can't type into textfield after requesting focus-CodePudding

when I input something from the textfield it should clear the text in the textfield and request focus and continue typing, the first two works but I can't type in the textfield once I request focus.
help?

FocusNode node = FocusNode();
TextField(
    focusNode: node,
    controller: controller,
    textAlign: TextAlign.center,
    onSubmitted: (value) {
        setState(() {
            if(value == (n1 * n2).toString()){
                score  = 10;
                n1 = Random().nextInt(13)   0;
                n2 = Random().nextInt(13)   0;
                print(true);
            }
            else {
                lives -= 1;
                print(false);
            }

         });
         controller.clear();
         sleep(Duration(milliseconds: 10));
         node.requestFocus();
     },
     autofocus: true,
     decoration: InputDecoration(
         border: InputBorder.none
     ),
     style: TextStyle(
     color: Colors.white,
     fontSize: 48
     ),
),

CodePudding user response：

Future.delayed(const Duration(milliseconds: 10), () {
  node.requestFocus();
});

Try this.

CodePudding user response：

Insure that your node initialization is not inside the build, also, your sleep method is not working like that, you should either do the following

void sleep(final Duration duration, {final VoidCallback? onDone}) {
    Future.delayed(duration, onDone);
}
//and use it like this,
sleep(Duration(milliseconds: 10), onDone: node.requestFocus);

Future sleep(final Duration duration) async {
    await Future.delayed(duration);
}
//and use it like this
await sleep(Duration(milliseconds: 10));
node.requestFocus();

OR the known way, same as @aoiTenshi mentioned