I'm using Flutter and I'd like to add a border to a widget (in this case, a Text
widget).
I tried TextStyle
and Text
, but I didn't see how to add a border.
Here is an expanded answer. A DecoratedBox
is what you need to add a border, but I am using a Container
for the convenience of adding margin and padding.
Here is the general setup.
Widget myWidget() {
return Container(
margin: const EdgeInsets.all(30.0),
padding: const EdgeInsets.all(10.0),
decoration: myBoxDecoration(), // <--- BoxDecoration here
child: Text(
"text",
style: TextStyle(fontSize: 30.0),
),
);
}
where the BoxDecoration
is
BoxDecoration myBoxDecoration() {
return BoxDecoration(
border: Border.all(),
);
}
These have a border width of 1
, 3
, and 10
respectively.
BoxDecoration myBoxDecoration() {
return BoxDecoration(
border: Border.all(
width: 1, // <--- border width here
),
);
}
These have a border color of
Colors.red
Colors.blue
Colors.green
Code
BoxDecoration myBoxDecoration() {
return BoxDecoration(
border: Border.all(
color: Colors.red, // <--- border color
width: 5.0,
),
);
}
These have a border side of
Code
BoxDecoration myBoxDecoration() {
return BoxDecoration(
border: Border(
left: BorderSide( // <--- left side
color: Colors.black,
width: 3.0,
),
top: BorderSide( // <--- top side
color: Colors.black,
width: 3.0,
),
),
);
}
These have border radii of 5
, 10
, and 30
respectively.
BoxDecoration myBoxDecoration() {
return BoxDecoration(
border: Border.all(
width: 3.0
),
borderRadius: BorderRadius.all(
Radius.circular(5.0) // <--- border radius here
),
);
}
DecoratedBox
/ BoxDecoration
are very flexible. Read Flutter — BoxDecoration Cheat Sheet for many more ideas.
The best way is using BoxDecoration()
Advantage
Disadvantage
BoxDecoration
only use with Container
widget, so you want to wrap your widget in Container()
Example
Container(
margin: EdgeInsets.all(10),
padding: EdgeInsets.all(10),
alignment: Alignment.center,
decoration: BoxDecoration(
color: Colors.orange,
border: Border.all(
color: Colors.pink[800], // Set border color
width: 3.0), // Set border width
borderRadius: BorderRadius.all(
Radius.circular(10.0)), // Set rounded corner radius
boxShadow: [BoxShadow(blurRadius: 10,color: Colors.black,offset: Offset(1,3))] // Make rounded corner of border
),
child: Text("My demo styling"),
)
As stated in the documentation, Flutter prefers composition over parameters.
Most of the time you're not looking for a property, but instead a wrapper (and sometimes a few helpers/"builder").
For borders, you want DecoratedBox
, which has a decoration
property that defines borders; but also background images or shadows.
Alternatively, like Aziza said , you can use Container
. Which is the combination of DecoratedBox
, SizedBox
and a few other useful widgets.
Here, as theText widget does not have a property that allows us to define a border
, we should wrap it with a widget that allows us to define a border. There are several solutions. But the best solution is the use of BoxDecoration in the Container widget.
Why choose to use BoxDecoration?
Because BoxDecoration offers more customization like the possibility to define:
First, the border
and also define:
An example:
Container(
child:Text(' Hello Word '),
decoration: BoxDecoration(
color: Colors.yellow,
border: Border.all(
color: Colors.red ,
width: 2.0 ,
),
borderRadius: BorderRadius.circular(15),
),
),
Output:
Using BoxDecoration() is the best way to show a border.
Container(
decoration: BoxDecoration(
border: Border.all(
color: Color(0xff000000),
width: 4,
)),
child: // Your child widget
),
You can also view full format here .
You can use Container to contain your widget:
Container(
decoration: BoxDecoration(
border: Border.all(
color: Color(0xff000000),
width: 1,
)),
child: Text()
),
Use a container with Boxdercoration.
BoxDecoration(
border: Border.all(
width: 3.0
),
borderRadius: BorderRadius.circular(10.0)
);
The above answers are also correct, but in case you want to add multiple borders at the same widget, then you can set this
Container(
child: const Center(
child: Text(
'This is your Container',
),
),
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(10),
color: Colors.white,
boxShadow: const [
BoxShadow(color: Colors.green, spreadRadius: 8),
BoxShadow(color: Colors.yellow, spreadRadius: 5),
],
),
height: 50,
)
Wrap that widget with the container
Container(
margin: const EdgeInsets.all(30.0),
padding: const EdgeInsets.all(10.0),
decoration: BoxDecoration(border: Border.all(
color: Colors.black,
width: 1,
),
),
child: Text(
"text",
style: TextStyle(fontSize: 30.0),
),
);
I'm using Flutter and I'd like to add a border to a widget (in this case, a Text widget).
