I have integrated firebase firestore with my flutter app recently. Even after following the steps properly, I'm getting this error 'PlatformException (PlatformException(channel-error, Unable to establish connection on channel., null, null))'. I have tried doing 'flutter clean' and then 'flutter pub get' many times. restarted the editor...but not use...
BTW, I've also tried to configure 'flutterfire configure' using CLI...that returns 0 firebase projects
This is my pubspec.yaml file
name: emag
description: A new Flutter project.
# The following line prevents the package from being accidentally published to
# pub.dev using `flutter pub publish`. This is preferred for private packages.
publish_to: 'none' # Remove this line if you wish to publish to pub.dev
# The following defines the version and build number for your application.
# A version number is three numbers separated by dots, like 1.2.43
# followed by an optional build number separated by a +.
# Both the version and the builder number may be overridden in flutter
# build by specifying --build-name and --build-number, respectively.
# In Android, build-name is used as versionName while build-number used as versionCode.
# Read more about Android versioning at https://developer.android.com/studio/publish/versioning
# In iOS, build-name is used as CFBundleShortVersionString while build-number is used as CFBundleVersion.
# Read more about iOS versioning at
# https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
# In Windows, build-name is used as the major, minor, and patch parts
# of the product and file versions while build-number is used as the build suffix.
version: 1.0.0+1
environment:
sdk: '>=2.18.6 <3.0.0'
# Dependencies specify other packages that your package needs in order to work.
# To automatically upgrade your package dependencies to the latest versions
# consider running `flutter pub upgrade --major-versions`. Alternatively,
# dependencies can be manually updated by changing the version numbers below to
# the latest version available on pub.dev. To see which dependencies have newer
# versions available, run `flutter pub outdated`.
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
# An SVG rendering and widget library for Flutter, which allows painting and displaying Scalable Vector Graphics 1.1 files.
flutter_svg: ^2.0.0+1
# A Flutter Carousel widget.
carousel_slider: ^4.2.1
# The best swiper for flutter , with multiple layouts, infinite loop. Compatible with Android & iOS.
flutter_swiper: ^1.1.6
# The best swiper(carousel) for flutter, with multiple layouts, infinite loop. Compatible with Android & iOS.
flutter_swiper_plus: ^2.0.4
cloud_firestore: ^4.3.1
firebase_auth: ^4.2.5
firebase_storage: ^11.0.10
google_sign_in: ^5.4.4
shared_preferences: ^2.0.17
dev_dependencies:
flutter_test:
sdk: flutter
# The "flutter_lints" package below contains a set of recommended lints to
# encourage good coding practices. The lint set provided by the package is
# activated in the `analysis_options.yaml` file located at the root of your
# package. See that file for information about deactivating specific lint
# rules and activating additional ones.
flutter_lints: ^2.0.0
# For information on the generic Dart part of this file, see the
# following page: https://dart.dev/tools/pub/pubspec
# The following section is specific to Flutter packages.
flutter:
# The following line ensures that the Material Icons font is
# included with your application, so that you can use the icons in
# the material Icons class.
uses-material-design: true
# To add assets to your application, add an assets section, like this:
assets:
- assets/images/leaderboard.svg
- assets/images/landscape.jpg
- assets/images/falls.jpg
# - images/a_dot_ham.jpeg
# An image asset can refer to one or more resolution-specific "variants", see
# https://flutter.dev/assets-and-images/#resolution-aware
# For details regarding adding assets from package dependencies, see
# https://flutter.dev/assets-and-images/#from-packages
# To add custom fonts to your application, add a fonts section here,
# in this "flutter" section. Each entry in this list should have a
# "family" key with the font family name, and a "fonts" key with a
# list giving the asset and other descriptors for the font. For
# example:
fonts:
- family: Poppins
fonts:
- asset: fonts/Poppins-Medium.ttf
weight: 500
- asset: fonts/Poppins-SemiBold.ttf
weight: 600
# - family: Trajan Pro
# fonts:
# - asset: fonts/TrajanPro.ttf
# - asset: fonts/TrajanPro_Bold.ttf
# weight: 700
#
# For details regarding fonts from package dependencies,
# see https://flutter.dev/custom-fonts/#from-packages
Could anyone spot the reason for this exception?
I have changed some versions of packages that I suspected to be the reason, but no use
Try to follow these steps:
Step 1
flutter pub outdated
Step 2
flutter pub upgrade outdated_package
Step 3
flutter clean
Step 4
flutter pub get
Step 5
flutter run
Related
so I executed a flutter clean command for my flutter project and then the flutter pub get command but now my flutter project is showing multiple errors in the pubspec.yaml file the code is running but there are unknown errors that are shown. where now even if i create a new flutter project it shows error so i reinstalled the flutter and it still shows the same for pubspec.yaml file only.
please help me out..............
refer the image for error:
name: worksaga
description: A new Flutter project.
