ng2文件上传-进展无法进行

Question

我无法显示我的进度。有人在这帮我吗？

ts文件：

ngOnInit() {
    this.uploader.onAfterAddingFile = (file) => {
      console.log('***** onAfterAddingFile ******')
      console.log('file ', file)
    }

    this.uploader.onCompleteItem =  (item:any, response:any, status:any, headers:any) => {
      console.log('ImageUpload:uploaded:', item, status, response);
    };

    this.uploader.onProgressItem = (fileItem: FileItem, progress: any) => {
      console.log(fileItem);
      console.log(progress);
      this.detector.detectChanges();
    };

    this.uploader.onCompleteAll = () => {
      console.log('******* onCompleteAll *********')
    }

    this.uploader.onWhenAddingFileFailed = (item: any, filter: any, options: any) => {
      console.log('***** onWhenAddingFileFailed ********')
    }
  }

Live Demo