Flutter expanded

Join Stack Overflow to learn, share knowledge, and build your career. Connect and share knowledge within a single location that is structured and easy to search. I've used both Expanded and Flexible widgets and they seem to work same. You may want to use Flexible over Expanded when you want a different fituseful in some responsive layouts. The difference between FlexFit. You may use Flexible to resize the widgets in rows and columns.

It's mainly used to adjust the space of the different child widgets while keeping the relation with their parent widgets. Meanwhile, Expanded changes the constraints sent to the children of rows and columns ; it helps to fill the available spaces there. Therefore, when you wrap your child in an Expanded widget it fills up the empty spaces. Providing these videos from the Flutter's Official YouTube channel just to help out people, who might look for this in the upcoming future The only difference if you use Flexible instead of Expandedis that Flexible lets its child have the same or smaller width than the Flexible itself, while Expanded forces its child to have the exact same width of the Expanded.

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Flutter Responsive Apps: Flexible vs Expanded

Asked 2 years, 5 months ago. Active 4 months ago. Viewed 78k times. What is the difference between Expanded and Flexible? Improve this question. Paresh Mangukiya 9, 4 4 gold badges 65 65 silver badges 65 65 bronze badges. Add a comment. Active Oldest Votes. Improve this answer. Raouf Rahiche Raouf Rahiche Flexible takes only the needed space, and Expanded takes all available space, respecting the flex factor.

See the docs of the Expanded widget for more info. Flexible and Container both take the needed space. Expanded is just a shorthand for Flexible Using expanded this way: Expanded child: Foo; is strictly equivalent to: Flexible fit: FlexFit. In easy words, Flexible. Some children might take up the entire space and some not, depending what their types are. Parvesh Khan Parvesh Khan 6 6 silver badges 6 6 bronze badges. Great explanation for android developers! Andrey Turkovsky Andrey Turkovsky Expanded: Flexible:.As you know we divide the article into different sections.

A widget that expands a child of a RowColumnor Flex so that the child fills the available space. For example, When you are working with Row or Column and using. It will leave a gap between children. So Inorder to fill the available space we need Expanded Widget. I think now you have a clear idea when to use Expanded Widget. When you want to fill a gap between children children of Row, Column or Flex you can use Expanded Widget.

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Create an account. Privacy Policy. Sign up. Password recovery. Recover your password. Home Flutter How to use expanded widget - Flutter Widgets. How to use expanded widget — Flutter Widgets. By Akram Chauhan. November 12, What is the expanded widget in Flutter? Why we need Expanded Widget?

When to use Expanded Widget? How to use Expanded Widget? Without adding much theoretical content let me show you code for using Expanded Widget. Hello Everyone, First of all, There are two plugins which you can use to implement Admob Ads in any flutter application.

Read more. What is SafeArea Widget does A widget that sets its child by enough padding to avoid intrusions by the operating system and improve the userExpanded widget in flutter can expand in all available space on screen if developer dose not specify width and height of children. Expanded widget is can expend in Row and Column widgets. I am creating 2 Container widgets with fix width and height. Between the both Container widgets i am creating Expanded width with fix width only.

I am not specifying height of Expanded widget. So it will automatically occupy all the free space on screen in height manner. Using this example you can easily understand the functionality of Expanded widget. Create void main runApp method and here we would call our main MyApp class. Creating 2 Container widget with fixed width and height and 1 Expanded widget with only fixed width inside Column widget.

Complete source code for main. Flutter Version 2. Flutter Channel Stable. Container color: Colors. Also Read:. Flutter This class or a class which this class inherits from is marked as ' immutable' Error Solutio Leave a Reply Cancel reply Your email address will not be published.

Container color : Colors.Which one to use for better responsiveness? Both Expanded and Flexible widgets are widgets to create responsive mobile applications in Flutter. You can read this very basic post or watch the video on how Expanded widgets would solve the issue of responsive design in Flutter. In this post, I am going to talk about Expanded and Flexible widgets and the basic differences between them and when to use them.

Both the widgets are tightly coupled with Column or Row or base Flex widget. They are allowed to alter the child widget along the main axis of the parent Column or Row widget. For the Column, the main axis is vertical and for the Row, the main axis is horizontal. The cross axis dimension is not altered by either Expanded or Flexible.

Again, for both the widgets, the main purpose is responsive design, i. For example, the following responsive problem is easily fixed by using Flexible or Expanded. So if you wrap your widget with a Flexible, there are two things that can happen based on the parameter fit. If you wrap your widget with loose fit, your widget will try to take up the remaining least amount of space available along the main axis. For example if you have a container inside a column with height pixels but the only available space is maybe pixels, the container ends up being pixels.

