In Flutter, DropdownButtonFormField's modal list keeps growing to fill some height limit that seems to be ~90% of the screen (or possibly, and more likely, the Container it's in). When it reaches that limit, it becomes scrollable. Is it possible to set that height limit?
Here's the code I'm working with
Scaffold(
appBar: AppBar(title: Text(widget.title)),
body: Container(
padding: EdgeInsets.fromLTRB(5, 5, 5, 5),
child: Form(
child: ListView(
scrollDirection: Axis.vertical,
children: <Widget>[
//other widgets here
DropdownButtonFormField(items: this.dropDownItems),
],
),
)),
);
I was checking the code of DropDown and there is no property to set the height of the Dialog, it just fill almost the screen.
I made a small change to the class and you can include to your project if you want:
https://gist.github.com/tudor07/9f886102f3cb2f69314e159ea10572e1
Usage
1- Add the file into your project.
2- Import the file with an alias to avoid conflicts.
import 'custom_dropdown.dart' as custom;
3- Use the alias in your Widgets related to the DropDown, and add the height property:
Scaffold(
appBar: AppBar(title: Text(widget.title)),
body: Container(
padding: EdgeInsets.fromLTRB(5, 5, 5, 5),
child: Form(
child: ListView(
scrollDirection: Axis.vertical,
children: <Widget>[
//other widgets here
custom.DropdownButtonFormField(
height: 200.0,
items: this.dropDownItems),
],
),
)),
);
4- Don't forget to add the alias also in your DropdownMenuItem like this :
custom.DropdownMenuItem(
child: Text("Sample Tex"),
value: "any_value",
),
with this lines you can use DropdownButtonFormFieldlike a cheaps:
isDense: false,
itemHeight: 60,//what you need for height
so your code will be this :
Scaffold(
appBar: AppBar(title: Text(widget.title)),
body: Container(
padding: EdgeInsets.fromLTRB(5, 5, 5, 5),
child: Form(
child: ListView(
scrollDirection: Axis.vertical,
children: <Widget>[
//other widgets here
DropdownButtonFormField(items: this.dropDownItems
isDense: false,
itemHeight: 60,//what you need for height
),
],
),
)),
);
I spent over 30 minutes searching for answers!
I simply used the "menuMaxHeight" property of DropdownButton
It solved the problem
e.g
child: DropdownButton(
menuMaxHeight: 300,
This works!
DropdownButtonHideUnderline(
child: Container(
height: // some height,
padding: // add padding
decoration: // add decoration
child: DropdownButtonFormField(
decoration: InputDecoration.collapsed(hintText: ''),
// add some function according to you
),
),
)
**This container decoration is responsible for showing decoration in your dropDown button **
If you are using DropdownButton2 use dropdownMaxHeight: 300, for item list height
DropdownButtonHideUnderline(
child: DropdownButton2(
isExpanded: true, // For Expanded view (cover rest of the container width)
dropdownMaxHeight: 300, // For List Height
hint: ......
items: ......
)
)
I'm attempting to create a scrollable listview inside of a container which also contains a static image. However, the listview doesn't appear to be scrollable and I get a "bottom overflow by x pixels" artifact on my app.
static List<Widget> getClubs() {
var myClubs = new List<Widget>();
for (var i = 0; i < 10; i++) {
myClubs.add(new Padding(
padding: EdgeInsets.all(8.0),
child: new CircleAvatar(
backgroundImage:
new NetworkImage("https://i.imgur.com/p2oUDLD.png"),
backgroundColor: Colors.black,
radius: 34.0,
)));
}
return myClubs;
}
final leftSection = new Container(
color: Color(0xFF212121),
width: 100,
child: Column(
children: <Widget>[
SizedBox(height: 20.0),
new Image.asset(
'assets/logo.png',
alignment: Alignment.center,
),
SizedBox(height: 10.0),
new Container(
child: new ListView(
shrinkWrap: true,
padding: const EdgeInsets.all(5.0),
children: getClubs(),
))
],
));
You can use Expanded widget or set the height for the Container.
I would also recommend Wrap for anyone running into an issue where a container is sized wrong within the listview, causing an overflow:
new Container(
alignment: Alignment.center,
child: Wrap( //the magic
children: [
new Container(),
],
),
),
Sometimes best way to fix an estimated height is using sizedbox
int heightToBeReduced = 380;
SizedBox(
height: MediaQuery.of(context).size.height - heightToBeReduced,
child: ListView....
