I'm new to coding of any sort and now trying to add in ToggleButtons (I think this is the best option for what I need) so that user can select one of 3 options, but struggling to know how to integrate ToggleButtons into my current code? I have a screen shot of my current app screen and how I would like it to look with ToggleButtons. Please can anyone help? Thank you
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
void main() => runApp(const MyApp());
class MyApp extends StatelessWidget {
const MyApp({super.key});
@override
Widget build(BuildContext context) {
const appTitle = 'Help with diabetic dosage for a meal!';
return MaterialApp(
debugShowCheckedModeBanner: false,
title: appTitle,
home: Scaffold(
appBar: AppBar(
title: const Text(appTitle),
backgroundColor: Colors.grey,
foregroundColor: Colors.black,
),
body: const AddTwoNumbers(),
),
);
}
}
class AddTwoNumbers extends StatefulWidget {
const AddTwoNumbers({super.key});
@override
// ignore: library_private_types_in_public_api
_AddTwoNumbersState createState() => _AddTwoNumbersState();
}
class _AddTwoNumbersState extends State<AddTwoNumbers> {
Color _fillColor = Colors.white;
TextEditingController numR1C1controller =
TextEditingController(); //Changed name of the texteditingcontroller as Row as R and Column as C
TextEditingController numR1C2controller = TextEditingController();
TextEditingController numR1C3controller = TextEditingController();
TextEditingController numR2C1controller = TextEditingController();
TextEditingController numR2C2controller = TextEditingController();
TextEditingController numR2C3controller = TextEditingController();
TextEditingController numR3C1controller = TextEditingController();
TextEditingController numR3C2controller = TextEditingController();
TextEditingController numR3C3controller = TextEditingController();
String result = "0";
String result2 = "0";
String result3 = "0";
_calculateR1() {
if (numR1C1controller.text.isNotEmpty &&
numR1C2controller.text.isNotEmpty) {
double sum = double.parse(numR1C1controller.text) -
double.parse(numR1C2controller.text);
numR1C3controller.text = sum.toStringAsFixed(1);
result = sum.toStringAsFixed(1);
}
if (numR1C2controller.text.isNotEmpty) {
setState(() {
_fillColor = double.parse(numR1C2controller.text) < 5
? Colors.red
: double.parse(numR1C2controller.text) > 9.1
? Colors.orange
: Colors.green;
});
} else {
setState(() {
_fillColor = Colors.white;
});
}
}
_calculateR2() {
if (numR2C1controller.text.isNotEmpty &&
numR2C2controller.text.isNotEmpty) {
setState(() {
double sum = double.parse(numR2C1controller.text) /
double.parse(numR2C2controller.text);
numR2C3controller.text = sum.toStringAsFixed(1);
result2 = sum.toStringAsFixed(1);
});
}
}
_calculateR3() {
if (numR3C1controller.text.isNotEmpty &&
numR3C2controller.text.isNotEmpty) {
setState(() {
double sum = double.parse(numR3C1controller.text) *
double.parse(numR3C2controller.text);
numR3C3controller.text = sum.toStringAsFixed(1);
result3 = sum.toStringAsFixed(1);
});
}
}
@override
Widget build(BuildContext context) {
return SafeArea(
child: Scaffold(
body: Container(
padding: const EdgeInsets.all(10.0),
child: Column(
children: [
const Padding(
padding: EdgeInsets.all(6.0),
child: Text('Meal Ratio'),
),
Row(
children: <Widget>[
Expanded(
child: TextField(
textAlign: TextAlign.center,
style: const TextStyle(fontSize: 20.0),
controller: numR1C1controller,
onChanged: (value) => _calculateR1(),
keyboardType:
const TextInputType.numberWithOptions(decimal: true),
inputFormatters: <TextInputFormatter>[
FilteringTextInputFormatter.allow(
RegExp(r'^(\d )?\.?\d{0,1}'))
],
decoration: InputDecoration(
border: const OutlineInputBorder(),
labelText: 'Target Level',
hintText: 'Enter First Number',
fillColor: _fillColor,
filled: false),
),
),
const SizedBox(
width: 8,
),
Expanded(
child: TextField(
textAlign: TextAlign.center,
style: const TextStyle(fontSize: 20.0),
onChanged: (value) => _calculateR1(),
keyboardType:
