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Questions tagged [dropdownbutton]

DropDownButton is a flutter Widget that creates the Select-Option Menu

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How I can to change background color in Dropdown button in WPF ToolBar?

How I can to change background color in Dropdown button in WPF ToolBar? Update: XAML code:
Ejrr1085
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When I change dropdown button, it effects to the next one

When I add a new list element to my list and trying to change grade. This thing is not as effecting as I want. It is effecting the next item, probably it is an algorithm error. I hope you can understand the problem. I tried to add a variable for…
Altug
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I am trying to fetch data from the api and display it in a DropDownButton. problem is that snapshot is returning null

snapshot.hasData is returning null and the drop button never gets displayed. I am trying to fetch data from the api and display it in a dropdown button. the response.body is fetched correctly as it gets printed when i try to print it. But when I…
Ankit Singh
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how to apply css class on Button element inside the DropdownButton react-bootstrap?

I am using Dropdown button from react-bootstrap. I want to apply class on button element inside DropdownButton. It is applying to outer div if I pass className to DropdownButton. Instead it should get applied to button element. Below is the code I…
Vaibhav Jain
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Flutter how to change font color of DropDownButton

Im trying to change the font color of my DropdownButton in flutter right now its black and i want to change it to white is there any way to do this? Thank you for you time.
André Sousa
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How to give a constant width to a Flutter DropdownButton widget?

How can I give a constant width to a DropDownButton in a Flutter? As I got to know why they both DropDownButton as different width size in below image, as 1st one as the highest length of value "100%" in it & the 2nd one as highest value as "90%"…
Uday
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Flutter set state from dropdownbuttton not updating value

Hello i'am trying to update a DropdownButton in a alert dialog, but it seems to not update the selectedValue. Here is the code : class MyApp extends StatefulWidget { @override _MyAppState createState() => new _MyAppState(); } class _MyAppState…
Axel Masson
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DropDown Buttons in a side menu items

I've made a side menu with items but what I need now is to add another sub menu for each item. What should I do to accomplish that? class CustomListTitle extends StatelessWidget{ //.... Row( children: [ Icon(icon), …
Sarah Abouyassine
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How to change DropdownButton's selected index in Flutter

I want to change my DropdownButton selected index on page load, how can I do that? My DropdownButton is a list of PlateType objects and I need to change the selected index to some index that means old user selection. Following is my code: …
Mohsen Emami
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Centering the selected value of a DropdownButton

I am able to center the text items used in DropdownMenuItems provided to the DropDownButton, but how can the selected item be centered when the menu is closed?
AlanKley
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shinywidget dropdownButton CSS tag

I'm using the dropdownButton widget but i'm struggling with the css. I have tried this: dropdownButton(inputId = "MyDropDownB1", tags$div(style = "background-color: #393D3F !important;", checkboxGroupInput(...) ), circle…
Roberto
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Flutter - DrowpdownMunu Items not populating from List

I'm stuck with a DrowdownButton that is not populating any data. It's populating from a list passed from the previous screen. My debug indicates that the list has data that can be parsed. The output just produces an empty DropdownButton. import…
Duncan Pullen
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How to enable a button in Flutter,when dropdownbutton has value?

colleagues ! I'm noob in Flutter.This is my first app,and I'm trying to enable the button only when the user chooses a value from the dropdownbutton. I was trying to find a similar question,but didn't find. class Reserve extends StatefulWidget { …
Bojke
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How to fix the list size in drop down button to a number and make it scrollable in flutter?

I want only 3 items to be visible at a time so that the entire screen doesn't get covered but the options can be even 20. Rest of the options should be visible on scrolling. I am able to scroll but the size of list is covering entire screen.
Keerti Purswani
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Disable elements when Shiny is busy

I'm using a piece of javascript from this question: SO It works for buttons, but I would also like to disable things like sliderInput, selectInput and textInput as well. I tried to replace the 'button' with 'input' which does disable the textinput…
Mark
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