# The following line prevents the package from being accidentally published to
# pub.dev using `flutter pub publish`. This is preferred for private packages.
publish_to: 'none' # Remove this line if you wish to publish to pub.dev
# The following defines the version and build number for your application.
# A version number is three numbers separated by dots, like 1.2.43
# followed by an optional build number separated by a +.
# Both the version and the builder number may be overridden in flutter
# build by specifying --build-name and --build-number, respectively.
# In Android, build-name is used as versionName while build-number used as versionCode.
# Read more about Android versioning at https://developer.android.com/studio/publish/versioning
# In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion.
# Read more about iOS versioning at
# https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
version: 1.0.0+1
environment:
sdk: ">=2.16.1 <3.0.0"
# Dependencies specify other packages that your package needs in order to work.
# To automatically upgrade your package dependencies to the latest versions
# consider running `flutter pub upgrade --major-versions`. Alternatively,
# dependencies can be manually updated by changing the version numbers below to
# the latest version available on pub.dev. To see which dependencies have newer
# versions available, run `flutter pub outdated`.
dependencies:
flutter:
sdk: flutter
flutter_signin_button: ^2.0.0
multi_image_picker2: ^5.0.2
http: ^0.13.4
loader_overlay: ^2.0.5
shared_preferences: ^2.0.12
dio: ^4.0.4
# The following adds the Cupertino Icons font to your application.
# Use with the CupertinoIcons class for iOS style icons.
path_provider: ^2.0.8
intl: ^0.17.0
flutter_date_picker_timeline: ^0.3.3
carousel_slider: ^4.0.0
cached_network_image: ^3.2.0
# The following adds the Cupertino Icons font to your application.
# Use with the CupertinoIcons class for iOS style icons.
cupertino_icons: ^1.0.2
flutter_svg: ^1.0.3
dev_dependencies:
flutter_test:
sdk: flutter
google_fonts: ^2.3.1
# The "flutter_lints" package below contains a set of recommended lints to
# encourage good coding practices. The lint set provided by the package is
# activated in the `analysis_options.yaml` file located at the root of your
# package. See that file for information about deactivating specific lint
# rules and activating additional ones.
flutter_lints: ^1.0.0
# For information on the generic Dart part of this file, see the
# following page: https://dart.dev/tools/pub/pubspec
# The following section is specific to Flutter.
flutter:
# The following line ensures that the Material Icons font is
# included with your application, so that you can use the icons in
# the material Icons class.
uses-material-design: true
# To add assets to your application, add an assets section, like this:
assets:
- assets/images/
- assets/icons/
# - images/a_dot_ham.jpeg
# An image asset can refer to one or more resolution-specific "variants", see
# https://flutter.dev/assets-and-images/#resolution-aware.
# For details regarding adding assets from package dependencies, see
# https://flutter.dev/assets-and-images/#from-packages
# To add custom fonts to your application, add a fonts section here,
# in this "flutter" section. Each entry in this list should have a
# "family" key with the font family name, and a "fonts" key with a
# list giving the asset and other descriptors for the font. For
# example:
fonts:
- family: NanumMyeongjo
fonts:
- asset: assets/fonts/NanumMyeongjo-ExtraBold.ttf
# - asset: assets/fonts/NanumMyeongjo-Bold.ttf
# weight: 500
# - asset: assets/fonts/NanumMyeongjo-ExtraBold.ttf
# weight: 700
# - family: Trajan Pro
# fonts:
# - asset: fonts/TrajanPro.ttf
# - asset: fonts/TrajanPro_Bold.ttf
# weight: 700
#
# For details regarding fonts from package dependencies,
# see https://flutter.dev/custom-fonts/#from-packages
It seems that you've added a tab/space before the name property (first line) in your pubspec.yaml. Indentation is very important in YAML files since it indicates and separates flow blocks.
I made the icon for my app but still flutter logo is available and How can I solve the problem.
in pubspec.yaml:
enter image description here
name: kidsgame
description: A new Flutter project.
