Flutter app freezes when a TextField or TextFormField is selected - flutter

Question

I have a Flutter app that is functioning properly in all respects except when I select a TextField (or TextFormField). When I select the TextField, the cursor blinks in the TextField, but I can't type anything AND all other buttons like the floatingActionButton and the back button in the AppBar quit working. Essentially, the app appears to be frozen, but I don't get any error messages.
After numerous attempts to fix the problem in two different pages that contain FocusNodes and TextEditingControllers, I went back to square one by incorporating a new page with code straight from Flutter's website, but the TextField in this barebones code still locks up the app.
import 'package:flutter/material.dart';
class EventDetailForm extends StatefulWidget {
static const String routeName = "/events/event-detail-form";
#override
_EventDetailFormState createState() => _EventDetailFormState();
}
class _EventDetailFormState extends State<EventDetailForm> {
final myController = TextEditingController();
#override
void dispose() {
myController.dispose();
super.dispose();
}
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(title: Text('Event Detail')),
body: Padding(
padding: const EdgeInsets.all(16),
child: TextField(
controller: myController,
)),
floatingActionButton: FloatingActionButton(
onPressed: () {
return showDialog(
context: context,
builder: (context) {
return AlertDialog(
content: Text(myController.text),
);
});
},
child: Icon(Icons.text_fields),
),
);
}
}
Unfortunately, I am not getting any error messages. The cursor just blinks in the TextField and everything else loses function and I have to quit and restart. I am not sure what else I should be considering. Does anyone have any ideas on what might be causing this?

Answer 1

Simulator -> Device -> Erase All Content And Settings works for me.

Answer 2

Had same problem when I upgraded Xcode to ios 13.1. I switched to a different simulator, and the problem went away.

Answer 3

This maybe late, but it happened to me too just today. I also changed the channel to beta but unfortunately did not work too. Apparently what worked for me is when I restarted the simulator after I put back the channel to stable.

Answer 4

I had the same bug, solved by switching to the beta channel of Flutter.
In your terminal use
flutter channel beta
flutter upgrade
About channels you can read here https://github.com/flutter/flutter/wiki/Flutter-build-release-channels

Answer 5

I did not change channel, a simple flutter upgrade was enough to fix this problem. I also closed Android Studio and all simulators and when I restarted, the problem was gone.

Answer 6

I think I am late to the party but the issue still exists in 2021.
I tried all the solutions but couldn't fix it. Whatever I was typing in TextField or TextFormField or autocomplete_textfield, the characters were not visible.
I fixed it by opening the Widget as a showGeneralDialog() instead of using Navigator.of(...). Here is the sample code.
await showGeneralDialog(
barrierColor: AppStyle.primaryColor.withOpacity(0.3),
transitionBuilder: (context, a1, a2, widget) {
return Transform.scale(
scale: a1.value,
child: Opacity(opacity: a1.value, child: WidgetScreenToOpen()),
);
},
transitionDuration: Duration(milliseconds: 500),
barrierDismissible: true,
barrierLabel: 'Label',
context: context,
pageBuilder: (context, animation1, animation2) {
return Container();
}).then((result) {
return result;
});