title: How to pass image file inside jsonArray using MultipartBuilder
body: <p>I am working with multipart builder and I have to pass an image inside jsonArray.</p>
  
  <p>Then, I have to send that created jsonArray as a value inside MultipartBuilder.</p>
  
  <p>I can pass single image to MultipartBuilder as below : </p>
  
  <pre><code> multipartBuilder.addFormDataPart("image", "im.png", RequestBody.create(MediaType.parse("image/*"), fileImagePath));
  </code></pre>
  
  <p>Now, my jsonArray is as below which I have created manually: </p>
  
  <pre><code>[{"length":"1.1","item_image":"\bitmaptoprint.jpg","quantity":"1","weight":"11","height":"1.1","item_name":"item1","width":"1.1"},{"length":"2.2","item_image":"/Demo###.jpg","quantity":"2","weight":"2","height":"2.2","item_name":"item2","width":"2.2"}]
  </code></pre>
  
  <p>Now, I am passing this jsonArray in multipart builder as below : </p>
  
  <pre><code> .addFormDataPart("array", jsonItemArray.toString());
  </code></pre>
  
  <p>As From above jsonArray, you can see that i am passing image in 'item_image' parameter. But, unfortunately, images can't upload to server.</p>
  
  <p>Is I am doing anything wrong ? Is there any other way available to do so ? </p>
  
  <p>Please, let me help to solve this issue.</p>