title: What should be the image/bitmap size in Android BigPictureStyle push notification?
body: <p>I want some clarity on image size of BigPictureStyle bitmap in notification. </p>
  
  <p>I have gone through some tutorials but could not find the size specifications about this bitmap.</p>
  
  <p>Some told to have 2:1 aspect ratio. </p>
  
  <p>I want some clarity like what is recommended size of bitmap/image in </p>
  
  <pre><code> NotificationCompat.BigPictureStyle s = new NotificationCompat.BigPictureStyle().bigPicture(bitmap_image);
          s.setSummaryText("Summary text appears on expanding the notification");
           notificationBuilder.setStyle(s);
  </code></pre>
  
  <p>please guide me through this.</p>