The following line prevents the package from being accidentally
published to
# pub.dev using flutter pub publish. This is preferred for private packages.
publish_to: 'none' # Remove this line if you wish to publish to pub.dev
# The following defines the version and build number for your application.
# A version number is three numbers separated by dots, like 1.2.43
# followed by an optional build number separated by a +.
# Both the version and the builder number may be overridden in flutter
# build by specifying --build-name and --build-number, respectively.
# In Android, build-name is used as versionName while build-number used as versionCode.
# Read more about Android versioning at https://developer.android.com/studio/publish/versioning
# In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion.
# Read more about iOS versioning at
# https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
version: 1.0.0+1
environment:
sdk: ">=2.15.1 <3.0.0"
# Dependencies specify other packages that your package needs in order to work.
# To automatically upgrade your package dependencies to the latest versions
# consider running `flutter pub upgrade --major-versions`. Alternatively,
# dependencies can be manually updated by changing the version numbers below to
# the latest version available on pub.dev. To see which dependencies have newer
# versions available, run `flutter pub outdated`.
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
audioplayers:
flutter_launcher_icons: ^0.9.2
dev_dependencies:
flutter_test:
sdk: flutter
flutter_launcher_icons: "^0.9.2"
flutter_icons:
android: "launcher_icon"
ios: true
image_path: "assets/icons/logo.png"
# The "flutter_lints" package below contains a set of recommended lints to
# encourage good coding practices. The lint set provided by the package is
# activated in the `analysis_options.yaml` file located at the root of your
# package. See that file for information about deactivating specific lint
# rules and activating additional ones.
flutter_lints: ^1.0.0
# For information on the generic Dart part of this file, see the
# following page: https://dart.dev/tools/pub/pubspec
# The following section is specific to Flutter.
flutter:
# The following line ensures that the Material Icons font is
# included with your application, so that you can use the icons in
# the material Icons class.
uses-material-design: true
# To add assets to your application, add an assets section, like this:
# assets:
assets:
- assets/clap.mp3
# - images/a_dot_burr.jpeg
# - images/a_dot_ham.jpeg
# An image asset can refer to one or more resolution-specific "variants", see
# https://flutter.dev/assets-and-images/#resolution-aware.
# For details regarding adding assets from package dependencies, see
# https://flutter.dev/assets-and-images/#from-packages
# To add custom fonts to your application, add a fonts section here,
# in this "flutter" section. Each entry in this list should have a
# "family" key with the font family name, and a "fonts" key with a
# list giving the asset and other descriptors for the font. For
# example:
# fonts:
# - family: Schyler
# fonts:
# - asset: fonts/Schyler-Regular.ttf
# - asset: fonts/Schyler-Italic.ttf
# style: italic
# - family: Trajan Pro
# fonts:
# - asset: fonts/TrajanPro.ttf
# - asset: fonts/TrajanPro_Bold.ttf
# weight: 700
#
# For details regarding fonts from package dependencies,
# see https://flutter.dev/custom-fonts/#from-packages
[1]: https://i.stack.imgur.com/7lPn6.pn
g
You can use Flutter launcher icon : https://pub.dev/packages/flutter_launcher_icons
It will help you manage your app icons.
My pubspec.yaml has no error, my app works perfectly on my emulator, but when I got to android studio (to add app logo or to create .aab) there is gradle failed.
I'm pretty sure this problem comes from my pubspec file, because when I create a new projet it works perfectly, but when I modify my pubspec, I can't open the projet in Android studio.
As I re-use lots of packages, I paste a pubspec from an other projet (Of course, I change the app id)
name: appid
description: A new Flutter project.
# The following line prevents the package from being accidentally published to
# pub.dev using `pub publish`. This is preferred for private packages.
publish_to: 'none' # Remove this line if you wish to publish to pub.dev
# The following defines the version and build number for your application.
# A version number is three numbers separated by dots, like 1.2.43
# followed by an optional build number separated by a +.
# Both the version and the builder number may be overridden in flutter
# build by specifying --build-name and --build-number, respectively.
# In Android, build-name is used as versionName while build-number used as versionCode.
# Read more about Android versioning at https://developer.android.com/studio/publish/versioning
# In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion.
# Read more about iOS versioning at
# https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
version: 1.0.0+1
environment:
sdk: ">=2.7.0 <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
auto_size_text:
shared_preferences:
firebase_core: ^1.0.3
firebase_database: ^6.1.2
uuid:
flutter_statusbarcolor:
flutter_admob_app_open:
google_mobile_ads:
open_ad_flutter:
pull_to_refresh:
flutter_launcher_icons:
cached_network_image:
url_launcher:
firebase_messaging: ^11.1.0
flutter_local_notifications: ^5.0.0+4
firebase_analytics:
in_app_review:
sendgrid_mailer:
google_fonts:
dev_dependencies:
flutter_test:
sdk: flutter
# For information on the generic Dart part of this file, see the
# following page: https://dart.dev/tools/pub/pubspec
# The following section is specific to Flutter.
flutter:
# The following line ensures that the Material Icons font is
# included with your application, so that you can use the icons in
# the material Icons class.
uses-material-design: true
# To add assets to your application, add an assets section, like this:
assets:
