Improve Slideshow and adding sharing and reposting images

Views/NewPost.js

@@ -11,7 +11,8 @@ import Media from '../components/Media';
 
 let NewPostView = (props) => {
     let [postContent, setPostContent] = useState('');
-    let [extraContent, setExtraContent] = useState([]);
+    let initialContent = props.route.params.intialContent;
+    let [extraContent, setExtraContent] = useState([initialContent]);
     let [toProfile, setToProfile] = useState([]);
     const [photo, setPhoto] = React.useState(null);
     const navigation = useNavigation();