My future is not execute using FutureBuilder - flutter

Question

I'm trying to use FutureBuilder but i'm countering an issue, my future is called but not executed. And i couldn't understand why. Does someone has an idea why ?
This is my code:
class TesPage extends StatefulWidget {
#override
_TesPageState createState() => _TesPageState();
}
class _TesPageState extends State<TesPage> {
Future<String> future;
Future<String> futureFunction() async {
try {
await text();
return "Test"; // this is never called
} catch (e) {
return e.toString();
}
}
#override
#mustCallSuper
void initState() {
future = futureFunction();
super.initState();
}
#override
Widget build(BuildContext context) {
return Scaffold(
body: new FutureBuilder<String>(
future: future,
builder: (BuildContext context, snapshot) {
// returning a widget based on the future
},
),
);
}
}
Thank you !
Update
fix my code example

Answer 1

You are not properly waiting for a Future to be resolved.
I suggest you to do the following way:
class TesPage extends StatefulWidget {
#override
_TesPageState createState() => _TesPageState();
}
class _TesPageState extends State<TesPage> {
//Future<String> future;
Future<String> futureFunction() async {
try {
await text();
return "Test"; // this is never called
} catch (e) {
return e.toString();
}
}
//#override
//#mustCallSuper
//void initState() {
// future = futureFunction();
// super.initState();
//}
#override
Widget build(BuildContext context) {
return Scaffold(
body: new FutureBuilder<String>(
future: futureFunction(),
builder: (BuildContext context, snapshot) {
// returning a widget based on the future
},
),
);
}
}
I've commented the unused statements and variables
This way the FutureBuilder will invoke the futureFunction and wait for its result.
Be aware of the states snapshot can be in, check this for complete informations.
Usually you can just check if snapshot.hasData or not, but the class offers you more information about the status of the async computation (aka the futureFunction in this case).