# flutter-examples
**Repository Path**: xiaolinlu/flutter-examples
## Basic Information
- **Project Name**: flutter-examples
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: Unlicense
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No
## Statistics
- **Stars**: 0
- **Forks**: 0
- **Created**: 2024-06-08
- **Last Updated**: 2024-06-08
## Categories & Tags
**Categories**: Uncategorized
**Tags**: None
## README
[](https://android-arsenal.com/details/3/7486)[](https://twitter.com/takeoffandroid)[](https://twitter.com/takeoffandroid)
- [Layouts](#layouts)
- [Container](#container)
- [Row](#row)
- [MainAxisAlignment](#mainaxisalignment)
- [CrossAxisAlignment](#crossaxisalignment)
- [Column](#column)
- [MainAxisAlignment](#mainaxisalignment)
- [CrossAxisAlignment](#crossaxisalignment)
- [Center](#center)
- [Align](#align)
- [Padding](#padding)
- [SizedBox](#sizedbox)
- [Expanded](#expanded)
- [Flexible](#flexible)
- [ConstrainedBox](#constrainedbox)
- [Stack](#stack)
- [Wrap](#wrap)
- [Positioned](#positioned)
- [ListView](#listview)
- [Simple](#simple)
- [Divider](#divider)
- [Card](#card)
- [Text](#text)
- [Icon](#icon)
- [Material](#material)
- [Button](#button)
- [Material Button](#material-button)
- [Flat Button](#flat-button)
- [Raised Button](#raised-button)
- [Icon Button](#icon-button)
- [Floating Action Button](#floating-action-button)
- [DropdownButton](#dropdownbutton)
- [Radio Button](#radio-button)
- [Vertical](#vertical)
- [Horizontal](#horizontal)
- [Input Field](#input-field)
- [TextField](#textfield)
- [Under Line Style ](#under-line-style )
- [Outer Line Style ](#outer-line-style )
- [TextFormField](#textformfield)
- [Navigation Drawer](#navigation-drawer)
- [Sliver List](#sliver-list)
- [Utilities](#utilities)
# Layouts
## Container
```dart
Container(
padding: const EdgeInsets.all(0.0),
color: Colors.cyanAccent,
width: 80.0,
height: 80.0,
),
```
## Row
### MainAxisAlignment
> **Note:** The below example is with **CrossAxisAlignment.center**
|.center|.start|.end|
|:--:|:--:|:--:|
|
|
|
|
|.spaceEvenly|.spaceAround|.spaceBetween|
|:--:|:--:|:--:|
|
|
|
|
### CrossAxisAlignment
|.center|.start|.end|.stretch|
|:--:|:--:|:--:|:--:|
| |
|
|
|
```dart
Row(
mainAxisAlignment: MainAxisAlignment.center,
mainAxisSize: MainAxisSize.max,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
Container(
padding: const EdgeInsets.all(0.0),
color: Colors.cyanAccent,
width: 80.0,
height: 80.0,
),
Container(
padding: const EdgeInsets.all(0.0),
color: Colors.blueAccent,
width: 80.0,
height: 80.0,
),
Container(
padding: const EdgeInsets.all(0.0),
color: Colors.orangeAccent,
width: 80.0,
height: 80.0,
),
],
),
```
## Column
### MainAxisAlignment
> **Note:** The below example is with **CrossAxisAlignment.center**
|.center|.start|.end|.spaceEvenly|.spaceAround|.spaceBetween|
|:--:|:--:|:--:|:--:|:--:|:--:|
|
|
|
|
|
|
|
### CrossAxisAlignment
|.center|.start|.end|.stretch|
|:--:|:--:|:--:|:--:|
| |
|
|
|
```dart
Column(
mainAxisAlignment: MainAxisAlignment.center,
mainAxisSize: MainAxisSize.max,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
Container(
padding: const EdgeInsets.all(0.0),
color: Colors.cyanAccent,
width: 80.0,
height: 80.0,
),
Container(
padding: const EdgeInsets.all(0.0),
color: Colors.blueAccent,
width: 80.0,
height: 80.0,
),
Container(
padding: const EdgeInsets.all(0.0),
color: Colors.orangeAccent,
width: 80.0,
height: 80.0,
),
],
),
```
## Center
```dart
Center(child: Container(
padding: const EdgeInsets.all(0.0),
color: Colors.cyanAccent,
width: 80.0,
height: 80.0,
))
```
> **Note:** **Center** wraps any widget to center to its parent widget. (i.e orange is the parent widget)
## Align
|.topLeft|.topCenter|.topRight|
|:--:|:--:|:--:|
|
|
|
|
|.centerLeft|.center|.centerRight|
|:--:|:--:|:--:|
|
||
|
|.bottomLeft|.bottomCenter|.bottomRight|
|:--:|:--:|:--:|
|
|
|
|
```dart
Align(
alignment: Alignment.center,
child: Container(
padding: const EdgeInsets.all(0.0),
color: Colors.cyanAccent,
width: 80.0,
height: 80.0,
))
```
> **Note:** **Align** wraps any widget based on the Alignment direction to its parent widget. The default alignment for **Align** is center.
