title: post array of objects that contains image data as multipart through retrofit in android
body: <p>I have to post some data from android in this form</p>
  
  <pre><code>[
     {
      "title": "song's title",
      "artists": "artist1, artist2,....",
      "album": "album name",
      "genre": "genre name",
      "added_at": "datetime etc",
      "counter": x (int value i.e. 3),
      "cover_art": "image data"(File)
     },
     {
      "title": "song's title",
      "artists": "artist1, artist2,....",
      "album": "album name",
      "genre": "genre name",
      "added_at": "datetime etc",
      "counter": x (int value i.e. 3),
      "cover_art": "image data"(File)
     },
     .......and so on.
  ]
  </code></pre>
  
  <p>How can i post this from retrofit. From what i know is that one can upload images as Multipart in retrofit but here i have json array which contains Image data. 
  Please help , thanks in advance.</p>