Hi I have a dropdown button whose hint and selected value text is cut off when too long:
It should be displaying "Department Code / Department Number"
Code:
DropdownButton<String> dropdownList(BuildContext context) {
return new DropdownButton<String>(
hint: new Text(
"Department Code / Department Number",
),
value: selectedDept,
isDense: true,
onChanged: (String newValue) {
//...
},
items: _item.map((Dept map) {
return new DropdownMenuItem<String>(
value: map.code,
child:
new Text(map.code, style: new TextStyle(color: Colors.black)),
);
}).toList(),
isExpanded: true,
);
}
Widget build(BuildContext context) {
return Scaffold(
child: Column(
children: <Widget>[
Container(
padding: EdgeInsets.fromLTRB(
20, 20, 10, 20),
decoration: ShapeDecoration(
shape: RoundedRectangleBorder(
side: BorderSide(
width: 1.0,
style: BorderStyle.solid,
color: Colors.grey[400]),
borderRadius:
BorderRadius.all(
Radius.circular(
15.0)),
),
),
child:
DropdownButtonHideUnderline(
child: dropdownList(
context)),
)
]
)
)
}
Any idea how to fix the display?
If you dont want to increase the size of the dropdown, Change the content padding to something that suits you.
DropdownButtonFormField(
itemHeight: 50,
decoration: InputDecoration(
contentPadding:
EdgeInsets.symmetric(vertical: 5, horizontal: 10),
.
.
.
Theres usually a default value for contentPadding which is cutting up your text.
To access input decoration you'll need to use DropdownButtonFromField
In the Container(), add in BoxConstraints and specify minHeight and maxHeight
constraints: new BoxConstraints(
minHeight: 50.0,
maxHeight: 70.0,
)
Just add padding to make space between your inner content.
return DropdownMenuItem<String>(
value: value,
child: Padding(
padding: EdgeInsets.all(4),
child: Text(map.code, style: new TextStyle(color: Colors.black)),
),
);
Related
I want to achieve a result like this where my dropdown button has very less padding.
This is what I currently have
so far I have tried adjusting height of dropDownButton, wrapping with a container, assigning padding but nothing works
here's my code
Container(
child: Center(
child: DropdownButtonHideUnderline(
child: ButtonTheme(
alignedDropdown: true,
child: DropdownButton<String>(
dropdownColor: AppColors().white,
value: value,
style: TextStyles().medium12,
icon: Icon(
Icons.keyboard_arrow_down,
color: AppColors().green,
),
onChanged: (newValue) {
setState(() {
value = newValue!;
});
},
items: <String>[
AppStrings().getString().english_language,
AppStrings().getString().arabic_language,
AppStrings().getString().urdu_language,
].map<DropdownMenuItem<String>>((String value) {
return DropdownMenuItem<String>(
value: value,
child: Text(
value,
),
);
}).toList(),
),
),
),
),
padding: EdgeInsets.only(
left: 10.w,
right: 10.w,
),
decoration: BoxDecoration(
border: Border.all(color: AppColors().green, width: 6.w),
borderRadius: BorderRadius.all(
Radius.circular(25.r) // <--- border radius here
),
),
);
can someone please help me? thankyou so much
just set dropdownbutton isDense: true
I am using flutter DropdownButton for list out something and it worked well while selecting an option from the list the drop-down list appears full screen, I need to give some padding so that the user can cancel the list(hide).
The code:
ListView(children: <Widget>[
....
Container(
padding: EdgeInsets.all(5.0),
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(5.0),
border: Border.all(
color: Colors.grey,
style: BorderStyle.solid,
width: 0.80),
),
alignment: Alignment.center,
child: DropdownButtonHideUnderline(
child: DropdownButton(
isExpanded: true,
hint: Text('Select Your Height'),
icon: Icon(Icons.arrow_downward),
iconSize: 20,
iconEnabledColor: AppColors.PRIMARY_COLOR,
items: _heights.map((dropDownHieghtItem) {
return DropdownMenuItem(
value:
dropDownHieghtItem['height_id'].toString(),
child: Text(dropDownHieghtItem['height_name']));
}).toList(),
onChanged: (String newselectedHieght) {
setState(() {
heightID = newselectedHieght.toString();
});
},
value: heightID)),
),......