## Padding
```dart
Padding(
padding: EdgeInsets.fromLTRB(24, 32, 24, 32) ,
child: Container(
padding: const EdgeInsets.all(0.0),
color: Colors.cyanAccent,
width: 80.0,
height: 80.0,
))
```
## SizedBox
```dart
SizedBox(
width: 200.0,
height: 100.0,
child: Card(
color: Colors.indigoAccent,
child: Center(
child: Text('SizedBox',
style: TextStyle(color: Colors.white)
)
)
)
)
```
> **Note:** **SizedBox** constraints its child widget to match based on specific size of width and height.
## Expanded
| Row | Column |
|----------------|-------------------------------|
|
|
|
```dart
Row(
mainAxisAlignment: MainAxisAlignment.center,
mainAxisSize: MainAxisSize.max,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
Expanded(
child: Container(color: Colors.cyan, height: 80),
flex: 2,
),
Expanded(
child: Container(color: Colors.indigoAccent, height: 80),
flex: 3,
),
Expanded(
child: Container(color: Colors.orange, height: 80),
flex: 4,
),
],
),
```
## Flexible
| Row | Column |
|----------------|-------------------------------|
|
|
|
```dart
Row(
mainAxisAlignment: MainAxisAlignment.center,
mainAxisSize: MainAxisSize.max,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
Flexible(
child: Container(color: Colors.cyanAccent, height: 80, width: 80),
flex: 2,
),
Flexible(
child: Container(color: Colors.indigoAccent, height: 80, width: 80),
flex: 3,
),
Flexible(
child: Container(color: Colors.orange, height: 80, width: 80),
flex: 4,
),
],
),
```
> **Hint:**
1. To make **Flexible** behave similar to Expanded, then add `fit: FlexFit.tight`
2. By default fit type for **Flexible** is `fit: FlexFit.loose`.
## ConstrainedBox
| Expand | Expand with Height | Tight | Loose |
|----------------|----------------------------|---------------|----------------|
|
|
|
|
|
|`BoxConstraints.expand()`|`BoxConstraints.expand(height: 100)`|`BoxConstraints.tight(Size(125, 100))`|`BoxConstraints.loose(Size(125, 100))`|
```dart
ConstrainedBox(
constraints: BoxConstraints.expand(height: 100),
child: Container(
color: Colors.orange,
child: Padding(padding: EdgeInsets.all(16), child: Text('Box Constraint', style: TextStyle(color: Colors.white),)),
))
```
## Stack
|AlignmentDirectional.centerStart|AlignmentDirectional.center|AlignmentDirectional.centerEnd|
|--------------------------------|---------------------------|------------------------------|
|
|
|
|
|AlignmentDirectional.bottomStart|AlignmentDirectional.bottomCenter|AlignmentDirectional.bottomEnd|
|--------------------------------|---------------------------|------------------------------|
|
|
|
|
|AlignmentDirectional.topStart|AlignmentDirectional.topCenter|AlignmentDirectional.topEnd|
|-----------------------------|------------------------------|---------------------------|
|
|
|
|
```dart
Stack(
alignment: AlignmentDirectional.center,
children: [
Container(
height: 200.0,
width: 200.0,
color: Colors.red,
),
Container(
height: 150.0,
width: 150.0,
color: Colors.blue,
),
Container(
height: 100.0,
width: 100.0,
color: Colors.green,
),
Container(
height: 50.0,
width: 50.0,
color: Colors.yellow,
),
],
),
```
> **Credits:** Fore more detailed blog post for this. Please visit https://medium.com/flutter-community/flutter-for-android-developers-how-to-design-framelayout-in-flutter-93a19fc7e7a6
## Wrap
```dart
Wrap(
spacing: 4.0, // gap between lines
children: [
Chip(
avatar: CircleAvatar(backgroundColor: Colors.orange, child: Text('C', style: TextStyle(color: Colors.white))),
label: Text('Cupcake'),
backgroundColor: Colors.white,
),
Chip(
