Awesome Extensions

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flutter_extension

Let get started 💪

  1. Go to pubspec.yaml
  2. add a awesome_extensions and replace [version] with the latest version:
dependencies:
 awesome_extensions: ^[version]
  1. click the packages get button or flutter pub get

See awesome_extensions for docs & samples

About

An extension to the widget helps reduce the boilerplate and adds some helpful methods. and you can make a responsive design.

Theme Extensions

TextStyle

From the TextStyle Access properties right in the context instance.

// Before
Text('Hello World',style: Theme.of(context).textTheme.labelSmall),

Text('Hello World', style: TextStyle(color: Colors.grey, fontWeight: FontWeight.bold, fontSize: 40)

// After
Text('Hello World',style: context.labelSmall),
// OR
Text('Hello World',style: context.displaySmall),
// If you want to bold text then 
Text('Hello World',style: context.labelSmall?.bold),

Similar fontWeight are:

Similar 2021 TextStyle are:

Text

If you dont want use theme, then we have some other methods:

Text('Hello World')
    .bold()
    .fontSize(25)
    .italic();

Similar methods are:

Theme

From the Theme class. Access your themes right in the context instance.

Media Query Extensions For Responsive Layout

From the MediaQuery Access properties right in the context instance.

// Before
 Container(
     width: MediaQuery.of(context).size.width,
     height: MediaQuery.of(context).size.width,
        )
// After
Container(
     width: context.width,
     height: context.width,
        )

Similar extensions are:

MediaQuery as Inherited Model Old Way X

MediaQuery.of(context).size; MediaQuery.of(context).padding; MediaQuery.of (context). orientation; By calling MediaQuery.of(context).size, the widget will rebuild when any of the MediaQuery properties change (less performant).

New Way ✓

MediaQuery.sizeof(context); MediaQuery.paddingOf(context); MediaQuery.orientation of (context); By calling MediaQuery.sizeof(context), the widget will rebuild only when the size changes, avoiding unnecessary rebuilds.

//Check in what platform the app is running
MyPlatform.isAndroid
MyPlatform.isIOS
MyPlatform.isMacOS
MyPlatform.isWindows
MyPlatform.isLinux
MyPlatform.isFuchsia

//Check the device type
MyPlatform.isMobile
MyPlatform.isDesktop
//All platforms are supported independently in web!
//You can tell if you are running inside a browser
//on Windows, iOS, OSX, Android, etc.
MyPlatform.isWeb


// Returns a value<T> according to the screen size
// can give value for:
// mobile: if the shortestSide is smaller than 600
// tablet: if the shortestSide is smaller than 1200
// desktop: if width is largest than 1200
context.responsiveValue<T>(
    T? mobile,
    T? tablet,
    T? desktop,
),

// Example
Container(
    child: context.responsiveValue(
        mobile: Container(
          color: Colors.yellow,
          width: context.width,
          height: context.height,
        ),
        tablet: Container(
          color: Colors.green,
          width: context.width,
          height: context.height,
        ),
        desktop: Container(
          color: Colors.black,
          width: context.width,
          height: context.height,
        )),
     )

From the Navigator Access properties right in the context instance.

// Before
Navigator.push(
    context,
    MaterialPageRoute(builder: (context) => SecondScreen()),
  );

// After

// for push
context.push(SecondScreen());
context.pushNamed('/home');

// for back , you can also add back result data
context.pop();

// for replace
context.pushReplacement(SecondScreen());
context.pushReplacementNamed('/home');

// popUntil
context.popUntil('/login');

// with rootNavigator
context.push(SecondScreen(), rootNavigator: true);
context.pushReplacement(SecondScreen(), rootNavigator: true);
context.popUntil('/login', rootNavigator: true);

Widget Extensions

This extension is reduced more code.

SizeBox

// Before
SizedBox(
    height : 20.0
   )
// After
// make space of 20.0 height
20.0.heightBox

// for width
20.0.widthBox

Padding

// Before
Padding(
  padding: const EdgeInsets.all(8.0),
  child: Text("text"),
);

// After
Text("text").paddingAll(8.0),

Similar padding extensions are:

Opacity

// Before
Opacity(
  opacity: 0.5,
  child: Text("text"),
)

// After
Text("text").setOpacity(0.5)

Expanded

/// Before
Expanded(
  child: Text("text"),
)

// After
Text("text").expanded()

Flexible

/// Before
Flexible(
  child: Text("text"),
)

// After
Text("text").flexible()

Other

Now we can just add round corners, shadows, align, and added gestures to our Widgets.

