Insert value textfield to format Map in flutter when get loop - flutter

Question

how to insert value textfield controller in looping condition, I want to create new textfield when the button 'Tambah' have presse, but there is problem when I check criemHistories value, this is my code
class _TestingState extends State<Testing> {
int textFieldCount = 1;
List<Map<String, String>> crimeHistories = [];
List<Widget> buildTextFields() {
List<Widget> textFields = [];
for (int i = 0; i < textFieldCount; i++) {
TextEditingController pengadilanC = TextEditingController();
TextEditingController polresC = TextEditingController();
Map<String, String> crimeHistory = {
"court": pengadilanC.text,
"police_department": polresC.text,
};
crimeHistories.add(crimeHistory);
textFields.add(Column(
children: [
Container(
margin: EdgeInsets.only(top: 20),
child: Column(
children: [
Row(
children: [
Expanded(
flex: 3,
child: RichText(
text: TextSpan(
style: TextStyle(
fontWeight: FontWeight.bold,
fontSize: 15,
),
text: 'Pengadilan Negeri',
),
),
),
Expanded(
flex: 7,
child: Align(
alignment: Alignment.center,
child: TextField(
controller: pengadilanC,
onChanged: (value) {
crimeHistory["court"] = value;
},
),
),
),
],
),
],
),
),
Container(
margin: EdgeInsets.only(top: 20),
child: Column(
children: [
Row(
children: [
Expanded(
flex: 3,
child: RichText(
text: TextSpan(
style: TextStyle(
fontWeight: FontWeight.bold,
fontSize: 15,
),
text: 'Polres/Polsek',
),
),
),
Expanded(
flex: 7,
child: Align(
alignment: Alignment.center,
child: TextField(
controller: polresC,
onChanged: (value) {
crimeHistory["police_department"] = value;
},
),
),
),
],
),
],
),
),
],
));
// Masukkan Map ke dalam list crimeHistories
}
return textFields;
}
#override
Widget build(BuildContext context) {
return Scaffold(
body: Column(
children: [
Column(children: buildTextFields()),
ElevatedButton(
child: Text('Tambah'),
onPressed: () {
textFieldCount++;
},
),
ElevatedButton(
child: Text('Remove'),
onPressed: () {
setState(() {
textFieldCount--;
});
},
),
ElevatedButton(
child: Text("Simpan"),
onPressed: () {
print(crimeHistories);
},
),
],
),
);
}
}
this code can run and add form textfield properly, but when I check crimeHistories value, there is 3 data list, how come it's can be happend? and how to solve it?