avatar: CircleAvatar(backgroundColor: Colors.cyanAccent, child: Text('D', style: TextStyle(color: Colors.black45))),
label: Text('Donut'),
backgroundColor: Colors.white,
),
Chip(
avatar: CircleAvatar(backgroundColor: Colors.indigoAccent, child: Text('E', style: TextStyle(color: Colors.white))),
label: Text('Eclair'),
backgroundColor: Colors.white,
),
Chip(
avatar: CircleAvatar(backgroundColor: Colors.yellowAccent, child: Text('F', style: TextStyle(color: Colors.black45))),
label: Text('Froyo'),
backgroundColor: Colors.white,
),
Chip(
avatar: CircleAvatar(backgroundColor: Colors.green, child: Text('G', style: TextStyle(color: Colors.white))),
label: Text('Gingerbread'),
backgroundColor: Colors.white,
),
Chip(
avatar: CircleAvatar(backgroundColor: Colors.redAccent, child: Text('H', style: TextStyle(color: Colors.white))),
label: Text('Honeycomb'),
backgroundColor: Colors.white,
),
Chip(
avatar: CircleAvatar(backgroundColor: Colors.greenAccent, child: Text('I', style: TextStyle(color: Colors.black45))),
label: Text('Ice cream Sandwich'),
backgroundColor: Colors.white,
),
Chip(
avatar: CircleAvatar(backgroundColor: Colors.deepOrangeAccent, child: Text('J', style: TextStyle(color: Colors.white))),
label: Text('Jelly Bean'),
backgroundColor: Colors.white,
),
Chip(
avatar: CircleAvatar(backgroundColor: Colors.indigo, child: Text('K', style: TextStyle(color: Colors.white))),
label: Text('Kit Kat'),
backgroundColor: Colors.white,
),
Chip(
avatar: CircleAvatar(backgroundColor: Colors.tealAccent, child: Text('L', style: TextStyle(color: Colors.black45))),
label: Text('Lollipop'),
backgroundColor: Colors.white,
),
Chip(
avatar: CircleAvatar(backgroundColor: Colors.amberAccent, child: Text('M', style: TextStyle(color: Colors.white))),
label: Text('Marshmallow'),
backgroundColor: Colors.white,
),
Chip(
avatar: CircleAvatar(backgroundColor: Colors.cyan, child: Text('N', style: TextStyle(color: Colors.white))),
label: Text('Nougat'),
backgroundColor: Colors.white,
),
Chip(
avatar: CircleAvatar(backgroundColor: Colors.red, child: Text('O', style: TextStyle(color: Colors.white))),
label: Text('Oreo'),
backgroundColor: Colors.white,
),
Chip(
avatar: CircleAvatar(backgroundColor: Colors.greenAccent, child: Text('P', style: TextStyle(color: Colors.black45))),
label: Text('Pie'),
backgroundColor: Colors.white,
),
],
)
```
## Positioned
```dart
ConstrainedBox(
constraints: BoxConstraints.tight(Size(double.infinity, 256)),
child: Stack(
alignment: AlignmentDirectional.center,
children: [
Positioned(
top: 0.0,
child: Icon(Icons.calendar_today,
size: 128.0, color: Colors.lightBlueAccent),
),
Positioned(
top: 4,
right: 110,
child: CircleAvatar(radius: 16, backgroundColor: Colors.red)),
],
),
)
```
## ListView
### Simple
```dart
@override
Widget build(BuildContext context) {
List names = ['Alpha', 'Beta', 'Cupcake', 'Donut', 'Eclair',
'Froyo', 'Ginger bread', 'Honey comb', 'Ice cream sandwich', 'Jelly bean',
'Kitkat', 'Lollipop', 'Marshmallow', 'Nougat', 'Oreo', 'Pie'
];
return MaterialApp(
debugShowCheckedModeBanner: false,
home: Scaffold(
appBar: AppBar(title: Text('ListView')),
body: Center(
child:
ListView.builder(
itemCount: names.length,
itemBuilder: (BuildContext context, int position) {
var name = names[position];
return ListTile(title: Text(name));
}),
)),
);
}
```
### Divider
```dart
ListView.separated(
itemBuilder: (BuildContext context, int position) {
var name = names[position];
return ListTile(title: Text(name));
},
separatorBuilder: (BuildContext context, int index) =>
Divider(),
itemCount: names.length),
