I am getting error while compiling flutter app
Anyone can help?
Here is full error :
/C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/carousel_slider-4.2.0/lib/carousel_slider.dart:311:29: Error: Member not found: 'trackpad'.
PointerDeviceKind.trackpad
Here are dependencies from yaml file
`
version: 1.0.0+1
environment:
sdk: ">=2.16.2 <3.0.0"
dependencies:
flutter:
sdk: flutter
# The following adds the Cupertino Icons font to your application.
# Use with the CupertinoIcons class for iOS style icons.
cupertino_icons: ^1.0.2
carousel_slider: ^4.2.0
video_player:
`
Welcome Rohan!
This issue is because of the introduction of the new trackpad gestures in version 3.3.0-0.0.pre of flutter as documented here: https://docs.flutter.dev/release/breaking-changes/trackpad-gestures looks like carousel_slider has been update to use it.
You have two options:
Upgrade your flutter SDK to 3.3.0-0.0.pre or greater
Or downgrade carousel_slider: 4.1.0
Clean pub cache folder by command bellow
flutter pub cache repair
And download all dependencies by following command in your project directory
flutter pub cache repair
IMPORTANT
All libraries will be downloaded from the internet from the scratch and this will take some time depends how many libraries are you using
you should declare carousel_slider: 4.1.1 in pubspec.yaml
instead of carousel_slider: ^4.1.1 because with ^ sign flutter will try to use latest version in pub.dev
** flutter/.pub-cache/hosted/pub.dartlang.org/firebase_core-1.24.0/lib/src/firebase_app.dart:18:25: Error: Member not found: 'FirebaseAppPlatform.verifyExtends'.
FirebaseAppPlatform.verifyExtends(_delegate);
I used
.
.
.
firebase_core: ^1.7.0....I cheked in my code but there is not show any error shoud i change in my library file of firebase_core:1.24.0 ***
I have encountered the same issue and i fixed by:
Updating the packages in pubspec.yaml file to the latest versions:
firebase_core: ^2.1.1
firebase_auth: ^4.1.0
cloud_firestore: ^4.0.3
Removing the pubspec.lock file
Running flutter clean
And last running this command flutter pub get
Because there are some breaking change of firebase_core_platform_interface that do not comply with semantic versioning: https://github.com/firebase/flutterfire/issues/9806
You need to overwrite this library:enter image description here
I had tried everything like adding dependencies but VS Code don't show that package is downloaded.
I'm unable to use import 'package:flutter_svg/flutter_svg.dart';
You can change indent of flutter_svg in pubspec.yaml
from
flutter:
sdk: flutter
flutter_svg: ^0.19.0
to
flutter:
sdk: flutter
flutter_svg: ^0.19.0
Maybe if you run flutter pub get in the terminal, then flutter clean then restart your vs code it should work
We are working on Flutter v1.7.8+hotfix.4, using VS Code added a new package called english_words. the package is updated with all required files in the app but SDK, not updated flutter/packages, here we are unable to see the package folder.
Due to the above issues getting an error from main.dart file
Target of URI doesn't exist 'package:english_words/english_words.dart'.
pubspec.yaml
dependencies:
flutter_test:
sdk: flutter
english_words: ^3.1.5
run flutter packages get got response exit code 0
run flutter pub get or pub get no error.
reload/rebuild the app using flutter run but packages not updated.
pubspec.yaml, pubspec.lock, .packages updated fine.
tried from VS Code Tool click get Packages not solved.
Check if you have this in your pubsec.yaml file
dependencies:
flutter:
sdk: flutter
english_words: ^3.1.5
In you code there is dev_dependencies. Replace this dependency
I keep getting
Running "flutter packages get" in flutter_sportters...
Error on line 6, column 5 of pubspec.yaml: A dependency may only have one source.
sdk: flutter
^^^^^^^^^^^^^
When I run my app or Packages Get.
It worked perfectly fine before. Have no idea how to fix this.
