AutoCompleteTextField controller not working in flutter - flutter

Question

I am facing a problem, I have a autocompletetextfield its work fine but contoller not working when i settext throw controller nothing happen, others work fine (quantity and price controllers)...
Examples:
On search itemSubmit
here is my TextField
AutoCompleteTextField<Services>(
controller: _serviceController,
itemSorter: (Services a, Services b) {
return a.name.compareTo(b.name);
},
decoration: InputDecoration(
fillColor: Colors.white,
labelText: "Service",
filled: true,
),
style: TextStyle(
fontFamily: "Light",
),
suggestions: Services.list,
itemFilter: (Services suggestion, String query) {
return suggestion.name.toLowerCase().startsWith(query.toLowerCase());
},
itemBuilder: (BuildContext context, Services suggestion) {
return Padding(
padding: const EdgeInsets.all(8.0),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
Text(suggestion.name,
style: TextStyle(
fontSize: 16.0
),
),
],
),
);
},
key: null,
itemSubmitted: (Services data) {
setState(() {
**_serviceController.text = data.name;**
_priceController.text = data.price;
_quantityController.text = data.quantity.toString();
});
},
),

Answer 1

You should give Key, just assign a GlobalKey to AutoCompleteTextField Widget
GlobalKey key = new GlobalKey<AutoCompleteTextFieldState<Services>>();
AutoCompleteTextField<Services>(
controller: _serviceController,
itemSorter: (Services a, Services b) {
return a.name.compareTo(b.name);
},
decoration: InputDecoration(
fillColor: Colors.white,
labelText: "Service",
filled: true,
),
style: TextStyle(
fontFamily: "Light",
),
suggestions: Services.list,
itemFilter: (Services suggestion, String query) {
return suggestion.name.toLowerCase().startsWith(query.toLowerCase());
},
itemBuilder: (BuildContext context, Services suggestion) {
return Padding(
padding: const EdgeInsets.all(8.0),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
Text(suggestion.name,
style: TextStyle(
fontSize: 16.0
),
),
],
),
);
},
key: key,
itemSubmitted: (Services data) {
setState(() {
_serviceController.text = data.name;
_priceController.text = data.price;
_quantityController.text = data.quantity.toString();
});
},
),