title: Image upload issue on Ionic DevApp
body: <p>I am using DevApp from Ionic team to test application. And want to implement just an image upload functionality, but cannot get image from device by FILE_URI.</p>
  
  <p>My ionic info:</p>
  
  <pre><code>    @ionic/cli-utils  : 1.19.0
      ionic (Ionic CLI) : 3.19.0
  
  global packages:
  
      cordova (Cordova CLI) : 8.0.0
  
  local packages:
  
      @ionic/app-scripts : 3.1.6
      Cordova Platforms  : android 6.3.0 ios 4.4.0
      Ionic Framework    : ionic-angular 3.9.2
  
  System:
  
      Android SDK Tools : 26.1.1
      Node              : v6.11.1
      npm               : 3.10.10
      OS                : Windows 7
  
  Environment Variables:
  
      ANDROID_HOME : C:\Android\sdk
  
  Misc:
  
      backend : legacy
  </code></pre>
  
  <p>I want to choose a picture from photo library or take a new on using camera, then show the image to the user. But it cannot find image by image path.</p>
  
  <pre><code>takePicture(sourceType) {
      const options: CameraOptions = {
        quality: 100,
        encodingType: this.camera.EncodingType.JPEG,
        mediaType: this.camera.MediaType.PICTURE,
        sourceType: sourceType,
        destinationType: this.camera.DestinationType.FILE_URI
      }
  
      this.camera.getPicture(options).then((image) =&gt; {
        this.form.imageData = image;
  
       }, (err) =&gt; {
          console.log('error: ' + JSON.stringify(err));
       });
    }
  </code></pre>
  
  <p>And in the page I pass the file_uri to the  component:</p>
  
  <pre><code>&lt;img [src]="form.imageData" [hidden]="!form.imageData" /&gt;
  {{form.imageData}}
  </code></pre>
  
  <p>form.imageData is a text data:</p>
  
  <pre><code>file:///var/mobile/Containers/Data/Application/.../tmp/photo_002.jpg
  </code></pre>
  
  <p>But it does not show any image. </p>
  
  <p>What I am doing wrong? How to test image upload/preview functionality using Ionic DevApp?</p>
  
  <p>PS. I can preview image using its base64 data instead of file uri, but for upload I should use file_uri.</p>