Ionic V4 download and show photo with File Plugin not working

@wterrill wrote:

I’m trying to download a picture from the internet via ionic, and then show that picture directly from the native file system using the File plugin. Unfortunately, I can’t get it to work. I think that there might be a problem with the way V4 is interpreting the path in order to bind it to the src attribute.

I wrote a program to test it out… can someone look it over for any mistakes?

Thanks:

TS file

import { Component, OnInit } from '@angular/core';
import { FileTransfer, FileTransferObject } from '@ionic-native/file-transfer/ngx';
import { File } from '@ionic-native/file/ngx'

@Component({
  selector: 'app-scratch2',
  templateUrl: './scratch2.page.html',
  styleUrls: ['./scratch2.page.scss'],
})
export class Scratch2Page implements OnInit {
  private address: string = null;
  private path: string = null;
  private fileNumber = 1;
  private latest = null;
  private toggle = false;

  constructor(
    private fileX: FileTransfer,
    private file: File
  ) { 
    this.path = this.file.dataDirectory + "files/";
  }

  ngOnInit() {
    let filename = this.nameFile()
    this.latest = this.nameFix(filename)
    console.log("1the filename that is returned is ********** ", filename)
  }

  nameFile(){
    let filename = this.path + "file" + this.fileNumber
    return filename
  }

  nameFix(filename){
    return filename.replace(/file:\/\//g, "")
  }

  downloadFile() {
    let filename = this.nameFile();
    console.log("2the filename that is returned is ********** ", filename)
    console.log("Entered download File with url: ", this.address)
    let url = this.address
    const fileTransfer: FileTransferObject = this.fileX.create();
    fileTransfer.download(url, filename).then((entry) => {
        console.log('fileTransfer.download data ** ** ** **:' + JSON.stringify(entry));
        this.fileNumber += 1;
        this.latest = this.nameFix(filename)
    }, (err) => {
      // handle error
      console.log("downloadfile() error: " + JSON.stringify(err));
    });
  }
  toggleToggle(){
    this.toggle = !this.toggle;
  }
}

HTML file

<ion-header>
  <ion-toolbar>
      <ion-buttons slot="start">
          <ion-back-button defaultHref="/"></ion-back-button>
        </ion-buttons>
    <ion-title>scratch2</ion-title>
  </ion-toolbar>
  <ion-toolbar>{{latest}} {{toggle}}</ion-toolbar>
</ion-header>

<ion-content padding>
    <ion-item>
        <ion-label>Address</ion-label>
        <ion-input placeholder="Enter address" [(ngModel)]="address"></ion-input>
      </ion-item>
      <ion-button (click)="downloadFile()"> Download from address</ion-button>
      <ion-button (click)="toggleToggle()">Toggle</ion-button>

    <img *ngIf="toggle" [src]="latest"/>
</ion-content>

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