On the other hand, if our container is pixels but the available space is more than that, the container will be pixels which was assigned to it.

When tight fit is used, the widgets dimension inside the Column or Row along the main axis has no bearing at all. When you wrap the container with a Flexible with a tight fit, the Flexible will ignore the height of the child container altogether and take up whatever space is available, could be 10 pixels, could be pixels, whatever space is left.

Expanded widget is a shorthand for Flexible with tight fit. As simple as that. So our code with Flexible with tight fit would be:. So, thats it, let me know what you think and if they are any other points to add to the analysis.

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Connect and share knowledge within a single location that is structured and easy to search. I have a screen with Image. I wrapped ListView with Expanded. How to wrap this column with SingleChildScrollView?

flutter expanded

I need to move screen when the keyboard is open to see what I am writing. When I wrap my column I have this error. The answer is in the error itself.

When the column is inside a view that is scrollable, the column is trying to shrink-wrap its content but since you used Expanded as a child of the column it is working opposite to the column trying to shrink-wrap its children. This is causing this error because these two directives are completely opposite to each other. I got this solution from git issues when I get into the same situation.

I don't have the git link. I think it may help you. You'll just need to make sure the screen content you put inside ConstrainedBox is not bigger than the height of the screen.

flutter expanded

Otherwise set the height of ConstrainedBox to height of the content you want to display on the screen. As already pointed out, because you are using a scrollable, you can't expand to the infinity theoretically speakingthat's what's happening when you try to expand your ListView that is nested in a SingleChildScrollView.

You can try using a NestedScrollViewor, if it fits your demands and because you have commented out this line:. You can just wrap your ListView in a ConstrainedBox or even just a regular Container with that height, for example, instead of the Expandedlike so:.

Since you are already in a scrollable, you shouldn't have issues with smaller screens, because the whole tree is scrollable. The trick is to only apply the ScrollView when you need to, and otherwise to let the content expand. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. Ask Question. Asked 1 year, 10 months ago. Active 6 months ago.

Viewed 49k times. Improve this question. Alex 1 1 gold badge 6 6 silver badges 16 16 bronze badges. Filip Filip 1 1 gold badge 8 8 silver badges 18 18 bronze badges.An Expansion tile similar to the list tile supports leading widget,checkbox option and programatic control with content expansion animation.

I will try to keep adding suggested features as i go. Sign in. Help Pub. Flutter Using packages Developing packages and plugins Publishing a package.

Dart Using packages Publishing a package. Getting Started 1. Depend on it Add this to your package's pubspec. Usage Property Description Default required Text title Text Widget representing the title of the tile required required Widget content Content which expands required required ExpandedTileController controller Tile Controller required Widget leading leading widget before the title null Icon expandedIcon.

Icon Icons. Color 0xfffafafa Color contentBackgroundColor. Color 0xffeeeeee Color headerSplashColor. Duration milliseconds: Curve expansionAnimationcurve. Must not set checkable as false and define onChecked. Built With Flutter - Beatiful native apps in record time.

Android Studio - Tools for building apps on every type of Android device. Visual Studio Code - Code editing. Versioning V0.Images and GIFs can also be used as a background to enhance the beauty of the card, which would expand when the card is expanded. The Expansion card has a wide range of properties that can be manipulated to changes the effects of the expansion card.

In this article, we will look into the properties and implementation of the Expansion card. For it, we will be building a simple app and implementing the Expansion card into it. Create a Class say, Myapp and extended it through a Stateless Widget to establish the root of the application.

flutter expanded

Follow this by extending another class say, MainApp through a StatelessWidget to provide an appbar and a body to the application as shown below:. Now design how the Expansion card is supposed to function at this stage inside the ExpansionCard widget. Here we will use the GeeksFoeGeeks logo as a background of the card with the main text that is shown during the shrunk stage and a secondary text when the card expands.

Writing code in comment? Please use ide. Skip to content. Related Articles. Last Updated : 15 Feb, Properties of Expansion Card: background: It is used to set the background of the card.

Import the dependency to the main.

How to use expanded widget – Flutter Widgets

Structure a basic app for further implementation of the expansion card. Call the ExpansionCard method in the body of the app Set up the properties while the card is shrunk and expanded respectively. Recommended Articles. Article Contributed By :.

flutter expanded

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