])
instead of using Text widget inside DropdownMenuItem use Container and add custom TextStyle
like this:
_heights.map((dropDownHieghtItem) {
return DropdownMenuItem(
value:
dropDownHieghtItem['height_id'].toString(),
child: Container(
alignment: Alignment.center,
child: Text(dropDownHieghtItem['height_name'],style: TextStyle(fontSize: 20,color: Colors.red),textAlign: TextAlign.center,)
)
);
}).toList(),
I am trying to build my own drop down button with separated and condensed menu items, like the image below:
here's the code I have tried so far, I got the drop down width to match the container but the items can't be customized so far and always the height starts from above the button and is not occupying the width of the container:
body: Container(
margin: EdgeInsets.symmetric(horizontal: 10.0, vertical: 5.0),
child: Container(
width: double.infinity,
decoration: BoxDecoration(
borderRadius: BorderRadius.all(Radius.circular(10.0)),
border: Border.all(color: Colors.brown, width: 1.0)),
padding: EdgeInsets.fromLTRB(10.0, 5.0, 10.0, 5.0),
child: DropdownButtonHideUnderline(
child: ButtonTheme(
alignedDropdown: true,
child: DropdownButton(
isExpanded: true,
isDense: true,
value: selection,
icon: Icon(
Icons.arrow_drop_down,
color: Colors.brown,
),
iconSize: 40,
underline: Container(
height: 1,
color: Colors.transparent,
),
onChanged: (String val) => setState(() => selection = val),
items: settingsOptions.map((option) {
return DropdownMenuItem(
value: option,
child: Text(option),
);
}).toList(),
),
),
)
),
),
This is the output from the code:
How do I customize the items width, height and add dividers like in the first image? Thanks
This is an example modify as you like !
DropdownButton(
isExpanded: true,
isDense: true,
value: selection,
icon: Icon(
Icons.arrow_drop_down,
color: Colors.brown,
),
iconSize: 40,
underline: Container(
height: 1,
color: Colors.transparent,
),
onChanged: (String val) => setState(() => selection = val),
items: sampleList.map((option) {
return DropdownMenuItem(
value: option,
child: Container(
width:double.infinity,
alignment:Alignment.centerLeft,
padding: const EdgeInsets.fromLTRB(0,8.0,0,6.0),
child:Text(option),
decoration:BoxDecoration(
border:Border(top:BorderSide(color:Colors.grey,width:1))
)
),
);
}).toList(),
selectedItemBuilder:(con){
return sampleList.map((m){
return Text(m,);
}).toList();
}
)
I came across a flutter Library called dropdown_below in pub.dev. It has additional methods that can allow you customize dropdownMenuItem to your preferred layout.
DropdownBelow(
value: category,
// isDense: true,
itemWidth: MediaQuery.of(context).size.width * 0.92,
itemTextstyle: TextStyle(
fontSize: 14,
fontWeight: FontWeight.w400,
color: Colors.black),
boxTextstyle: TextStyle(
fontSize: 14,
fontWeight: FontWeight.w400,
color: Colors.grey.shade600),
boxPadding: EdgeInsets.fromLTRB(13, 12, 0, 12),
boxWidth: MediaQuery.of(context).size.width,
boxHeight: 60,
hint: Text('choose video'),
items: video.data.value.videos
.map((e) => DropdownMenuItem(
onTap: () => e.title,
value: e.title ?? category,
child: Container(
width: double.infinity,
decoration: BoxDecoration(),
child: Padding(
padding: const EdgeInsets.all(8.0),
child: Text(
e.title ?? '$category',
overflow: TextOverflow.ellipsis,
),
),
),
))
.toList(),
onChanged: (video) {
context.read(videoProvider).cateroryOnChange(video);
},
),
Library Link: https://pub.dev/packages/dropdown_below
The problem with the DropdownButton is that the menu will open randomly based on the selected index and other things. Also, You can't edit its code by just trying to pass offset as the logic code of the paint work based on that and trying to hardcode the selectedItemOffset to a value won't work perfectly fine.
So use DropDownButton2 , which is built just over this .
