angular - Angular 6 中 ng2-file-upload 的进度条

Question

我想为我的文件上传创建一个进度条。

我正在使用的上传是：https://www.npmjs.com/package/ng2-file-upload。

app.component.html

<div class="container-fluid">
    <div class="row">
        <div class="col-md-12">
            <input type="file" name="myFile" ng2FileSelect [uploader]="uploader" />
        </div>
    </div>
    <div class="row">
        <div class="col-md-12">
            <button type="button" class="btn btn-success btn-s" (click)="uploader.uploadAll()" [disabled]="!uploader.getNotUploadedItems().length">
                Upload an Image
            </button>
        </div>
    </div>
</div>

app.component.ts

import { Component, ViewChild } from '@angular/core';
import { FileUploader, FileSelectDirective } from 'ng2-file-upload';

const URL = 'url to API';
@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {
public uploader: FileUploader = new FileUploader({ url: URL, itemAlias: 'myFile' });

  ngOnInit() {
    this.uploader.onAfterAddingFile = (file) => { file.withCredentials = false; };
    this.uploader.onCompleteItem = (item: any, response: any, status: any, headers: any) => {
      console.log('ImageUpload:uploaded:', item, status, response);
      alert('File uploaded successfully');
    };
 }
}

一切正常，但我想放一个进度条，只有这个。

Answer 1

你可以在这里收听进展

this.uploader.onProgressItem = (progress: any) => {
    console.log(progress['progress']);
};

Answer 2

在您的app.component.html包括：

<div class="progress" style="margin-bottom: 0;">
<div class="progress-bar" role="progressbar" [ngStyle]="{ 'width': uploader.progress + '%' }"></div>
</div>