Here is how to share photos and posts in Friend Caster app.
1. Long-press the post that the photo is in
2. Select “Share” from the popup menu
3. Select “Edit Photo” and edit if you wish. Otherwise, select the album to upload to.
4. Select “Upload” to upload the photo
You will then be able to share the photo. Facebook do not allow us to directly share photos to another person or application, so we must upload the photo to one of your albums in order to be able to share it.