Package: DropDownButton2
Credits: Ahmed Elsayed
For reference: Refer this link
How can we change the width/padding of a Flutter DropdownMenuItem in a Dropdown?
Row(
children: <Widget>[
Expanded(
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
LightText(
text: "Agent",
),
Padding(
padding: EdgeInsets.only(top: 3),
),
Container(
height: 27,
child: Row(
children: <Widget>[
DropdownButtonHideUnderline(
child: DropdownButton<Agent>(
// isExpanded: true,
hint: Text(
agentName == null ? "" : agentName,
style: TextStyle(
fontSize: MediaQuery.of(context).size.width * 0.035,
),
),
value: selectedAgent,
onChanged: (Agent value) async {
selectedAgent = value;
agentName = selectedAgent.getAgentName();
agentId = selectedAgent.getAgentId();
},
items: agentList.map((Agent agent) {
return DropdownMenuItem<Agent>(
value: agent,
child: SizedBox(
width: 25.0,
child: LightText(
text: agent.name,
textColor: Colors.black,
),
),
);
}).toList(),
),
),
],
),
decoration: ShapeDecoration(
shape: RoundedRectangleBorder(
side: BorderSide(width: 1.0, color: lightGrey),
borderRadius: BorderRadius.all(Radius.circular(3.0)),
),
),
),
],
),
),
SizedBox(
width: 30,
),
TextBoxData(
labelText: "% Commission",
controllerText: percentageCommision,
enableVal: true,
borderColor: lightGrey,
)
],
)
Wrap Dropdown button with ButtonTheme and add alignedDropdown = true like:
ButtonTheme(
alignedDropdown: true,
child: DropdownButton(...),
)
alignedDropdown will match the menu items' width with buttons. Then we need specific width, so wrap ButtonTheme with SizedBox or Container:
SizedBox(
width: 25, // Your width for dropdowns
child: ButtonTheme(...),
)
You can control the width/padding of a Flutter DropdownMenuItems in a DropdownButton by wrapping it inside a Container widget.
Then simply assign height, width and padding to that Container widget.
Example is given below:
Widget dropDownButtonsColumn(List<String> list, String hint){
return Padding(
padding: const EdgeInsets.only(left: 40, right: 40 , bottom: 24,top:12),
child: Container(
height: 55, //gives the height of the dropdown button
width: MediaQuery.of(context).size.width, //gives the width of the dropdown button
decoration: BoxDecoration(
borderRadius: BorderRadius.all(Radius.circular(3)),
color: Color(0xFFF2F2F2)
),
// padding: const EdgeInsets.symmetric(horizontal: 13), //you can include padding to control the menu items
child: Theme(
data: Theme.of(context).copyWith(
canvasColor: Colors.yellowAccent, // background color for the dropdown items
buttonTheme: ButtonTheme.of(context).copyWith(
alignedDropdown: true, //If false (the default), then the dropdown's menu will be wider than its button.
)
),
child: DropdownButtonHideUnderline( // to hide the default underline of the dropdown button
child: DropdownButton<String>(
iconEnabledColor: Color(0xFF595959), // icon color of the dropdown button
items: list.map((String value){
return DropdownMenuItem<String>(
value: value,
child: Text(value,
style: TextStyle(
fontSize: 15
),
),
);
}).toList(),
hint: Text(hint,style: TextStyle(color: Color(0xFF8B8B8B),fontSize: 15),), // setting hint
onChanged: (String value){
setState(() {
bankSelected = value; // saving the selected value
});
},
value: bankSelected, // displaying the selected value
),
)
),
),
);
}
Outputs:
With horizontal padding 50, given inside the Container widget:
Hope this helps!!
