Ho to fix Flutter NosuchmethodError?

I'm getting this error: NosuchmethodError: Class 'List' has no instance setter 'state='. Recevier: Instance(length:0) of ' _GrowableList' Tried calling: state=I...

Retrieval of Object Id from Microsoft AAD from Flutter App

I'm trying to retrieve the Object id of the logged-in user from the flutter app. I have retrieved accessToken using <a href="https://pub.dev/packages/aad_oauth"...

Flutter - NoSuchMethodError

I'm doing the example in Searchview flutter <a href="https://github.com/MageshPandian20/Flutter-SearchView" rel="nofollow noreferrer">https://github.com/MageshPandian...

Unhandled Exception: NoSuchMethodError: The method addAdvogado was called on null. On Flutter

I researched other similar questions with this error but I couldn't fix it. I don't know what I'm doing wrong. My application is not saving to the database when I try...

Unhandled Exception: NoSuchMethodError when onTap() is called

I'm new to flutter and have recently started working on my first flutter project. The idea is that when the user touches the button / image it should play a so...

Flutter: How to handle exception for image/file empty path?

<a href="https://i.stack.imgur.com/09eJJ.png" rel="nofollow noreferrer">enter image description here</a>My API call works when all the fields are not empty. <br/><br/>...

map_view = NoSuchMethodError flutter

After update flutter I have this error bellow, only when I erase app and release a new app. If I just hot reload I havn't this error and map is launch correctly. I'm c...

Flutter Charts NoSuchMethodError The getter length was called on null

I get the following error when I go to a page with charts in my Flutter app, then go to another page and then return to the page. Then the error is displayed. I cannot...

NoSuchMethodError was thrown while running. The method [] was called on null. Receiver: null. Tried calling: [](0). How to solve this error?

I'm developing a mobile application using Flutter-SQLite-Dart. This app is basically a quiz application. The app runs fine but initially when running a particular erro...

The method call was called on null. Receiver: null Tried calling: call(navegacion_bloques)

give me some of your time please, I have this error <strong>"mainMenu().onMenuTap()"</strong> and I don't know how to fix it. <strong>The following NoSuchMetho...

Flutter: NoSuchMethodError :The method fetchByID was called on null. Receiver: null Tried calling: fetchByID(2)

I'am new in Flutter, and this is my first project. I'am trying to navigate to the new site with parameters. The parameter is accepted but the function in my class noti...

No constructor MaterialApp. with matching arguments declared in class MaterialApp

I just created a new flutter project and started organized my folders, this is what I have for now: <a href="https://i.stack.imgur.com/uNb0i.png" rel="nofollow...

Short Error Screen when entering Camera Screen

I am relatively new to dart and created an app, that uses the camera. The whole App works fine, my only problem is that every time I enter the camera screen, I get an...

noSuchMethodError:The getter height was called on null ..the reciever :null

I just finished my coding based on udemy course....but a problem called noSuchMethodError:The getter height was called on null ..the reciever :null&q...

The method call was called on null

I am currently working on an app the takes datetime from user and stores it. I am using a callback that passes datetime from child to parent but keep getting the follo...