Text in the TextField disappears when keyboard is removed - flutter

Question

Text entered in my TextField widget disappears when I remove the keyboard from the view.
There are two TextField's, title and description. The above problem only occurs for the title but not with the description.
Here's the relevant excerpt from the build method:
#override
Widget build(BuildContext context) {
_note = widget._note; // This is coming from StatefulWidget Class above
TextStyle textStyle = Theme.of(context).textTheme.title;
_titleController.text = _note.title;
_descriptionController.text = _note.description;
return Scaffold(
body: ListView(
children: <Widget>[
Padding(
padding: EdgeInsets.all(15.0),
child: TextField(
style: textStyle,
controller: _titleController,
decoration: InputDecoration(
labelText: "Title",
labelStyle: textStyle,
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(5.0))),
),
),
Padding(
padding: EdgeInsets.all(15.0),
child: TextField(
style: textStyle,
controller: _descriptionController,
decoration: InputDecoration(
labelText: "Description",
labelStyle: textStyle,
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(5.0))),
),
),
...
}
}
Screenshots of Keyboard shown & removed.

Answer 1

This occurs because you are setting the text in your build method. This build method can get invoked at any time, e.g. when the keyboard is contracted because the UI needs to react to that.
This means that you should move this code to initState:
#override
void initState() {
_note = widget._note;
_titleController.text = _note.title;
_descriptionController.text = _note.description;
super.initState();
}
initState is only called once when the your widget is inserted into the build tree.
I am not sure why this only happens with one of the TextFields's. I assume that you are using the TextController's somewhere else to set the Note's content, which could cause this behavior.
Furthermore, you should probably avoid using a leading underscore _ for _note in your StatefulWidget (widget._note) as you access it from your State.