尝试从另一个小部件打印 Textfield 的文本并始终在 flutter 中打印空（仅 I/flutter ( 9049): ）

Question

TextEditingController _name = TextEditingController();

Future<String> randomFun() async{
  return _name.text;
}

and in another class:

print(await(theFirstClass.randomFun()));

and it's just always print I/flutter ( 9049):

I have written in the Textfield it's must be has text value.

I printed it in the same class and work this problem when print from another class it's cant see the value of _name i don't know why.

for more explain: i neet to print the text of TextField by button in another widget

it's can work if i added static for _name like this static TextEditingController _name = TextEditingController();

but i need way without static

my code is like this:

2 stateful widgets in one page the first widget FirstClass the second widget SecondClass FirstClass

class FirstClassextends State<First> {
...
  TextEditingController_name = TextEditingController();

  Future<String> randomFun() async{
    return _name.text;
  }
...
  TextField(
  decoration: InputDecoration(labelText: 'Enter your name'),
  controller: _name,
  ),
...
}

secondClass

class secondClassextends State<second> {
...
  FirstClass firstClass = FirstClass();
...
  IconButton(
    icon: Icon(Icons.person, color: Colors.white,),
    onPressed: ()async{
      print(await(firstClass.randomFun()));
    }
  ),

And again i need to print/get the text of TextField by pressing a button in another widget.

Answer 1

Change this

Future<String> randomFun() async{
    return _name.text;
  }

to

Future<String> randomFun() async {
    return Future.value(_name.text);
  }