const TextInputType.numberWithOptions(decimal: true),
controller: numR1C2controller,
inputFormatters: <TextInputFormatter>[
FilteringTextInputFormatter.allow(
RegExp(r'^(\d )?\.?\d{0,1}'))
],
decoration: InputDecoration(
border: const OutlineInputBorder(),
filled: true,
labelText: 'Current Level',
hintText: 'Enter Second Number',
fillColor: _fillColor),
),
),
const SizedBox(
width: 8,
),
Expanded(
child: TextField(
textAlign: TextAlign.center,
style: const TextStyle(fontSize: 20.0),
onChanged: (value) => _calculateR1(),
keyboardType:
const TextInputType.numberWithOptions(decimal: true),
controller: numR1C3controller,
inputFormatters: <TextInputFormatter>[
FilteringTextInputFormatter.digitsOnly
],
decoration: const InputDecoration(
border: OutlineInputBorder(),
labelText: 'Result',
hintText: '',
),
),
),
const SizedBox(
width: 8,
),
],
),
const SizedBox(
height: 8,
),
const Padding(
padding: EdgeInsets.all(6.0),
child: Text('Calculations'),
),
Row(
children: [
Expanded(
child: TextField(
onChanged: (value) => _calculateR2(),
keyboardType:
const TextInputType.numberWithOptions(decimal: true),
controller: numR2C1controller,
inputFormatters: <TextInputFormatter>[
FilteringTextInputFormatter.allow(
RegExp(r'^(\d )?\.?\d{0,2}'))
],
decoration: const InputDecoration(
border: OutlineInputBorder(),
labelText: 'One Unit',
hintText: 'Enter Third Number',
),
),
),
const SizedBox(
width: 8,
),
Expanded(
child: TextField(
onChanged: (value) => _calculateR2(),
keyboardType:
const TextInputType.numberWithOptions(decimal: true),
controller: numR2C2controller,
inputFormatters: <TextInputFormatter>[
FilteringTextInputFormatter.allow(
RegExp(r'^(\d )?\.?\d{0,2}'))
],
decoration: const InputDecoration(
border: OutlineInputBorder(),
labelText: 'Drop by',
hintText: 'Enter Fourth Number',
),
),
),
const SizedBox(
width: 8,
),
Expanded(
child: TextField(
textAlign: TextAlign.center,
style: const TextStyle(fontSize: 20.0),
onChanged: (value) => _calculateR3(),
keyboardType:
const TextInputType.numberWithOptions(decimal: true),
controller: numR2C3controller,
inputFormatters: <TextInputFormatter>[
FilteringTextInputFormatter.digitsOnly
],
decoration: const InputDecoration(
border: OutlineInputBorder(),
labelText: 'Result',
hintText: '',
),
),
),
const SizedBox(
width: 8,
),
],
),
const SizedBox(
height: 8,
),
Row(
children: [
Expanded(
child: TextField(
onChanged: (value) => _calculateR3(),
keyboardType:
const TextInputType.numberWithOptions(decimal: true),
controller: numR3C1controller,
inputFormatters: <TextInputFormatter>[
FilteringTextInputFormatter.allow(
RegExp(r'^(\d )?\.?\d{0,2}'))
],
decoration: const InputDecoration(
border: OutlineInputBorder(),
labelText: 'Meal Carbs',
hintText: 'Enter Fifth Number',
),
),
),
const SizedBox(
width: 8,
),
Expanded(
child: TextField(
onChanged: (value) => _calculateR3(),
keyboardType:
const TextInputType.numberWithOptions(decimal: true),
controller: numR3C2controller,
inputFormatters: <TextInputFormatter>[
FilteringTextInputFormatter.allow(
RegExp(r'^(\d )?\.?\d{0,2}'))
],
decoration: const InputDecoration(
border: OutlineInputBorder(),
labelText: 'Meal Ratio',
hintText: 'Enter Sixth Number',
),
),
),
const SizedBox(
width: 8,
),
Expanded(
child: TextField(
textAlign: TextAlign.center,
style: const TextStyle(fontSize: 20.0),
onChanged: (value) => _calculateR3(),
keyboardType:
const TextInputType.numberWithOptions(decimal: true),
controller: numR3C3controller,
inputFormatters: <TextInputFormatter>[
FilteringTextInputFormatter.digitsOnly
],
decoration: const InputDecoration(
border: OutlineInputBorder(),
labelText: 'Result',
hintText: '',
),
),
),
const SizedBox(
width: 8,
),
],
),
],
),
),
),
);
}
}
CodePudding user response：
What you can do is to make a list of Maps that keeps track of your buttons,
// MAKE LIST OF MAP TO KEEP TRACK OF EACH BUTTONS
List<Map> buttons = [{"name":"BreakFast","active":false},
{"name":"Lunch","active":false},
{"name":"Tea","active":false},];