```
### Card
```dart
ListView.builder(
itemCount: names.length,
itemBuilder: (BuildContext context, int position) {
var name = names[position];
return Card(margin: EdgeInsets.fromLTRB(8, 4, 8, 4),child: ListTile(title: Text(name)));
})
```
## Text
```dart
Text(
"Flutter is Awesome",
style: TextStyle(
fontSize: 18.0,
color: Colors.greenAccent,
fontWeight: FontWeight.w500,
fontFamily: "Roboto"),
),
```
## Icon
```dart
new Icon(Icons.flight_takeoff, color: Colors.blueAccent, size: 96.0),
```
# Material
## Button
### Material Button
```dart
MaterialButton(
onPressed: () {
debugPrint('I am a material button');
},
shape: const StadiumBorder(),
textColor: Colors.black,
color: Colors.blue[300],
splashColor: Colors.blue[900],
disabledColor: Colors.grey,
disabledTextColor: Colors.white,
child: Text('Material Button'),
),
```
### Flat Button
```dart
FlatButton(
onPressed: () {
debugPrint('I am Awesome');
},
textColor: Colors.white,
color: Colors.blueAccent,
disabledColor: Colors.grey,
disabledTextColor: Colors.white,
highlightColor: Colors.orangeAccent,
child: Text('Flat Button'),
),
```
### Raised Button
```dart
RaisedButton(
onPressed: () {
debugPrint('I am Awesome');
},
textColor: Colors.white,
color: Colors.blueAccent,
disabledColor: Colors.grey,
disabledTextColor: Colors.white,
highlightColor: Colors.orangeAccent,
elevation: 4.0,
child: Text('Raised Button'),
),
```
### Icon Button
```dart
IconButton(
onPressed: () {
debugPrint("Starred Me!");
},
color: Colors.orangeAccent,
icon: Icon(Icons.star),
disabledColor: Colors.grey,
highlightColor: Colors.black38,
),
```
### Floating Action Button
### (FAB)
| Normal | Mini |
|----------------|------------------------------|
|
|
|
| -------- |`mini: true`|
```dart
Scaffold(
floatingActionButton: new FloatingActionButton(
mini: true,
child: new Icon(Icons.add),
onPressed: () {},
),
);
```
### DropdownButton
| DropdownButton | DropdownMenuItem |
|------------------------|--------------------------|
|
|
|
```dart
import 'package:flutter/material.dart';
class CustomDropDownWidget extends StatefulWidget {
@override
ChangeBGColorDropdownState createState() {
return new ChangeBGColorDropdownState();
}
}
class ChangeBGColorDropdownState extends State {
List _dropDownItemModelList = [
DropDownItemModel(versionName: "Cupcake"),
DropDownItemModel(versionName: "Donut"),
DropDownItemModel(versionName: "Eclair"),
DropDownItemModel(versionName: "Froyo"),
];
DropDownItemModel _dropDownItemModel;
@override
void initState() {
super.initState();
_dropDownItemModel = _dropDownItemModelList[0];
}
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
body: Center(
child: Container(
padding: EdgeInsets.fromLTRB(16, 0, 16, 0),
color: Colors.orangeAccent,
child: DropdownButton(
underline: Container(
decoration: const BoxDecoration(
border: Border(bottom: BorderSide(color: Colors.transparent))
),
),
iconEnabledColor: Colors.white,
items: _dropDownItemModelList
.map((dropDownItemModel) =>
DropdownMenuItem(
child: Text(dropDownItemModel.versionName),
value: dropDownItemModel,
))
.toList(),
onChanged: (DropDownItemModel dropDownItemModel) {
setState(() => _dropDownItemModel = dropDownItemModel);
},
hint: Text(
_dropDownItemModel.versionName,
style: TextStyle(color: Colors.white),
),
),
),
),
),
);
}
}
class DropDownItemModel {
String versionName;
DropDownItemModel({this.versionName});
}
```
### Radio Button
#### Vertical
```dart
import 'package:flutter/material.dart';
enum Gender { MALE, FEMALE, OTHER }
class RadioButton extends StatefulWidget {
@override
_RadioButtonState createState() => _RadioButtonState();
}
class _RadioButtonState extends State {
Gender _genderValue = Gender.MALE;
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
body: Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
RadioListTile(
title: const Text('Male'),
value: Gender.MALE,
groupValue: _genderValue,
onChanged: (Gender value) {
setState(() {
_genderValue = value;
});
},
),
RadioListTile(
title: const Text('Female'),
value: Gender.FEMALE,
groupValue: _genderValue,
onChanged: (Gender value) {
setState(() {
_genderValue = value;
});
},
),
RadioListTile(
title: const Text('Other'),
value: Gender.OTHER,
groupValue: _genderValue,
onChanged: (Gender value) {
setState(() {
_genderValue = value;
});
},
),
],
),
),
);
}
}
```
#### Horizontal
```dart
import 'package:flutter/material.dart';
enum Gender { MALE, FEMALE, OTHER }
class RadioButtonHorizontal extends StatefulWidget {
@override
_RadioButtonHorizontalState createState() => _RadioButtonHorizontalState();
}
class _RadioButtonHorizontalState extends State {
Gender _genderValue = Gender.MALE;
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
body: Center(
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
FlatButton.icon(
label: const Text('Male'),
icon: Radio(
value: Gender.MALE,
groupValue: _genderValue,
onChanged: (Gender value) {
setState(() {
_genderValue = value;
});
},
),
onPressed: () {
setState(() {
_genderValue = Gender.MALE;
});
},
),
FlatButton.icon(
label: const Text('Female'),
icon: Radio(
value: Gender.FEMALE,
groupValue: _genderValue,
onChanged: (Gender value) {
setState(() {
_genderValue = value;
});
},
),
onPressed: () {
setState(() {
_genderValue = Gender.FEMALE;
});
},
),
FlatButton.icon(
label: const Text('Others'),
icon: Radio(
value: Gender.OTHER,
groupValue: _genderValue,
onChanged: (Gender value) {
setState(() {
_genderValue = value;
});
},
),
onPressed: () {
setState(() {
_genderValue = Gender.OTHER;
});
},
)
],
),
),
),
);
}
}
```
## Navigation Drawer
```dart
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
backgroundColor: AppColors.gradient_purple_begin,
title: Text("XSpends")),
drawer: new Drawer(
child: new ListView(
children: [
new UserAccountsDrawerHeader(
accountName: new Text("TakeoffAndroid"),
accountEmail: new Text("takeoffandroid@gmail.com"),
currentAccountPicture: CircleAvatar(
backgroundColor: Colors.yellow,
child: Text('T', style: TextStyle(color: Colors.black87))
),
decoration: new BoxDecoration(
gradient: LinearGradient(
begin: Alignment.centerLeft,
end: Alignment.centerRight,
colors: [
AppColors.gradient_purple_begin,
AppColors.gradient_purple_end
]),
),
),
new ListTile(
leading: Icon(Icons.home),
title: new Text("Home"),
onTap: () {
Navigator.pop(context);
}),
new ListTile(
leading: Icon(Icons.person),
title: new Text("Friends"),
onTap: () {
Navigator.pop(context);
}),
new ListTile(
leading: Icon(Icons.share),
title: new Text("Share"),
onTap: () {
Navigator.pop(context);
}),
new Divider(),
new ListTile(
leading: Icon(Icons.settings),
title: new Text("Settings"),
onTap: () {
Navigator.pop(context);
}),
new ListTile(
leading: Icon(Icons.power_settings_new),
title: new Text("Logout"),
onTap: () {
Navigator.pop(context);
}),
],
),
),
);
}
```
## Input Field
## TextField
(Text box or Edit Text)
### Under Line Style
| Simple | Icon |
|----------------|----------------|
|
|
|
| Prefix | Suffix |
|----------------|----------------|
|
|
|
```dart
TextField(
decoration: InputDecoration(
hintText: "Enter your name!",
