How to use reportProgress in HttpClient in Angular? [duplicate]
You need to use reportProgress: true
to show some progress of any HTTP
request. If you want to see all events, including the progress of transfers
you need to use observe: 'events'
option as well and return an Observable
of type HttpEvent
. Then you can catch all the events(DownloadProgress, Response..etc)
in the component method.Find more details in Angular Official Documentation.
downfile(file: any): Observable<HttpEvent<any>>{ return this.http.post(this.url , app, { responseType: "blob", reportProgress: true, observe: "events", headers: new HttpHeaders( { 'Content-Type': 'application/json' }, ) }); }
Then in component you can catch all the events
as below.
this.myService.downfile(file) .subscribe(event => { if (event.type === HttpEventType.DownloadProgress) { console.log("download progress"); } if (event.type === HttpEventType.Response) { console.log("donwload completed"); }});
Find HttpEventTypes Here.
you will have to add HttpClientModule in your AppModule
you first need to build a request object by creating an instance of HttpRequest class and using reportProgress option.
For more information, please refer: https://alligator.io/angular/httpclient-intro/