title: firebase storage how to dispaly image
body: <p>I'm trying to fetch images out of firebase storage with url and <code>Image.network()</code>.</p>
  <p>But somehow I stuck.</p>
  <p>I use this example from firebase storage documentation:</p>
  <pre><code>   Future downloadURLExample() async {
     String downloadURL = await firebase_storage.FirebaseStorage.instance
        .ref('users/123/avatar.jpg')
        .getDownloadURL();
  
    // Within your widgets:
    // Image.network(downloadURL);
  return downloadURL;
  
  }
  </code></pre>
  <p>But I dont know how do I get this String downloadURL into my container and Image.network.</p>
  <p>I try to do it like this:</p>
  <pre><code>Container(
   width: 200,
   height: 200,
   child: Image.network(downloadURL),
  ),
  </code></pre>
  <p>But it doesnt work. What am I missing?</p>