How can I add a border to a widget in Flutter? - flutter

Question

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.

Answer 1

You can add the Text as a child to a Container that has a BoxDecoration with border property:
Container(
margin: const EdgeInsets.all(15.0),
padding: const EdgeInsets.all(3.0),
decoration: BoxDecoration(
border: Border.all(color: Colors.blueAccent)
),
child: Text('My Awesome Border'),
)

Answer 2

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(),
);
}
Border width
These have a border width of 1, 3, and 10 respectively.
BoxDecoration myBoxDecoration() {
return BoxDecoration(
border: Border.all(
width: 1, // <--- border width here
),
);
}
Border color
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,
),
);
}
Border side
These have a border side of
left (3.0), top (3.0)
bottom (13.0)
left (blue[100], 15.0), top (blue[300], 10.0), right (blue[500], 5.0), bottom (blue[800], 3.0)
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,
),
),
);
}
Border radius
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
),
);
}
Going on
DecoratedBox/BoxDecoration are very flexible. Read Flutter — BoxDecoration Cheat Sheet for many more ideas.

Answer 3

The best way is using BoxDecoration()
Advantage
You can set the border of a widget
You can set the border Color or Width
You can set a Rounded corner of a border
You can add a Shadow of a widget
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"),
)

Answer 4

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)
);
}

Answer 5

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.

Answer 6

Here, as the Text 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:
border Color
border width
border radius
shape
and more ...
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:

Answer 7

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),
),
);

Answer 8

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,
)

Answer 9

Summary
I have tried to summarize all the important posibilities when using border in BoxDecoration.
Outcomes of the below explained borders:
Explaination
Basic
Container(
decoration: BoxDecoration(border: Border.all()),
child: const Text("Text"),
),
BorderColor, width and strokeAlign
Container(
decoration: BoxDecoration(
border: Border.all(
width: 4,
color: Colors.green,
strokeAlign: BorderSide.strokeAlignCenter)),
child: const Text("Text"),
),
Border only on specific side
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"),
),
],
),
Different Shapes
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"),
),
],
),
Curved Border Radius
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"),
),
],
),

Answer 10

You can use Container to contain your widget:
Container(
decoration: BoxDecoration(
border: Border.all(
color: Color(0xff000000),
width: 1,
)),
child: Text()
),

Answer 11

Use a container with Boxdercoration.
BoxDecoration(
border: Border.all(
width: 3.0
),
borderRadius: BorderRadius.circular(10.0)
);

Answer 12

In case someone would like a outlined/bordered text or apply multiple borders.
You could try this:
https://pub.dev/packages/outlined_text
DEMO

Answer 13

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'),
);

Answer 14

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,
);

Answer 15

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),
),
),

Answer 16

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],
),
),
],
)

Answer 17

use the Text widget inside a container and use decoration to border the text
decoration: BoxDecoration(
border: Border.all(
color: Color(0xff000000),
width: 1,
)),

Answer 18

Yes, there's different approaches for that. One of them is:
Wrap it in a container. And use box decoration like this.
Container(
padding: const EdgeInsets.all(16.0),
decoration: BoxDecoration(
border: Border.all(width: 5, color: Colors.red),
borderRadius: BorderRadius.all(Radius.circular(50)),
),
child: const Text(
"Box decoration",
style: TextStyle(fontSize: 34.0),
),
)