I have a Row that has 3 fields in it: 2 TextFields, 1 DropdownButtonHideUnderline wrapped in a Container. I'm trying to ensure that the first TextField takes up about 50-60% and the other two fields share the remaining space. I also want the fields to have the same height. So, something like this:
This is the code I have:
#override
Widget build(BuildContext context) {
return Container(
color: Theme.of(context).accentColor,
child: Padding(
padding: const EdgeInsets.fromLTRB(5.0, 10.0, 5.0, 10.0),
child: Row(children: <Widget>[
Expanded(
child: Container(
padding: EdgeInsets.only(right: 5.0),
child: TypeAheadField(
textFieldConfiguration: TextFieldConfiguration(
autofocus: true,
controller: widget.ingredientController,
style: DefaultTextStyle.of(context)
.style
.copyWith(fontStyle: FontStyle.italic),
decoration: InputDecoration(
border: InputBorder.none,
filled: true,
fillColor: Colors.white.withOpacity(1),
hintText: 'Ingredient',
suffixIcon: GestureDetector(
onTap: widget.addFunction,
child: Icon(
Icons.add,
color: Colors.grey,
)))),
suggestionsCallback: (pattern) async {
return await _findIngredients(pattern);
},
//If not items are found, return an empty container.
noItemsFoundBuilder: (context) {
return Container(height: 0, width: 0);
},
itemBuilder: (context, suggestion) {
return ListTile(
title: Text(suggestion.name),
);
},
onSuggestionSelected: (Ingredient suggestion) {
widget.ingredientController.text = suggestion.name;
},
))),
Expanded(
child: TextField(
maxLines: 1,
controller: widget.quantityController,
keyboardType: TextInputType.text,
autofocus: false,
decoration: InputDecoration(
border: InputBorder.none,
filled: true,
fillColor: Colors.white.withOpacity(1),
hintText: 'Qty',
))),
Expanded(flex: 1, child: UnitDropdown()),
])));
}
What I'm left with is this:
I've tried setting the flex factor on the Expanded to different things, but that just results in an overflow on the right side. I've also not found a way to force all of the widgets to have the same height.
Try this one,
Row(children : <Widget>[
Expanded(
Container(child: TextField1())
),
Expanded(
Row(children : <Widget>[
Expanded(child: TextFiled2()),
Expanded(child: DropDown())
]);
)
]);
Or else, You can use MediaQuery to get the exact size of the screen.
Example:
Width : MediaQuery.of(context).size.width * 0.5;
Width : MediaQuery.of(context).size.width * 0.25;
Width : MediaQuery.of(context).size.width * 0.25;
Here you have, the key is to encapsulate the TextField, Dropdown, or whatever component you have in a Container, and define the actual size from the Container, tweaking the predefined internal Paddings of each widget (if you have the chance, sometimes is not available).
double itemsHeight = 30;
Widget getTextField({String hint = 'Ingredients', Widget suffix}) {
// use Container to define the size of the child,
// and reset the original inner paddings!
return Container(
height: itemsHeight,
child: TextField(
decoration: InputDecoration(
border: OutlineInputBorder(
borderRadius: BorderRadius.zero,
borderSide: BorderSide(color: Colors.white, width: 1)),
hintText: hint,
contentPadding: EdgeInsets.all(
0), // change each value, and set 0 remainding ones.
suffixIcon: suffix,
),
expands: false,
maxLines: 1,
controller: TextEditingController(),
),
);
}
return Scaffold(
body: Container(
color: Colors.green.withOpacity(.2),
margin: EdgeInsets.symmetric(vertical: 50, horizontal: 20),
child: Row(
mainAxisSize: MainAxisSize.max,
children: <Widget>[
Flexible(
flex: 2,
child: getTextField(
hint: 'Ingredients',
suffix: Icon(
Icons.add,
size:
18, // option 1: reduce the size of the icon, and avoid the padding issues..
)),
),
Flexible(
flex: 1,
child: getTextField(
hint: 'Qty',
// option2: trick to match the expanded height of the icon on the previous field
// make an icon transparent :)
suffix: Icon(
Icons.account_box,
color: Colors.transparent,
)),
),
Flexible(
flex: 1,
child: Container(
// use this to match the Flex size..., is like using Expanded.
width: double.infinity,
// container defines the BoxConstrains of the children
decoration: BoxDecoration(
color: Colors.white24,
border: Border.all(color: Colors.white, width: 1),
),
height: itemsHeight,
child: DropdownButton(
hint: Text("Unit"),
onChanged: (i) {},
underline: Container(),
items: List.generate(5, (i) {
return DropdownMenuItem(child: Text("item $i"));
})),
),
),
],
),
),
);
screenshot of result: