
      }
    ]
  },
  {
    path: '',
    redirectTo: '/tabs/tab1',
    pathMatch: 'full'
  }
];

import { NavController } from '@ionic/angular';

constructor(private navCtrl: NavController) {}

goToTab2() {
  const param = 'Hello from Tab1';
  this.navCtrl.navigateForward(`/tabs/tab2/${param}`);
}

import { ActivatedRoute } from '@angular/router';

constructor(private route: ActivatedRoute) {}

ngOnInit() {
  this.route.paramMap.subscribe(params => {
    const param = params.get('param');
    console.log(param); // 输出传递的参数
  });
}