)
wrap the Column in an Expanded widget:
Expanded(
child: Column(
),
),
Another way is to wrap the Column in a Flexible widget and specify a flex factor.
Flexible(
flex: 1,
child: Column(
children: [
],
),
),
I used a Flexible in a Row to control the output of the listview builder
Define the scollController
final _scrollController = ScrollController();
Define the ListView builder
ListView builder = ListView.builder(
itemCount: listPerformance?.length,
shrinkWrap: true,
itemBuilder: (context, index) {
return PerformanceCardWidget(performanceView: listPerformance[index]);
});
Define a flexible that outputs the listview builder contents
Row(crossAxisAlignment: CrossAxisAlignment.start, children: [
Flexible(
flex: 6,
fit: FlexFit.loose,
child: Scrollbar(
isAlwaysShown: true,
controller: _scrollController,
child: SingleChildScrollView(
controller: _scrollController, child: builder))
)
])
I'm trying to make a bottomsheet that has a text field and autofocus is set to true so that the keyboard pops up. But, bottomsheet is overlapped by the keyboard. Is there a way to move bottomsheet above the keyboard?
Padding(
padding:
EdgeInsets.only(bottom: MediaQuery.of(context).viewInsets.bottom),
child: Column(children: <Widget>[
TextField(
autofocus: true,
decoration: InputDecoration(hintText: 'Title'),
),
TextField(
decoration: InputDecoration(hintText: 'Details!'),
keyboardType: TextInputType.multiline,
maxLines: 4,
),
TextField(
decoration: InputDecoration(hintText: 'Additional details!'),
keyboardType: TextInputType.multiline,
maxLines: 4,
),]);
To fix this issue
All you need is to use Keyboard padding using MediaQuery.of(context).viewInsets.bottom
For more insurance, set isScrollControlled = true of the BottomSheetDialog this will allow the bottom sheet to take the full required height.
Note
If your BottomSheetModel is Column make sure you add mainAxisSize: MainAxisSize.min, otherwise the sheet will cover the whole screen.
Works with multiple TextField or TextFormField
Example
showModalBottomSheet(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.vertical(top: Radius.circular(25.0))),
backgroundColor: Colors.black,
context: context,
isScrollControlled: true,
builder: (context) => Padding(
padding: EdgeInsets.only(
bottom: MediaQuery.of(context).viewInsets.bottom),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Padding(
padding: const EdgeInsets.symmetric(horizontal: 12.0),
child: Text('Enter your address',
style: TextStyles.textBody2),
),
SizedBox(
height: 8.0,
),
TextField(
decoration: InputDecoration(
hintText: 'adddrss'
),
autofocus: true,
controller: _newMediaLinkAddressController,
),
SizedBox(height: 10),
],
),
));
Please note that:
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.vertical(top: Radius.circular(25.0))),
It's not required. It's just that I'm creating a rounded bottom sheet.
UPDATED
Flutter 2.2 breaks the changes again!” Now you need to give bottom padding once again so the keyboard doesn't overlap the bottomsheet.
Just add:
isScrollControlled: true to showModalBottomSheet
padding: MediaQuery.of(context).viewInsets to widget in builder
column/wrap both works
showModalBottomSheet<void>(
isScrollControlled: true,
context: context,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.only(
topLeft: Radius.circular(30.0),
topRight: Radius.circular(30.0)),
),
builder: (BuildContext context) {
return Padding(
padding: MediaQuery.of(context).viewInsets,
child: Container(
child: Wrap(
children: <Widget>[
TextField(
decoration: InputDecoration(
border: InputBorder.none,
hintText: 'Enter a search term'),
),
TextField(
decoration: InputDecoration(
border: InputBorder.none,
hintText: 'Enter a search term'),
),
TextField(
decoration: InputDecoration(
border: InputBorder.none,
hintText: 'Enter a search term'),
),
TextField(
decoration: InputDecoration(
border: InputBorder.none,
hintText: 'Enter a search term'),
)
],
)));
},
);
Update Feb 25 2020 better solution
showModalBottomSheet(
isScrollControlled: true,
builder: (BuildContext context) {
return SingleChildScrollView(
child: Container(
padding:
EdgeInsets.only(bottom: MediaQuery.of(context).viewInsets.bottom),
child: Padding(
padding: const EdgeInsets.fromLTRB(20.0, 20.0, 20.0, 0.0), // content padding
child: Form(...)) // From with TextField inside
});
In Order to focus on the Keyboard in BottomSheet - Wrap TextField in Padding Widget as like Below e.g Code:
showModalBottomSheet(
context: context,
builder: (context) {
return Container(
child: Padding(
padding: EdgeInsets.only(
bottom: MediaQuery.of(context).viewInsets.bottom),
child: TextField(
autofocus: true,
),
),
);
});
In the latest version of flutter, you can move your bottomSheet using isScrollControlled property/named parameter. Suppose i have a function(_showModal) which will invoke when a button is pressed. And i define the bottom sheet functionality on that function.