Container(
      height: 100,
       width: 100,)
         .withRoundCorners(backgroundColor: Colors.grey)
         .withShadow()
         .alignAtCenter()
         .toCenter()
         .withTooltip('My Tooltip')
         .paddingOnly(left: 10)
         .paddingAll(20)
         .onTap(() => print('tap'))
         .onLongPress(() => print('long press'))

Automatic detect platform and show material and cupertino dialog

context.showAlertDialog(title: 'title',
                        message: 'message',)

Shimmer Effect

OYCE3

Container(height: 50,width: 50,).applyShimmer();

you can also change color of shimmer using Color baseColor, Color highlightColor.

Nil Widget

Sometimes, according to a condition, we want to display nothing. Usually when we can’t return null, we would return something like const SizedBox() for example.

This is good, but it has some performance impacts since SizedBox creates a RenderObject. The RenderObject lives in the render tree and some computations are performed on it, even if it paints nothing on the screen.

We can do better, we can have a widget which does not create a RenderObject, while being still valid. The Nil widget is the minimal implementation for this use case. It only creates an Element and does nothing while it’s building. Because the optimal way to use it, is to call const Nil(), it also comes with a nil constant that you can use everywhere (which is a const Nil()).

// Good
text != null ? Text(text) : const Container()
// Better
text != null ? Text(text) : const SizedBox()
// BEST
text != null ? Text(text) : nil
or
if (text != null) Text(text)

Date Extensions

// for check two date are same or not
date.isSameDate(otherdate);    // its return bool (true/false)

// for check date is today's date
date.isToday    // its return bool (true/false)

// for check this date is yesterday's date
date.isYesterday    // its return bool (true/false)

Number Extensions

Future & Duration

Utility to delay some callback (or code execution).

print('+ wait for 2 seconds');
await 2.delay();
print('- 2 seconds completed');
print('+ callback in 1.2sec');
1.delay(() => print('- 1.2sec callback called'));

Easy way to make Durations from numbers.

print(1.seconds + 200.milliseconds);
print(1.hours + 30.minutes);
print(1.5.hours);

5.isLowerThan(4);
5.isGreaterThan(4);
5.isEqual(4);

String Extensions

//your name => Your Name,
'your name'.capitalize();
//your name => Your name,
'your name'.capitalizeFirst();
//your name => yourname
'your name'.removeAllWhitespace();

// match any RegExp
'dsts'.hasMatch("'r'[A-Z]");
//return bool if match RegExp
'123'.isNumericOnly();
'dsf'.isAlphabetOnly();
'Ajh'.hasCapitalletter();
'true'.isBool();

Url Strategy

With a simple call of setPathUrlStrategy, your Flutter web app does not have a leading # in the URL anymore 🚀

void main() {
// Here we set the URL strategy for our web app.
// It is safe to call this function when running on mobile or desktop as well.
setPathUrlStrategy();
runApp(MyApp());
}

Avatar Image

AvatarImage(
   backgroundImage: NetworkImage(
    'https://mdbootstrap.com/img/Photos/Avatars/img%20%281%29.jpg'),
     shape: AvatarImageShape.standard,
     size: ImageSize.LARGE,
     child: Text('Lucky'),
          backgroundColor: Colors.red,
      ),

AvatarImage(
    shape: AvatarImageShape.circle,
    child: Text('JP'),
    backgroundColor: Colors.red,
      ),

avatar-image avatar-name

Properties Description
child type of [Widget], which can have text , icon etc
backgroundColor Color to fill the background of avatar
foregroundColor Color to change the textColor inside the avatar
radius size of the avatar
minRadius minimum size of the avatar
maxRadius maximun size of the avatar
size size of the avatar i.e ImageSize.large, ImageSize.medium, ImageSize.small
shape shape of the avatar i.e, AvatarImageShape.standard, AvatarImageShape.circle, AvatarImageShape.square
borderRadius extra radius to avatar shapes, not applicable to circular avatar

Support

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Supported by JetBrains Open Source