flutter_downloader | Flutter Downloader - A plugin for creating and managing download tasks NO MAINTAINER | Plugin library

I am getting this error while running my flutter app.The app launches on chrome but wont launch on the emulator or on a real mobile device

My Flutter app allows user to access a webpage which requires authentication via Flutter InAppWebView. The webpage allows authenticated user to download a PDF file so I handle the download using the FlutterDownloader in the onDownloadStart event of InAppWebView.

When I try to download the file after logging onto the webpage, the app downloads the Index page of the website instead of the PDF file. Checking the debug logs reveals that the URL was redirected to the login URL:

Can anyone please tell me that how can I save images in the gallery for an offline purpose from the API in flutter? I use flutter_downloader and dio for that but can't get success.

Adding flutter_downloader: ^1.6.1 in the pubspec. gives the following error

I'm new to flutter/iOS.

I'm using:

Flutter 1.22.6 • channel stable • https://github.com/flutter/flutter.git Framework • revision 9b2d32b605 • 2021-01-22 14:36:39 -0800 Engine • revision 2f0af37152 Tools • Dart 2.10.5 flutter_downloader: ^1.4.4

I have to correct an application that I did not code I'm trying to understand it. It downloads a pdf file and open it, but is not working in iOS.

All the configuration that I read in https://github.com/fluttercommunity/flutter_downloader is correct.

Flutter doctor is OK.

Below I show you parts of the code

main.dart

I'm using stripe payment gateway in my app everything works fine when i enter card details after that it redirect to the OTP page after enter otp and submit it throws this error

This problem occurs only in live mode, in test mode debit card won't ask for OTP

So , My flutter App doesn't show content that is fetched through an API unless some button is pressed then it shows only, I don't know what the problem is here but it is quite annoying, I don't know what is causing hence below is my entire code, I am new to flutter so sorry if it is some stupid mistake. Thank you.

I am trying to make a wallpaper app to download images but it shows download failed when it completes download with error Couldn't find meta-data for provider with authority. I am downloading with flutter-downloader package. Thanks.

java.lang.IllegalArgumentException: Couldn't find meta-data for provider with authority sagarrawatuk.fotoApp.flutter_downloader.provider

I'm developing my first flutter APP, however i'm really newbie such on firebase and in flutter.

my app is already authenticating on firebase through email and password, but I only know how to display the db collection to all the users,I would like to display the specific data of the logged user.

for now Im getting this error

Class 'DocumentSnapshot' has no instance getter 'documents'. Receiver: Instance of 'DocumentSnapshot' Tried calling: documents

but when i call documents its shows a new error: The method 'documents' isn't defined for the type 'CollectionReference'. Try correcting the name to the name of an existing method, or defining a method named 'documents'.

MY signIn CODE