How to supply an initial value to a text field?

Posted by Andre Scott | Updated on | Dart


If you want to supply an initial value to a text field? Use the below code to supply an initial value to a text field.

List use of double dot (.) in dart?

Posted by Jessica Taylor | Updated on | Dart


List use of double dot (.) in dart? .. is known as cascade notation. It allows you to not repeat the same target if you want to call several methods on the same object.

How to format a date with Dart?

Posted by Pinki | Updated on | Dart


If you want to format a date with Dart? You can use the intl package (installer) to format dates. For en_US formats, it’s quite simple: There are many options for formatting. From the docs:

TextField inside of Row causes layout exception

Posted by Jennifer | Updated on | Dart


TextField inside of Row causes layout exception. The Row widget wants to determine the intrinsic size of its non-flexible children so it knows how much space that it has left for the flexible ones. However, …

How to build a Singleton in Dart?

Posted by Andre Scott | Updated on | Dart


Want to build a Singleton in Dart? Thanks to Dart’s factory constructors, it’s easy to build a singleton: You can construct it like this:

How to change highlightShape size in the InkResponse widget

Posted by Jennifer | Updated on | Dart


If you want to change highlightShape size in the InkResponse widget Use the following little hack you could copy the source code and create your own inkresponse modifying the values:

Running periodic tasks in Dart and Flutter in background even if app is closed

Posted by Pinki | Updated on | Dart


Running periodic tasks in Dart and Flutter in background even if app is closed. You can write the native android service which runs for every one minute then on first launch of your flutter app …

How to access other classes method in Dart?

Posted by Andre Scott | Updated on | Dart


Want to access other classes method in Dart? First, note that any method that starts with an underscore will be considered private in the Dart. look here . In this case, you should pass the …

Fixed column and row header for DataTable on Flutter Dart

Posted by Jennifer | Updated on | Dart


Fixed column and row header for DataTable on Flutter Dart. Basically it’s an horizontal scroll for the first row, a vertical scroll for the first column and a mixed horizontal and vertical scroll for the …

How to wait for a Class to initialize?

Posted by Andre Scott | Updated on | Dart


Want to wait for a Class to initialize? You can refactor your Calendar class to expose a Future that completes the when the Calendar is ready to use: Then you can await the Future, e.g.:

How to access the contents of a StatefulWidget’s State during a unit test?

Posted by Andre Scott | Updated on | Dart


How to access the contents of a StatefulWidget’s State during a unit test? Answer: Create the widget using tester.pumpWidgets, then use tester.state(find.foo) to find the State (where find.foo is a finder that finds the widget). …

Position widget in stack with percent

Posted by Editorial Staff | Updated on | Dart


Position widget in stack with percent. You can combine a Positioned.fill and LayoutBuilder to achieve such result.

How Does Dart AOT Work?

Posted by Jennifer | Updated on | Dart


How Does Dart AOT Work? A compiler creates the binary code from Dart source code. For mobile applications the source code is compiled for multiple processors ARM, ARM64, x64 and for both platforms – Android …

How to efficiently initialize multiple final fields that depend on the same calculation in Dart?

Posted by Editorial Staff | Updated on | Dart


Want to efficiently initialize multiple final fields that depend on the same calculation in Dart? Calculate the values in a factory constructor:

How to implement inheritance in dart?

Posted by Jessica Taylor | Updated on | Dart


If you want to implement inheritance in dart? You need to check out dart syntax which is a bit different from languages like C# using : for inheritance. This is how you do it on …