How to change TextField's height and width? - flutter

Question

How to customise TextField's width and height?

Answer 1

To adjust the width, you could wrap your TextField with a SizedBox widget, like so:
const SizedBox(
width: 100.0,
child: TextField(),
)
I'm not really sure what you're after when it comes to the height of the TextField but you could definitely have a look at the TextStyle widget, with which you can manipulate the fontSize and/or height
const SizedBox(
width: 100.0,
child: TextField(
style: TextStyle(fontSize: 40.0, height: 2.0, color: Colors.black),
),
)
Bear in mind that the height in the TextStyle is a multiplier of the font size, as per comments on the property itself:
The height of this text span, as a multiple of the font size.
When [height] is null or omitted, the line height will be determined
by the font's metrics directly, which may differ from the fontSize.
When [height] is non-null, the line height of the span of text will be a
multiple of [fontSize] and be exactly fontSize * height logical pixels
tall.
Last but not least, you might want to have a look at the decoration property of you TextField, which gives you a lot of possibilities
EDIT: How to change the inner padding/margin of the TextField
You could play around with the InputDecoration and the decoration property of the TextField. For instance, you could do something like this:
const TextField(
decoration: InputDecoration(
contentPadding: EdgeInsets.symmetric(vertical: 40.0),
),
)

Answer 2

I think you want to change the inner padding/margin of the TextField.
You can do that by adding isDense: true and contentPadding: EdgeInsets.all(8) properties as follow:
Container(
padding: EdgeInsets.all(12),
child: Column(
children: <Widget>[
TextField(
decoration: InputDecoration(
border: OutlineInputBorder(),
labelText: 'Default TextField',
),
),
SizedBox(height: 16,),
TextField(
decoration: InputDecoration(
border: OutlineInputBorder(),
labelText: 'Densed TextField',
isDense: true, // Added this
),
),
SizedBox(height: 16,),
TextField(
decoration: InputDecoration(
border: OutlineInputBorder(),
labelText: 'Even Densed TextFiled',
isDense: true, // Added this
contentPadding: EdgeInsets.all(8), // Added this
),
)
],
),
)
It will be displayed as:

Answer 3

Screenshot:
You can do it in many ways:
Using maxLines + expands:
SizedBox(
width: 240, // <-- TextField width
height: 120, // <-- TextField height
child: TextField(
maxLines: null,
expands: true,
keyboardType: TextInputType.multiline,
decoration: InputDecoration(filled: true, hintText: 'Enter a message'),
),
)
Using just maxLines:
Widget _buildTextField() {
final maxLines = 5;
return Container(
margin: EdgeInsets.all(12),
height: maxLines * 24.0,
child: TextField(
maxLines: maxLines,
keyboardType: TextInputType.multiline,
decoration: InputDecoration(filled: true, hintText: 'Enter a message'),
),
);
}

Answer 4

This answer works, but it will have conflicts when the input field is in error state, for a better approach and a better control you can use this.
InputDecoration(
isCollapsed: true,
contentPadding: EdgeInsets.all(9),
)

Answer 5

If you want to increase the height of TextFormField dynamically while typing the text in it. Set maxLines to null. Like
TextFormField(
onSaved: (newText) {
enteredTextEmail = newText;
},
obscureText: false,
keyboardType: TextInputType.emailAddress,
validator: validateName,
maxLines: null,
// style: style,
decoration: InputDecoration(
contentPadding: EdgeInsets.fromLTRB(5.0, 10.0, 5.0, 10.0),
hintText: "Enter Question",
labelText: "Enter Question",
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(10.0))),
),

Answer 6

Wrap TextField in SizedBox for the width
SizedBox(
height: 40,
width: 150,
child: TextField(),
)

Answer 7

You can try the margin property in the Container. Wrap the TextField inside a Container and adjust the margin property.
new Container(
margin: const EdgeInsets.only(right: 10, left: 10),
child: new TextField(
decoration: new InputDecoration(
hintText: 'username',
icon: new Icon(Icons.person)),
)
),

Answer 8

If you use "suffixIcon" to collapse the height of the TextField add:
suffixIconConstraints
TextField(
style: TextStyle(fontSize: r * 1.8, color: Colors.black87),
decoration: InputDecoration(
isDense: true,
contentPadding: EdgeInsets.symmetric(vertical: r * 1.6, horizontal: r * 1.6),
suffixIcon: Icon(Icons.search, color: Colors.black54),
suffixIconConstraints: BoxConstraints(minWidth: 32, minHeight: 32),
),
)