I tried TextStyle and Text, but I didn't see how to add a border.
In case someone would like a outlined/bordered text or apply multiple borders.
You could try this:
you can wrap that widget to DecoratedBox that provide decoration to that widget in that case
Widget textDecoration(String text){ return DecoratedBox( decoration: BoxDecoration( border: Border.all( color: Colors.red, width: 10, ), ), child: Text(text)); }
Rounded corner/border with bottom shadow
Container(
// child it's depend on your requirement
child: const Center(
child: Text(
'This is your Container',
),
),
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(10),
color: Colors.white,
boxShadow: <BoxShadow>[
// shadow color and radius
BoxShadow(
color: Colors.black54,
blurRadius: 15.0,
offset: Offset(0.0, 0.75)
)
],
),
// according your height ex. 50
height: 50,
);
Try the following code:
Container(
margin: margin,
padding: padding,
decoration: BoxDecoration(
border: Border.all(
color: color,
width: width,
),
),
child: Text(
data,
style: TextStyle(fontSize: 30.0),
),
),
Container(
padding: const EdgeInsets.all(16.0),
decoration: BoxDecoration(
border: Border.all(),
),
child: const Text(
"FlutterService",
style: TextStyle(fontSize: 34.0),
),
)
Border.all() creates a black border on all sides of a container. It is a very special type of constructor.
References: How To Add Border To Container in Flutter
I have tried to summarize all the important posibilities when using border
in BoxDecoration
.
Container(
decoration: BoxDecoration(border: Border.all()),
child: const Text("Text"),
),
Container(
decoration: BoxDecoration(
border: Border.all(
width: 4,
color: Colors.green,
strokeAlign: BorderSide.strokeAlignCenter)),
child: const Text("Text"),
),
Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
Container(
decoration: const BoxDecoration(
border: Border(top: BorderSide(width: 2))),
child: const Text("Text"),
),
Container(
decoration: const BoxDecoration(
border: Border(bottom: BorderSide(width: 2))),
child: const Text("Text"),
),
Container(
decoration: const BoxDecoration(
border: Border(
top: BorderSide(width: 2),
bottom: BorderSide(width: 4))),
child: const Text("Text"),
),
],
),
Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: [
Container(
padding: const EdgeInsets.all(10),
decoration: BoxDecoration(
border: Border.all(),
shape: BoxShape.circle),
child: const Text("Text"),
),
Container(
padding: const EdgeInsets.all(10),
decoration: BoxDecoration(
border: Border.all(),
borderRadius: BorderRadius.circular(10),
),
child: const Text("Text"),
),
],
),
Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: [
Container(
padding: const EdgeInsets.all(10),
decoration: BoxDecoration(
border: Border.all(),
borderRadius: const BorderRadius.horizontal(
left: Radius.circular(5), right: Radius.circular(20))
),
child: const Text("Text"),
),
Container(
padding: const EdgeInsets.all(10),
decoration: BoxDecoration(
border: Border.all(),
borderRadius: const BorderRadius.only(
topLeft: Radius.circular(10),
bottomRight: Radius.circular(20))),
child: const Text("Text"),
),
],
),
Text border style:
Stack(
children: <Widget>[
// Stroked text as border.
Text(
'Greetings, planet!',
style: TextStyle(
fontSize: 40,
foreground: Paint()
..style = PaintingStyle.stroke
..strokeWidth = 6
..color = Colors.blue[700]!,
),
),
// Solid text as fill.
Text(
'Greetings, planet!',
style: TextStyle(
fontSize: 40,
color: Colors.grey[300],
),
),
],
)
you can add a border to a widget by wrapping it in a Container widget and specifying the border properties.
Here's an example of how you can add a border to a Text widget:
Container(
decoration: BoxDecoration(
border: Border.all(
color: Colors.black,
width: 2,
),
),
child: Text("This text has a border"),
)
use the Text widget inside a container and use decoration to border the text decoration: BoxDecoration( border: Border.all( color: Color(0xff000000), width: 1, )),
If you want to add border to some text of container then you can easily to do it by applying BoxDecoration to Container.
code :
Container(
decoration: BoxDecoration(
border: Border.all(
color: Colors.redAccent,
width: 1,
),
),
child: Text('Some Text'),
);
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