void _showModal() {
showModalBottomSheet(
isScrollControlled: true,
context: context,
builder: (BuildContext context) {
return Column(
children: <Widget>[
TextField(// your other code),
SizedBox(height: 5.0),
TextField(// your other code),
SizedBox(height: 5.0),
TextField(// your other code),
]
);
},
);
}
Here a ModalBottomSheet will appear but with fullscreen of height. And you don't need that height. So, you need to Column's mainAxisSize to min.
Column(
mainAxisSize: MainAxisSize.min,
// your other code
)
Fullscreen of height problem is solved, but ModalBottomSheet doesn't move to top when keyboard is appeared. Ok, to solve this issue you need to set viewInsets bottom padding to your ModalBottomSheet. So to set padding we need to wrap our Column with Container or Padding and then set the padding. The final code will look like this
void _showModal() {
showModalBottomSheet(
isScrollControlled: true,
context: context,
builder: (BuildContext context) {
return Container(
padding: EdgeInsets.only(
bottom: MediaQuery.of(context).viewInsets.bottom,
),
// You can wrap this Column with Padding of 8.0 for better design
child: Column(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
TextField(// your other code),
SizedBox(height: 5.0),
TextField(// your other code),
SizedBox(height: 5.0),
TextField(// your other code),
]
),
);
},
);
}
Hope your issue is fixed. Thank's 🙏
Package: https://pub.dev/packages/modal_bottom_sheet
Wrap your widget into Padding and set padding like this ==>
padding: MediaQuery.of(context).viewInsets // viewInsets will decorate your screen
You can use
showMaterialModalBottomSheet or showModalBottomSheet or showCupertinoModalBottomSheet
showModalBottomSheet(
context: context,
barrierColor: popupBackground,
isScrollControlled: true, // only work on showModalBottomSheet function
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.only(
topLeft: Radius.circular(borderRadiusMedium),
topRight: Radius.circular(borderRadiusMedium))),
builder: (context) => Padding(
padding: MediaQuery.of(context).viewInsets,
child: Container(
height: 400, //height or you can use Get.width-100 to set height
child: <Your Widget here>
),)),)
Try this
My Solution is
Use isScrollControlled: true
Add Padding
padding: EdgeInsets.only(bottom: MediaQuery.of(context).viewInsets.bottom)
Wrap your layout in SingleChildScrollView
SAMPLE CODE
Future<void> future = showModalBottomSheet(
context: context,
isDismissible: true,
isScrollControlled: true,
backgroundColor: Colors.white.withOpacity(0.2),
builder: (context) => SingleChildScrollView(
child: GestureDetector(
child: Padding(
padding: EdgeInsets.only(
bottom: MediaQuery.of(context).viewInsets.bottom
),
child: Container(
width: MediaQuery.of(context).size.width,
height: MediaQuery.of(context).size.height,
child: Column(
children: <Widget>[
// add your widget here
],
),
),
)
),
)
);
I got it fixed by increasing the height of the child widget when the keyboard gets opened.
initially value of MediaQuery.of(context).viewInsets.bottom will be 0 it will change when the keyboard gets focused.
showModalBottomSheet<void>(
enableDrag: true,
isScrollControlled: true,
context: context,
builder: (BuildContext context) {
return Card(
color: Colors.white,
child: Container(
height: MediaQuery.of(context).size.height / 2 +
MediaQuery.of(context).viewInsets.bottom,
child: Column(
children: <Widget>[
TextField(),
TextField(),
],
),
),
);
},
);
UPDATED 2021 May flutter 2.2!
Now you need to give bottom padding. The below written was a bug.
UPDATED 2020!
This answer is true, but you don't have to give bottom padding now!
Find and delete this line:
padding: MediaQuery.of(context).viewInsets
For people who can't solve their problem trying all the answers. These answers are correct but not so clear.
