Flutter Tutorial - DropdownButton - Single & Multiple Data

Create a DropdownButton with your individual style for your Flutter applications.


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[enverite]

Thanks for sharing your knoledge.
How can we send the value selected by the user of the dropdown buton to Firebasse collection?
Thanks if you can answer.

[devilsemi]

damn, I am addicted to your videos. I always seek your videos on the topics/widgets I am stuck. Good going you are going to become famous.

[juhisravani]

Hi 👋. How to put search option in drop-down items to search. Please tell me any suggestions

[surujmiah]

very good video this.
thank you bother.

[alexyan]

thank you sir, do yo have multi level dropdown tutorial?

[tobiasmiklavcic]

Hi Johannes, in HTML it is usual to show "descriptions" of items but send values. For example:
<select name="cars" id="cars">
<option value="volvo">Volvo</option>
<option value="saab">Saab</option>
<option
<option value="audi">Audi</option>
</select>
My questions is: how can I show for example "Firstname Lastname" but sending "User-ID"?
And if I save User-ID to Firebase, how can I return User-ID from Firebase as selected but show "Firstname Lastname" ... because visitor must not know/see User-ID, only "Firstname Lastname".
My solutions is to use two lists: one with NAMES and one with IDs. If user selects NAME i use indexOf() to send/get correspondending User-ID.
Do you have a smarter solution?

[aytunch]

How can we get the same border radius and orange border when the dropdown menu is in the open state?

[viralgohil]

hello sir how to validate a dropdown button

[scalechords]

When i select a new item the new selected item does replace the first item for some reason. it stays on the first item each time i select a new item

[timeanew]

Hey Johannes, any idea about: ```"There should be exactly one item with
[DropdownButton]'s value: Instance of 'Market'. \nEither
zero
or 2 or more [DropdownMenuItem]s were detected with the
same value"
```

[ismailhossain]

In my case. I have list of map.
{Id: 1
Name: apple},
{Id: 2
Name Orange}, etc...

Once apple chosen i want to set 2 values,
Let say i choose apple from dropdown. I want set values as follows:
ItemID = 1
ItemName = apple


Anybody can explain? Is this even possible? :)

[EusebiVidal]

Hi!!! How would you do it: if after selecting a user from the dropdown, you had to load below (same screen) the information of the selected user?

onChanged: (String value) { showStakeholders(context, value); },

showStakeholders(context, value) {
...
...REST API...
var users = json.decode(body['users']);

/* Here I get the user information.
I want to show it on the screen (I don't want to show it in a dialog) */
...

}

Thanks!!!