如何通过 API 从服务器获取数据调用生命周期挂钩并且不影响其他服务

Question

//通过使用生命周期挂钩我正在获取数据，但另一种方法无法进行签名

ngDoCheck() {
this.FetchUsersInQueue(this.commonService.getUser());
}
onSignin() {
this.serverService.LoginMobileUser(this.modelSignIn).subscribe(data => { }, error => { }); 
}

Answer 1

thanks to all, I got the solution using constructor life cycle hook, refresh data list using Rxjs library
import 'rxjs/Rx';
import {
    Observable
} from 'rxjs';
import {
    map
} from 'rxjs/operators';
constructor() {
    this.pollingData = Observable.interval(5000)
        .switchMap(() => http.post('your http url', localVar)).map((data) => data.json())
        .subscribe((data) => {
            this.data = data;
        });
}