I want to use string value in my code but I am unable to do so. Please help, I am new to flutter.
// Database (db) is database sqlite
// Dog class has a String field name
Text func() async{
var dog = await db.firstDog();
return Text(dog.name);
}
The return type Text isn't a Text, as defined by the method func.dart(return_of_invalid_type).
use Future
ForExample
Future<Text> func() async{
String d = await getTest();
return Text(d);
}
Prerequisites
What you can do
Text as Widget, you can just return a Future<String>Future<String> func() async {
var dog = await db.firstDog();
return dog.name;
}
Database db = new Database();
String _dogName;
@override
Widget build(BuildContext context) {
return Scaffold(
body: Center(
child: Text(_dogName),
),
);
}
void func() async {
setState(() async {
var dog = await db.firstDog();
_dogName = dog.name;
});
}
Check this article on medium. You can get a good understanding.
For asynchronous functions you should use Future class for returning the values.
Future<String> asyncFunc() async {
d = await db.firstDog();
return d.name;
}
Then use this string to set the text for a TextView