Consider you are going to use this package "shared_preferences".
You will get this error in pubspec.yaml. If you did like below.
dependencies:
flutter:
sdk: flutter
shared_preferences: v0.4.2
Indention is important you are accidentally adding shared_preference package below flutter dependency. So the error "A dependency may only have one source"
Correct format below:
dependencies:
flutter:
sdk: flutter
shared_preferences: v0.4.2 #no indention
It throws an error because of Indention. It is important to maintain Indention while adding a dependency in flutter.
Before :
dependencies:
flutter:
sdk: flutter
cupertino_icons: ^0.1.2
english_words: ^3.1.0
After :
dependencies:
flutter:
sdk: flutter
cupertino_icons: ^0.1.2
english_words: ^3.1.0
Hope this will solve your error.
Happy coding!!!
Indentation !!!
Being newbees making silly mistakes. I have written the new dependency inside the flutter root as :
dependencies:
flutter:
sdk: flutter
sqflite:
Instead of
dependencies:
flutter:
sdk: flutter
sqflite:
Comment when you see the difference!!
I was trying to add assets folder to my project. I added it under dependencies which caused the error:
dependencies:
flutter:
sdk: flutter
assets:
- images/
It's not to be added under dependencies. Instead, add it under flutter:
flutter:
uses-material-design: true
assets:
- images/
You can define just like that in pubspec.yaml file
dependencies:
flutter:
sdk: flutter
image_picker: 0.4.1
and flutter packages get you can call via terminal or if you are using Android Studio than options availbale above when you edit pubspec.yaml file.
In terminal go to your project directory and then enter flutter packages get
I solve My problem:
Here my first Code
dependencies
flutter:
sdk: flutter
webfeed: ^0.4.2
# The following adds the Cupertino Icons font to your application.
# Use with the CupertinoIcons class for iOS style icons.
cupertino_icons: ^0.1.2
after I change it
dependencies:
flutter:
sdk: flutter
webfeed: ^0.4.2
# The following adds the Cupertino Icons font to your application.
# Use with the CupertinoIcons class for iOS style icons.
cupertino_icons: ^0.1.2
I thing you must to put your package name in the same number colunm of flutter: and cupertino_icons:
Check indentations as flutter package in pubspec.yaml takes single dependency source.
make sure, the name of your project is not same as any package ,
this too cause for this error
open your pubspec.yaml file
dependencies:
flutter:
sdk: flutter
cupertino_icons: ^0.1.2
country_code_picker: ^1.0.4
Other answers are correct. I would also like to add that I was trying to add shared_preferences and even though my indentation was correct, I was still getting the error mentioned in the question. To resolve it I changed the name of my project as it was also shared preferences
I kept getting this error no matter what I did, including commenting out the new lines. Finally, I put them back in with the correct indentation and ran the program. The problem magically resolved itself. However, the indentation is critical.
I am getting this error due to duplication of a package in dependencies
i.e:
dependencies:
flutter:
sdk: flutter
**cupertino_icons: ^0.1.2**
english_words: ^3.1.5
# The following adds the Cupertino Icons font to your application.
# Use with the CupertinoIcons class for iOS style icons.
cupertino_icons: ^0.1.2
I solved this error by removing duplication then Flutter clean and then Flutter Packages Get.
Its due to indentation: check out correct way
name: flutter_app
description: A new Flutter application.
environment:
sdk: ">=2.1.0 <3.0.0"
dependencies:
flutter:
sdk: flutter
http: "0.11.3+17"
autocomplete_textfield: ^1.6.4
dev_dependencies:
flutter_test:
sdk: flutter
flutter:
uses-material-design: true
I ran into the same problem turns out the name of my app and the package name were same which resulted into this error.
name of the app scrapy and the dependency was also scrapy...
Changed the name and it worked.
After checking all other solutions if the problem still persists
make sure whether the specified library is installed correctly or not. This error also encounter when the library is not installed correctly.