then make a function that handle which button to select and toggle
// TOGGLE BUTTON FUNCTION
toggleButtons(String name){
for(var i in buttons){
if(i['name'] == name){
i['active'] = !i['active'];
}else{
i['active'] = false;
}
}
setState((){});
}
here is the full code:
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
void main() => runApp(const MyApp());
class MyApp extends StatelessWidget {
const MyApp({super.key});
@override
Widget build(BuildContext context) {
const appTitle = 'Help with diabetic dosage for a meal!';
return MaterialApp(
debugShowCheckedModeBanner: false,
title: appTitle,
home: Scaffold(
appBar: AppBar(
title: const Text(appTitle),
backgroundColor: Colors.grey,
foregroundColor: Colors.black,
),
body: const AddTwoNumbers(),
),
);
}
}
class AddTwoNumbers extends StatefulWidget {
const AddTwoNumbers({super.key});
@override
// ignore: library_private_types_in_public_api
_AddTwoNumbersState createState() => _AddTwoNumbersState();
}
class _AddTwoNumbersState extends State<AddTwoNumbers> {
Color _fillColor = Colors.white;
TextEditingController numR1C1controller =
TextEditingController(); //Changed name of the texteditingcontroller as Row as R and Column as C
TextEditingController numR1C2controller = TextEditingController();
TextEditingController numR1C3controller = TextEditingController();
TextEditingController numR2C1controller = TextEditingController();
TextEditingController numR2C2controller = TextEditingController();
TextEditingController numR2C3controller = TextEditingController();
TextEditingController numR3C1controller = TextEditingController();
TextEditingController numR3C2controller = TextEditingController();
TextEditingController numR3C3controller = TextEditingController();
String result = "0";
String result2 = "0";
String result3 = "0";
// MAKE LIST OF MAP TO KEEP TRACK OF EACH BUTTONS
List<Map> buttons = [{"name":"BreakFast","active":false},
{"name":"Lunch","active":false},
{"name":"Tea","active":false},];
// YOU CAN SET VARIABLE TO CURRENT MEAL NAME AND CAN CHECK WHETHER IT'S (breakFast) OR NOT
String? currentMealType;
// TOGGLE BUTTON FUNCTION
toggleButtons(String name){
for(var i in buttons){
if(i['name'] == name){
i['active'] = !i['active'];
}else{
i['active'] = false;
}
}
setState((){});
}
_calculateR1() {
if (numR1C1controller.text.isNotEmpty &&
numR1C2controller.text.isNotEmpty) {
double sum = double.parse(numR1C1controller.text) -
double.parse(numR1C2controller.text);
numR1C3controller.text = sum.toStringAsFixed(1);
result = sum.toStringAsFixed(1);
}
if (numR1C2controller.text.isNotEmpty) {
setState(() {
_fillColor = double.parse(numR1C2controller.text) < 5
? Colors.red
: double.parse(numR1C2controller.text) > 9.1
? Colors.orange
: Colors.green;
});
} else {
setState(() {
_fillColor = Colors.white;
});
}
}
_calculateR2() {
if (numR2C1controller.text.isNotEmpty &&
numR2C2controller.text.isNotEmpty) {
setState(() {
double sum = double.parse(numR2C1controller.text) /
double.parse(numR2C2controller.text);
numR2C3controller.text = sum.toStringAsFixed(1);
result2 = sum.toStringAsFixed(1);
});
}
}
_calculateR3() {
if (numR3C1controller.text.isNotEmpty &&
numR3C2controller.text.isNotEmpty) {
setState(() {
double sum = double.parse(numR3C1controller.text) *
double.parse(numR3C2controller.text);
numR3C3controller.text = sum.toStringAsFixed(1);
result3 = sum.toStringAsFixed(1);
});
}
}
@override
Widget build(BuildContext context) {
return SafeArea(
child: Scaffold(
body: Container(
padding: const EdgeInsets.all(10.0),
child: Column(
children: [
const Padding(
padding: EdgeInsets.all(6.0),
child: Text('Meal Ratio'),
),
// HERER IS THE VIEW FOR BUTTONS
//******************************
Row(children: buttons.map((btn)=>
Expanded(child:
GestureDetector(
onTap:(){
toggleButtons(btn['name']);
},
child:
Container(
padding:const EdgeInsets.all(20.0),
margin:const EdgeInsets.only(bottom:10, right: 10),
decoration:BoxDecoration(
color:btn['active'] ? Colors.red: Colors.white,
border: Border.all(color:Colors.grey[300]!)
