Try adding
.setApplicationName("") .setName("test:")
FacebookDialog shareDialog = new FacebookDialog.ShareDialogBuilder(this)
.setApplicationName("<app name>")
.setName("test:")
.setCaption(caption)
.setDescription(getString(R.string.facebook_description))
.setPicture(getString(R.string.facebook_picture))
.setLink(getString(R.string.url_google_play) + getPackageName())
.build();