When using
MediaQuery.of(context).viewInsets.bottom)
make sure your context variable is using the one provided by bottom sheet builder property.
builder :(**c**)=>MediaQuery.of(**c**)
Try this.
showModalBottomSheet(
isScrollControlled: true,
context: context,
builder: (context) {
return AnimatedPadding(
padding: MediaQuery.of(context).viewInsets,
duration: const Duration(milliseconds: 100),
curve: Curves.decelerate,
child: Container(
child: Wrap(
children: [
TextField(
decoration: InputDecoration(labelText: "1"),
),
TextField(
decoration: InputDecoration(labelText: "2"),
),
TextField(
decoration: InputDecoration(labelText: "3"),
),
],
)));
},
)
Add this after the last widget of your bottom sheet
Padding(padding: EdgeInsets.only(bottom:MediaQuery.of(context).viewInsets.bottom))
You should to use this then,
showModalBottomSheet(
isScrollControlled: true,
context: context,
shape: RoundedRectangleBorder(
// <-- for border radius
borderRadius: BorderRadius.only(
topLeft: Radius.circular(10.0),
topRight: Radius.circular(10.0),
),
),
builder: (BuildContext context) {
return SingleChildScrollView(
padding:
EdgeInsets.only(bottom: MediaQuery.of(context).viewInsets.bottom),
child: drunkenWidget()...
//BTW, Never ever Drink
If you have full screen or fixed size showModalBottomSheet don't use padding it will not solve your problem. Use margin instead of padding like this :
showModalBottomSheet(
context: context,
builder: (context) {
return Container(
marign: EdgeInsets.only(
bottom: MediaQuery.of(context).viewInsets.bottom),
child: TextField()
);
});
Instead of using builder: (BuildContext context) { } in the builder, use builder: (context) { }
With this solution my modal bottom sheet sticks to the statusbar (acts like Scaffold with resizeToAvoidBottomInset: false) and allows to view all the form fields and scroll through the form if it is still needed to view bottom text fields.
For more details, here's the link from where I found the solution- https://github.com/flutter/flutter/issues/18564#issuecomment-602604778
showModalBottomSheet(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(15.0),
),
context: context,
isScrollControlled: true,
builder: (builder) {
return Container(
height: MediaQuery.of(context).size.height - 40,
padding: MediaQuery.of(context).viewInsets,
child: <Your Widget Here>,
);
},
);
After combining different solutions I got this:
if you don't want it to be Full screen and don't want to use the Padding workaround use
showModalBottomSheet(
context: context,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.vertical(top: Radius.circular(20)),
),
enableDrag: true,
isDismissible: true,
useRootNavigator: true,
builder: (BuildContext ctx) {
return Scaffold( // use CupertinoPageScaffold for iOS
backgroundColor: Colors.transparent,
resizeToAvoidBottomInset: true, // important
body: SingleChildScrollView(
child: Form(
child: Container(
child: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: <Widget>[
TextFormField(),
TextFormField(),
],
),
),
),
),
);
},
);
on Flutter (Channel master, v1.15.3-pre.37, on Mac OS X 10.15.2 19C57, locale en-US)
Fount this on github
Padding(
padding: EdgeInsets.only(bottom: MediaQuery.of(context).viewInsets.bottom),
child: TextField()
)
If you still have not found your issue. So I think you have missed in your BuilderContext. Sometimes when you implement modalBottomSheet it will give you only the context parameter. So add context with BuildContext.