),
child:Text(btn['name'], style:TextStyle(color: btn['active'] ? Colors.white: Colors.black)),
),),)
).toList(),),
//******************************
Row(
children: <Widget>[
Expanded(
child: TextField(
textAlign: TextAlign.center,
style: const TextStyle(fontSize: 20.0),
controller: numR1C1controller,
onChanged: (value) => _calculateR1(),
keyboardType:
const TextInputType.numberWithOptions(decimal: true),
inputFormatters: <TextInputFormatter>[
FilteringTextInputFormatter.allow(
RegExp(r'^(\d )?\.?\d{0,1}'))
],
decoration: InputDecoration(
border: const OutlineInputBorder(),
labelText: 'Target Level',
hintText: 'Enter First Number',
fillColor: _fillColor,
filled: false),
),
),
const SizedBox(
width: 8,
),
Expanded(
child: TextField(
textAlign: TextAlign.center,
style: const TextStyle(fontSize: 20.0),
onChanged: (value) => _calculateR1(),
keyboardType:
const TextInputType.numberWithOptions(decimal: true),
controller: numR1C2controller,
inputFormatters: <TextInputFormatter>[
FilteringTextInputFormatter.allow(
RegExp(r'^(\d )?\.?\d{0,1}'))
],
decoration: InputDecoration(
border: const OutlineInputBorder(),
filled: true,
labelText: 'Current Level',
hintText: 'Enter Second Number',
fillColor: _fillColor),
),
),
const SizedBox(
width: 8,
),
Expanded(
child: TextField(
textAlign: TextAlign.center,
style: const TextStyle(fontSize: 20.0),
onChanged: (value) => _calculateR1(),
keyboardType:
const TextInputType.numberWithOptions(decimal: true),
controller: numR1C3controller,
inputFormatters: <TextInputFormatter>[
FilteringTextInputFormatter.digitsOnly
],
decoration: const InputDecoration(
border: OutlineInputBorder(),
labelText: 'Result',
hintText: '',
),
),
),
const SizedBox(
width: 8,
),
],
),
const SizedBox(
height: 8,
),
const Padding(
padding: EdgeInsets.all(6.0),
child: Text('Calculations'),
),
Row(
children: [
Expanded(
child: TextField(
onChanged: (value) => _calculateR2(),
keyboardType:
const TextInputType.numberWithOptions(decimal: true),
controller: numR2C1controller,
inputFormatters: <TextInputFormatter>[
FilteringTextInputFormatter.allow(
RegExp(r'^(\d )?\.?\d{0,2}'))
],
decoration: const InputDecoration(
border: OutlineInputBorder(),
labelText: 'One Unit',
hintText: 'Enter Third Number',
),
),
),
const SizedBox(
width: 8,
),
Expanded(
child: TextField(
onChanged: (value) => _calculateR2(),
keyboardType:
const TextInputType.numberWithOptions(decimal: true),
controller: numR2C2controller,
inputFormatters: <TextInputFormatter>[
FilteringTextInputFormatter.allow(
RegExp(r'^(\d )?\.?\d{0,2}'))
],
decoration: const InputDecoration(
border: OutlineInputBorder(),
labelText: 'Drop by',
hintText: 'Enter Fourth Number',
),
),
),
const SizedBox(
width: 8,
),
Expanded(
child: TextField(
textAlign: TextAlign.center,
style: const TextStyle(fontSize: 20.0),
onChanged: (value) => _calculateR3(),
keyboardType:
const TextInputType.numberWithOptions(decimal: true),
controller: numR2C3controller,
inputFormatters: <TextInputFormatter>[
FilteringTextInputFormatter.digitsOnly
],
decoration: const InputDecoration(
border: OutlineInputBorder(),
labelText: 'Result',
hintText: '',
),
),
),
const SizedBox(
width: 8,
),
],
),
const SizedBox(
height: 8,
),
Row(
children: [
Expanded(
child: TextField(
onChanged: (value) => _calculateR3(),
keyboardType:
const TextInputType.numberWithOptions(decimal: true),
controller: numR3C1controller,
inputFormatters: <TextInputFormatter>[
FilteringTextInputFormatter.allow(
RegExp(r'^(\d )?\.?\d{0,2}'))
],
decoration: const InputDecoration(
border: OutlineInputBorder(),
labelText: 'Meal Carbs',
hintText: 'Enter Fifth Number',
),
),
),
const SizedBox(
width: 8,
),
Expanded(
child: TextField(
onChanged: (value) => _calculateR3(),
keyboardType:
const TextInputType.numberWithOptions(decimal: true),
controller: numR3C2controller,
inputFormatters: <TextInputFormatter>[
FilteringTextInputFormatter.allow(
RegExp(r'^(\d )?\.?\d{0,2}'))
],
decoration: const InputDecoration(
border: OutlineInputBorder(),
labelText: 'Meal Ratio',
hintText: 'Enter Sixth Number',
),
),
),
const SizedBox(
width: 8,
),
Expanded(
child: TextField(
textAlign: TextAlign.center,
style: const TextStyle(fontSize: 20.0),
onChanged: (value) => _calculateR3(),
keyboardType:
const TextInputType.numberWithOptions(decimal: true),
controller: numR3C3controller,
inputFormatters: <TextInputFormatter>[
FilteringTextInputFormatter.digitsOnly
],
decoration: const InputDecoration(
border: OutlineInputBorder(),
labelText: 'Result',
hintText: '',
),
),
),
const SizedBox(
width: 8,
),
],
),
],
),
),
),
);
}
}