The responsive builder package contains widgets that allows you to create a readable responsive UI. The package is inspired by the Responsive UI Flutter series created by FilledStacks.
It aims to provide you with widgets that make it easy to build different UI's along two different Axis. Orientation x ScreenType. This means you can have a separate layout for Mobile - Landscape, Mobile - Portrait, Tablet - Landscape and Tablet-Portrait.
If you follow along with the series you will have a complete understanding of how it's built and how to use it. Part 2 goes over how we build the example included in this project.
Add responsive_builder as dependency to your pubspec file.
responsive_builder:
This package provides a widget called ResponsiveBuilder that provides you with a builder function that returns the current SizingInformation. The SizingInformation includes the DeviceScreenType, screenSize and localWidgetSize. This can be used for fine grained responsive control from a view level down to per widget responsive level.
The ResponsiveBuilder is used as any other builder widget.
// import the package
import 'package:responsive_builder/responsive_builder.dart';
// Use the widget
ResponsiveBuilder(
builder: (context, sizingInformation) {
// Check the sizing information here and return your UI
if (sizingInformation.deviceScreenType == DeviceScreenType.Desktop) {
return Container(color:Colors.blue);
}
if (sizingInformation.deviceScreenType == DeviceScreenType.Tablet) {
return Container(color:Colors.red);
}
if (sizingInformation.deviceScreenType == DeviceScreenType.Watch) {
return Container(color:Colors.yellow);
}
return Container(color:Colors.purple);
},
},
);
}This will return different colour containers depending on which device it's being shown on. A simple way to test this is to either run your code on Flutter web and resize the window or add the device_preview package and view on different devices.
This widget can be seen as a duplicate of the OrientationBuilder that comes with Flutter, but the point of this library is to help you produce a readable responsive UI code base. As mentioned in the follow along tutorial I didn't want responsive code riddled with conditionals around orientation, MediaQuery or Renderbox sizes. That's why I created this builder.
The usage is easy. Provide a builder function that returns a UI for each of the orientations.
// import the package
import 'package:responsive_builder/responsive_builder.dart';
// Return a widget function per orientation
OrientationLayoutBuilder(
portrait: (context) => Container(color: Colors.green),
landscape: (context) => Container(color: Colors.pink),
),This will return a different coloured container when you swap orientations for your device. In a more readable manner than checking the orientation with a conditional.
Sometimes you want your app to stay in a certain orientation. use enforcePortrait or enforceLandscape in OrientationLayoutBuilder to enforce this.
This widget is similar to the Orientation Layout Builder in that it takes in Widgets that are named and displayed for different screen types.
// import the package
import 'package:responsive_builder/responsive_builder.dart';
// Construct and pass in a widget per screen type
ScreenTypeLayout(
mobile: Container(color:Colors.blue)
tablet: Container(color: Colors.yellow),
desktop: Container(color: Colors.red),
watch: Container(color: Colors.purple),
);If you don't want to build all the widgets at once, you can use the widget builder. A widget for the right type of screen will be created only when needed.
// Construct and pass in a widget builder per screen type
ScreenTypeLayout.builder(
mobile: (BuildContext context) => Container(color:Colors.blue),
tablet: (BuildContext context) => Container(color:Colors.yellow),
desktop: (BuildContext context) => Container(color:Colors.red),
watch: (BuildContext context) => Container(color:Colors.purple),
);If you wish to define your own custom break points you can do so by supplying either the ScreenTypeLayout or ResponsiveBuilder widgets with a breakpoints argument.
// import the package
import 'package:responsive_builder/responsive_builder.dart';
//ScreenTypeLayout with custom breakpoints supplied
ScreenTypeLayout(
breakpoints: ScreenBreakpoints(
tablet: 600,
desktop: 950,
watch: 300
),
mobile: Container(color:Colors.blue)
tablet: Container(color: Colors.yellow),
desktop: Container(color: Colors.red),
watch: Container(color: Colors.purple),
);To get a more in depth run through of this package I would highly recommend watching this tutorial where I show you how it was built and how to use it.
- Fork it!
- Create your feature branch:
git checkout -b my-new-feature - Commit your changes:
git commit -am 'Add some feature' - Push to the branch:
git push origin my-new-feature - Submit a pull request.