builder: (BuildContext context) { //-Here is your issue add BuilderContext class name as it as
return Padding(
padding: MediaQuery.of(context).viewInsets,
child: SingleChildScrollView(
child: Padding(
padding: EdgeInsets.only(bottom: MediaQuery.of(context).viewInsets.bottom),
child: new Container(
Wrap the Form with a Scaffold widget, and then wrap the TextFormField with a SingleChildScrollView :
return Container(
height: screenHeight * .66,
child: Scaffold(
body: Form(
key: _form,
child: SingleChildScrollView(
child:TextFormField()
)
)
)
)
showModalBottomSheet(
isScrollControlled: true,
builder: (BuildContext context) {
return SingleChildScrollView(
child: Container(
padding:
EdgeInsets.only(bottom: MediaQuery.of(context).viewInsets.bottom),
child: Padding(
padding: const EdgeInsets.all(15.0), // content padding
child: Container())});
Note : This line does all the magic
Add this in your router link modal bottom sheet
showModalBottomSheet(
context: context,
isScrollControlled: true,
builder: (BuildContext context) {
return Messagescr();
}
);
And remove this line also in your Scaffold :
resizeToAvoidBottomInset : false,
Simple Solution, you can customize this :
Container(
margin: EdgeInsets.only(left: 15),
child: InkWell(
onTap: () {
showModalBottomSheet(
isScrollControlled : true,
context: context,
backgroundColor: Colors.transparent,
builder: (context) {
return Container(
padding: EdgeInsets.only(top: 15, left: 15, right: 15, bottom: 10),
width: double.infinity,
decoration: BoxDecoration(
color: AppTheme.leadItemColor1,
borderRadius: BorderRadius.only(topLeft: Radius.circular(12), topRight: Radius.circular(12)),
),
child: Column(
children: [
_assignTo(widget.viewModel, context),
SizedBox(height: 12,),
txtComment(widget.viewModel),
SizedBox(height: 12,),
CRMButton(
title: 'Select',
onTap: () async {
Navigator.pop(context);
await widget.viewModel.updateStatus(7, why: "${ConstantData.lostOptions[_selectedNumber]}");
},
)
],
),
);
},
);
},
child: CustomTabBarItem1(
image: widget.viewModel.leadDetail.success.lStatus == 7 ? 'assets/appimages/LeadDetail/icons-03-01.png' : 'assets/appimages/LeadDetail/icons-04-01.png',
bottomTitle: 'Lost',
topTitle: widget.viewModel.leadDetail.success.lStatus > 7 ? 'assets/appimages/LeadDetail/Ellipse 61#2x.png' : widget.viewModel.leadDetail.success.lStatus == 7 ? 'assets/appimages/LeadDetail/Group 486-1.png' : 'assets/appimages/LeadDetail/Ellipse-61#3x.png',
height : widget.viewModel.leadDetail.success.lStatus == 7 ? "0" : "1",
)),
),
import 'dart:async';
import 'dart:ui';
import 'package:flutter/foundation.dart';
import 'package:flutter/widgets.dart';
import 'package:flutter/material.dart';
import '../weight/boostrap/flutter_bootstrap.dart';
import '../weight/boostrap/bootstrap_widgets.dart';
/*
TextEditingController txtname = TextEditingController();
showModalBottomSheet(
context: context,
isScrollControlled: true,
shape: const RoundedRectangleBorder(
borderRadius: BorderRadius.only(
topLeft: Radius.circular(20),
topRight: Radius.circular(20),
),
),
builder: (context) => SingleChildScrollView(
padding: EdgeInsets.only(
bottom: MediaQuery.of(context).padding.bottom),
child: new AddItem(
tektk: 'Category',
tektd: 'Add',
txtname: txtname,
ismultik:false,
onPressed: () {}),
),
);
*/
class AddItem extends StatelessWidget {
const AddItem(
{Key? key,
required this.ismultik,
required this.tektd,
required this.tektk,
required this.txtname,
required this.onPressed})
: super(key: key);
final bool ismultik;
final String tektk;
final String tektd;
final VoidCallback? onPressed;
final TextEditingController txtname;
#override
Widget build(BuildContext context) {
final MediaQueryData mediaQueryData = MediaQuery.of(context);
bootstrapGridParameters(gutterSize: 10);
return Padding(
padding: mediaQueryData.viewInsets,
child: Container(
padding: EdgeInsets.only(bottom: 90.0, left: 10.0, right: 10.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
ListTile(
trailing: SizedBox.fromSize(
size: Size(35, 35),
child: ClipOval(
child: Material(
color: Colors.indigo,
child: InkWell(
splashColor: Colors.white,
onTap: () {
Navigator.pop(context);
},
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Icon(Icons.close, color: Colors.white),
],
),
),
),
),
),
),
BootstrapRow(height: 0, children: [
BootstrapCol(
sizes: 'col-md-12',
child: TextField(
style: TextStyle(color: Colors.black),
decoration: new InputDecoration(
border: new OutlineInputBorder(
borderSide: new BorderSide(color: Colors.white)),
labelText: tektk,
),
keyboardType: ismultik == true
? TextInputType.multiline
: TextInputType.text,
maxLines: null,
minLines: 1,
controller: txtname,
),
),
BootstrapCol(
sizes: 'col-md-12',
child: ElevatedButton(
style: ElevatedButton.styleFrom(
primary: Colors.green, // background
onPrimary: Colors.white, // foreground
),
onPressed: onPressed,
child: Text(tektd)),
),
]),
],
),
),
);
}
}
Just add
if (_isEditing) SizedBox(height: MediaQuery.of(context).viewInsets.bottom),
under the keyboard and hide all other content below the textfield with
if (!_isEditing) Widget(...),