service.ts

test() {
this.http.get("https://myapi.com/?question=3", {headers: headers})
          .map(res => res.json()).subscribe(data => {
            this.rcvdpayload = data.data.children; console.log(this.rcvdpayload);
          }, error => {
              console.log(JSON.stringify(error.json()));
          });
}

view.ts

ionViewWillEnter(){
        this.compnentvar = this.services.getQuestion();
  };