False type when returning data from future because of parsing nested structure with list

I am new to flutter and have experiences only with PHP, therefore you may find my questions nonsensical. If so, please do explain me what I am getting wrong, thank you...

Error with my FutureBuilder and dropdown button

I have a problem with my DropdownButton. I take values from a json file and the problem is that when I try to select a value from dropdownbutton I have an error that s...

Flutter iOS App stuck or fails? What to Do?

What to do when the Flutter app gets stuck on launching or installing dependencies or it fails out of the blue. I have noticed this issue coming up more and more in iO...

How to solve this error: The method [] was called on null. Receiver: null Tried calling: [](name)

Basically, I want to display info admin in the section drawer. So I user <code>StreamBuilder</code>. Then I got an error inline <code>StreamBuilder&lt;DocumentS...

Update forms in FutureBuilder

I want to be able to update my forms in a futureBuilder. I need the futureBuilder to retrieve all the datas from the player in my DataBase. I am setting my initial val...

Firebase_database plugin for flutter is not working (resolve android.arch.core:common:1.1.1.)

I am new to flutter development. I want to use the firebase database. I was able to connect to firebase using the firebase analytics plugin but I was not successful in...

how to create instances of StreamBuilder&lt;UserModel&gt;

I have this part in my code that I want to repeat throughout the project and I wish to just be able to call this function elsewhere, but the problem is that you need t...

Flutter Error when building: Invalid &lt;color&gt; for given resource value

I wanted to change the App icon with the <code>flutter_launcher_icons</code> package but after I did <code>flutter run</code> I get the following error even though I n...

Trigger rebuild of other widgets after FutureBuilder finishes

I have a page with two main widgets: a futurebuilder that contains a list of elements taken from an api and an appbar. The appbar content (a row of days) is grayed out...

Can a Flutter Plugin have its own Bundle ID in iOS?

I'm trying to create a plugin for a flutter app that manages its own keychain. Default keychain access is managed by the <code>teamName + bundleID</code> as per <a hre...

Flutter build Xcode project issue:Class AMSupportURLConnectionDelegate is implemented in both

I have set up the environment of Flutter,then i executed command <strong>flutter build ios</strong> in terminal,the building is successful!But building with Jenkins is...

Bloc pattern does not show newly added user to sqflite on screen

I am using <code>sqflite</code> database to save user list. I have user list screen, which shows list of user and it has a fab button, on click of fab button, user is...

StreamBuild: stream, calling a method that returns a Firestore Stream does not retrieve data until update

I'm hoping that someone can explain why there is different in behavior when explicitly calling <em>Firestore.instance.collection('data').snapshots()</em> vs calling a...

How to call 2 Future functions that return Future values in FutureBuilder?

I am working on a complex web application in which from time to time, I need to fetch data from backend API. Sometimes, I need to call 2 future functions in Future Bui...

Flutter &amp; Firebase: How to check if an item exists inside of an array within a Firebase document

<a href="https://i.stack.imgur.com/2aL80.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/2aL80.png" alt="img_firebase" /></a> I'm trying to w...