ionic4——返回跳转

【一】需要返回数据

    <ion-buttons slot="start" >
      <ion-back-button (click)="back()" defaultHref=""></ion-back-button>
    </ion-buttons>

import { Router } from '@angular/router';
constructor(    
    public http: InterceptorService, public route: ActivatedRoute,public router: Router) {
}  

back() {
    this.oid = localStorage.getItem("oid");
    this.router.navigate(['/contractcheck'],{
      queryParams:{
        oId: this.oid
      }
    });
 }

或者

ionViewWillEnter() {
    this.SelectAwardById(this.organizationId);
  }

【二】不需要数据返回，这届返回

    <ion-buttons slot="start">
      <ion-back-button (click)="back()" defaultHref=""></ion-back-button>
    </ion-buttons>

import { Router } from '@angular/router';
back() {
    this.router.navigateByUrl('/tabs/ccheck');
 }