hintStyle: TextStyle(fontWeight: FontWeight.w300, color: Colors.blue),
enabledBorder: new UnderlineInputBorder(
borderSide: new BorderSide(color: Colors.blue)),
focusedBorder: UnderlineInputBorder(
borderSide: BorderSide(color: Colors.orange),
),
),
)
```
| Icon | Prefix | Suffix |
|--------------|---------------|----------------|
|```InputDecoration(icon: Icon(Icons.account_circle, color: Colors.blue))```|```InputDecoration(prefixIcon: Icon(Icons.account_circle, color: Colors.blue))```|```InputDecoration(suffixIcon: Icon(Icons.account_circle, color: Colors.blue))```|
### Outer Line Style
```dart
TextField(
decoration: InputDecoration(
hintText: "Enter your name!",
hintStyle: TextStyle(fontWeight: FontWeight.w300, color: Colors.blue),
enabledBorder: new OutlineInputBorder(
borderSide: new BorderSide(color: Colors.blue)),
focusedBorder: OutlineInputBorder(
borderSide: BorderSide(color: Colors.orange),
),
),
)
```
> **Note:** Icon, Prefix Icon and Suffix Icon are similar to Underline TextField
## TextFormField
```dart
TextFormField(
style: TextStyle(color: Colors.white),
obscureText: true, // Use secure text for passwords.
decoration: InputDecoration(
enabledBorder: UnderlineInputBorder(borderSide: BorderSide(color: Colors.white)),
focusedBorder: UnderlineInputBorder(
borderSide: BorderSide(color: Colors.yellow)
),
hintText: 'Password',
hintStyle: TextStyle(color: Colors.white),
labelText: 'Type your password',
labelStyle: TextStyle(color: Colors.yellow))
)
```
## Sliver List
* SliverList takes a delegate parameter which provides the items in the list as they scroll into view.
* You can specify the actual list of children with a SliverChildListDelegate Or build them lazily with a SliverChildBuilderDelegate.
```
SliverList(
delegate: SliverChildListDelegate(
[
Container(color: Colors.red, height: 150.0),
Container(color: Colors.purple, height: 150.0),
Container(color: Colors.green, height: 150.0),
],
),
);
// This builds an infinite scrollable list of differently colored
// Containers.
SliverList(
delegate: SliverChildBuilderDelegate((BuildContext context, int index) {
// To convert this infinite list to a list with three items,
// uncomment the following line:
// if (index > 3) return null;
return Container(color: getRandomColor(), height: 150.0);
},
// Or, uncomment the following line:
// childCount: 3,
),
);
```
> **References:**
1. https://medium.com/@anilcan/forms-in-flutter-6e1364eafdb5
2. https://codingwithjoe.com/building-forms-with-flutter/
## Utilities
Creates Color Utils
```dart
class AppColors {
static const Color colorPrimary = Color.fromARGB(255, 51, 51, 51);
static const Color colorPrimaryDark = Color.fromARGB(255, 41, 41, 41);
static const Color colorAccent = Color.fromARGB(255, 30, 198, 89);
static const Color yellow = Color.fromARGB(255, 252, 163, 38);
static const Color orange = Color.fromARGB(255, 252, 109, 38);
static const Color grey_unselected = Color.fromARGB(255, 96, 96, 96);
static const Color white_card = Color.fromARGB(255, 250, 250, 250);
static const Color chrome_grey = Color.fromARGB(255, 240, 240, 240);
static const Color white = Color.fromARGB(255, 255, 255, 255);
static const Color white_secondary = Color.fromARGB(255, 220, 220, 220);
static const Color white_un_selected = Color.fromARGB(255, 180, 180, 180);
static const Color indigo = Color.fromARGB(255, 51, 105, 231);
static const Color primary_text = Color.fromARGB(255, 51, 51, 51);
static const Color secondary_text = Color.fromARGB(255, 114, 114, 114);
static const Color grey = Color.fromARGB(255, 188, 187, 187);
}
```