title: Routing to Specific flutter Screen on click notification
body: <p>How to go to specific screen on click notification? i used cloud function in javascript and when i click on the notification, it open me the app not the specific screen</p>
  
  <pre><code> _fcm.configure(
    onMessage: (Map&lt;String, dynamic&gt; message) async {
      print("onMessage: $message");
      getOrder(message['data']['order_id']);
      showDialog(
        context: context,
        builder: (context) =&gt; AlertDialog(
          content: ListTile(
            title: Text(message['notification']['title']),
            subtitle: Text(message['notification']['body']),
          ),
          actions: &lt;Widget&gt;[
            FlatButton(
              child: Text('Ok'),
              onPressed: () =&gt; Navigator.of(context).pop(),
            ),
          ],
        ),
      );
    },
    onLaunch: (Map&lt;String, dynamic&gt; message) async {
      print("onLaunch: $message");
      Navigator.push(
          context,
          MaterialPageRoute(
              builder: (context) =&gt; DetailOrder()));
    },
    onResume: (Map&lt;String, dynamic&gt; message) async {
      print("onResume: $message");
      Navigator.push(
          context,
          MaterialPageRoute(
              builder: (context) =&gt; DetailOrder()));
    },
  );
  </code></pre>