ImagePicker | 图片选择器 | Computer Vision library

I'm trying to make a profile page where user can upload their profile picture. I have done all the required method but this error pops up: Unhandled Exception: MissingPluginException(No implementation found for method requestPermissions on channel flutter.baseflow.com/permissions/methods)

a tab should pop up when I press on the IconButton asking for permission, but in here nothing happens just the above error pops up.

This is the code I did:

I'm trying to use a SimpleDialog to select an image from Gallery or Camera but I'm getting the run error type 'SimpleDialog' is not a subtype of type '(() => void)?' This is my function to call the dialog box

I use the following to check for the top most view controller. I need to check if the top view controller is an ImagePickerController

I'm using the function below to upload images on zendesk. Zendesk requires image to be in binary to be uploaded and getting the blob image method is working when I'm uploading on Firebase. These function gets a response 201 but when you check the image, is just a white square. I think image got corrupted during the upload.

imageUri is returned from expo-image-picker like this below:

file:/data/user/0/host.exp.exponent/cache/ExperienceData/.../ImagePicker/8543faa5-b996-46cd-9554-ce9afb61385b.jpg

I tried as much as possible to shorten the code and explanation in order not to waste your time,

Firstly, everything works just fine ... where At the front end, the Photo picker works and has been tried successfully. In the backend, post API is running and tested by Postman by uploading files from data and it gives me 200 status code

But the problem comes here when I post the image, but with React Native Android emulator, this error appears

The log in backend terminal is "Error: Multipart: Boundary not found"

Here is the Code,

I'm trying to pick multiple images at once using the image_picker 0.7.5+3 package so my code is simple , just one line to open the gallery to select from it

hello i want to add a new container which contains a textediting and an image on button pressed but it doesnt not work, while on initstate a fixed container is shown her is my code

While I know this may look like a duplicate with how many different posts there are about this error but I am getting this error for (which I assume) are different reasons on four different screens.

My app launches but I end up getting the Red screen error whenever I try to navigate my app because it says a widget within the screen used a Null Check operator on a null value.

Here are the errors I've gotten:

The following _CastError was thrown building NotificationBanner(dirty): Null check operator used on a null value. The relevant error-causing widget was: NotificationBanner file:///Users/alexm/carebloom-flutter/lib/Views/homeview.dart:9:7

The following _CastError was thrown building AlertBanner(dirty): Null check operator used on a null value. The relevant error-causing widget was: AlertBanner file:///Users/alexm/carebloom-flutter/lib/Views/alerts_view.dart:57:15

The following _CastError was thrown building MessageOverView(dirty): Null check operator used on a null value. The relevant error-causing widget was: MessageOverView file:///Users/alexm/carebloom-flutter/lib/widgets/navbar.dart:41:16

This one is a little different

The following _CastError was thrown building SettingsView(dirty, dependencies: [_EffectiveTickerMode], state: _SettingsViewState#ddb1e(tickers: tracking 1 ticker)): Null check operator used on a null value. The relevant error-causing widget was: SettingsView file:///Users/alexm/carebloom-flutter/lib/widgets/navbar.dart:49:16

Now I assume that the errors lie within the whatever widget came back as WidgetName(dirty). SO the code for each of those is below. However I'd like to also ask some questions on top of all this just to better my understanding and help me diagnose issues in the future. When it has WidgetName(dirty) what exactly does that mean what is (dity)? Besides the error message showing a specific widget it also gives 'The relevant error-causing widget path, is that the one I should be looking at?

NotificationBanner:

i m working on a mobile app that takes a picture and then renders it in a different screen, i m able to do so but the thing is when i call the image picker to take the image and then pass it to another screen i get the first screen where i have my button showing for about a second before it navigates to second screen, how can i prevent that , here is ly code :