Answer 9

simply wrap the TextField() in SizedBox() and give the height of the sized box

Answer 10

use contentPadding, it will reduce the textbox or dropdown list height
InputDecorator(
decoration: InputDecoration(
errorStyle: TextStyle(
color: Colors.redAccent, fontSize: 16.0),
hintText: 'Please select expense',
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(1.0),
),
contentPadding: EdgeInsets.all(8)),//Add this edge option
child: DropdownButton(
isExpanded: true,
isDense: true,
itemHeight: 50.0,
hint: Text(
'Please choose a location'), // Not necessary for Option 1
value: _selectedLocation,
onChanged: (newValue) {
setState(() {
_selectedLocation = newValue;
});
},
items: citys.map((location) {
return DropdownMenuItem(
child: new Text(location.name),
value: location.id,
);
}).toList(),
),
),

Answer 11

Set minLines: null, maxLines: null and expands:true to let the TextField fill the height of its parent widget:
Container(
child: TextField(
minLines: null,
maxLines: null,
expands: true
)
)
Refere to these docs for the same:https://api.flutter.dev/flutter/material/TextField/expands.html
And for width, you can do this:
Container(
width: 100,
child: TextField(
)
)
to let the TextField fill its parent widget's width(100 pixels in this case)

Answer 12

Adjust Height using contentPadding instead of SizeBox or Container
Container(
width: width * 0.85,
child: TextFormField(
textInputAction: TextInputAction.next,
textAlignVertical: TextAlignVertical.center,
decoration: InputDecoration(
contentPadding: const EdgeInsets.symmetric(vertical: 10), //Imp Line
isDense: true,
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(5),
borderSide: const BorderSide(
width: 0.5,
color: Constants.secondaryColourLight,
)),
),),)
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Answer 13

Finally, I got my solution using this trick.
Provide Height and width of sizedbox and set expand the property to true. Also, set maxLines to null and minLines to null.
SizedBox(
height: SizeConfig.screenWidth * 0.1377,
child: TextFormField(
validator: validator,
enabled: isEnabled,
expands: true,
maxLines: null,
minLines: null,
),
);

Answer 14

TextField( minLines: 1, maxLines: 5, maxLengthEnforced: true)

Answer 15

int numLines = 0;
Container(
height: numLines < 7 ? 148 * WidgetsConstant.height: numLines * WidgetsConstant.height * 24,
child: TextFormField(
controller: _bodyText,
maxLines: numLines < 7 ? 148 : numLines,
keyboardType: TextInputType.multiline,
textInputAction: TextInputAction.newline,
onChanged: (String value) {
setState(() {
numLines = '\n'.allMatches(value).length + 1;
});
},
),
),

Answer 16

The perfect way to get rid of padding is to use InputDecoration.collapsed.
It wraps the GestureDetector with a Container and decorates the Container with as much Padding, Border, and Decoration as needed.
GestureDetector(
onTap: () => _focusNode.requestFocus(),
child: Container(
padding: const EdgeInsets.all(10),
decoration: BoxDecoration(
color: Colors.grey,
borderRadius: BorderRadius.circular(4),
),
child: TextField(
focusNode: _focusNode,
decoration: const InputDecoration.collapsed(
hintText: 'Search...',
border: OutlineInputBorder(
borderSide: BorderSide(
width: 0,
style: BorderStyle.none,
),
),
),
),
),
);
To display an icon, change the Container child to Row, and use Icon and a TextField wrapped with Expanded.

Answer 17

To increase the height of TextField Widget just make use of the maxLines: properties that comes with the widget. For Example:
TextField(
maxLines: 5
) // it will increase the height and width of the Textfield.

Answer 18

You can simply wrap Text field widget in padding widget.....
Like this,
Padding(
padding: EdgeInsets.only(left: 5.0, right: 5.0),
child: TextField(
cursorColor: Colors.blue,
decoration: InputDecoration(
labelText: 'Email',
hintText: 'xyz#gmail.com',
//labelStyle: textStyle,
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(5),
borderSide: BorderSide(width: 2, color: Colors.blue,)),
focusedBorder: OutlineInputBorder(
borderRadius: BorderRadius.circular(10),
borderSide: BorderSide(width: 2, color: Colors.green)),
)
),
),

Answer 19

You can change max
minLines: 4,
maxLines: 6,

Answer 20

Provide a maxLines and add a BoxConstraints with width and height in InputDecoration.
TextField(
maxLines: 10,
decoration: InputDecoration(
border: OutlineInputBorder(borderRadius: BorderRadius.circular(10)),
constraints: BoxConstraints.tightFor(width: 300, height: 100),
),
);

Answer 21

TextField(
decoration: InputDecoration(
border: OutlineInputBorder(borderRadius: BorderRadius.circular(10)),
constraints: BoxConstraints(maxHeight:48,maxWidth: 327,),
),
);