- assets/images/
# - images/a_dot_ham.jpeg
# An image asset can refer to one or more resolution-specific "variants", see
# https://flutter.dev/assets-and-images/#resolution-aware.
# For details regarding adding assets from package dependencies, see
# https://flutter.dev/assets-and-images/#from-packages
# To add custom fonts to your application, add a fonts section here,
# in this "flutter" section. Each entry in this list should have a
# "family" key with the font family name, and a "fonts" key with a
# list giving the asset and other descriptors for the font. For
# example:
# fonts:
# - family: Schyler
# fonts:
# - asset: fonts/Schyler-Regular.ttf
# - asset: fonts/Schyler-Italic.ttf
# style: italic
# - family: Trajan Pro
# fonts:
# - asset: fonts/TrajanPro.ttf
# - asset: fonts/TrajanPro_Bold.ttf
# weight: 700
#
# For details regarding fonts from package dependencies,
# see https://flutter.dev/custom-fonts/#from-packages
It is quite annoying as I need to recreate a projet every time this happen.
I don't have errors, I got this message
Deprecated Gradle features were used in this build, making it incompatible with Gradle 7.0.
The AbstractArchiveTask.destinationDir property has been deprecated. This is scheduled to be removed in Gradle 7.0. Please use the
destinationDirectory property instead.
This helps me for Deprecated Gradle features were used in build
cd android && ./gradlew clean
I am pretty new to the flame game engine but whenever I try to run my program it keeps saying that
Error: Cannot run with sound null safety, because the following dependencies
don't support null safety:
package:flame
package:ordered_set
package:box2d_flame
I am just wondering if maybe I am not using the most current version of flame or if I need to temporarily disable null safety? Here is what my pubspec.yaml file currently looks like.
name: first_game
description: A new Flutter project.
# The following line prevents the package from being accidentally published to
# pub.dev using `pub publish`. This is preferred for private packages.
publish_to: 'none' # Remove this line if you wish to publish to pub.dev
# The following defines the version and build number for your application.
# A version number is three numbers separated by dots, like 1.2.43
# followed by an optional build number separated by a +.
# Both the version and the builder number may be overridden in flutter
# build by specifying --build-name and --build-number, respectively.
# In Android, build-name is used as versionName while build-number used as versionCode.
# Read more about Android versioning at https://developer.android.com/studio/publish/versioning
# In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion.
# Read more about iOS versioning at
# https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
version: 1.0.0+1
environment:
sdk: ">=2.12.0 <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
shared_preferences: ^2.0.5
flame: ^0.29.4
dev_dependencies:
flutter_test:
sdk: flutter
# For information on the generic Dart part of this file, see the
# following page: https://dart.dev/tools/pub/pubspec
# The following section is specific to Flutter.
flutter:
# The following line ensures that the Material Icons font is
# included with your application, so that you can use the icons in
# the material Icons class.
uses-material-design: true
# To add assets to your application, add an assets section, like this:
assets:
- assets/images/terrythemale.png
# - images/a_dot_ham.jpeg
# An image asset can refer to one or more resolution-specific "variants", see
# https://flutter.dev/assets-and-images/#resolution-aware.
# For details regarding adding assets from package dependencies, see
# https://flutter.dev/assets-and-images/#from-packages
# To add custom fonts to your application, add a fonts section here,
# in this "flutter" section. Each entry in this list should have a
# "family" key with the font family name, and a "fonts" key with a
# list giving the asset and other descriptors for the font. For
# example:
# fonts:
# - family: Schyler
# fonts:
# - asset: fonts/Schyler-Regular.ttf
# - asset: fonts/Schyler-Italic.ttf
# style: italic
# - family: Trajan Pro
# fonts:
# - asset: fonts/TrajanPro.ttf
# - asset: fonts/TrajanPro_Bold.ttf
# weight: 700
#
# For details regarding fonts from package dependencies,
# see https://flutter.dev/custom-fonts/#from-packages
That is the current stable version, our newest version is 1.0.0-rc10 and in that one we do support null-safety (this is the version that all of our docs are for too).
Do note however that pub counts rc10 as smaller than rc9, so you have to skip the ^ in your pubspec file and depend specifically on rc10 like this:
dependencies:
...
flame: 1.0.0-rc10
We will most likely release rc11 later today which won't have this problem.
EDIT: rc11 is now released so now you can use ^ again:
dependencies:
...
flame: "^1.0.0-releasecandidate.11"
Based on the pubspec from the version you are using: https://github.com/flame-engine/flame/blob/0.29.3/pubspec.yaml
environment:
sdk: ">=2.3.0 <3.0.0"
flutter: ">=1.6.0"
The answer is no. But there are a release candidate version (latest 1.0.0-rc10) which seems to support null safety: https://github.com/flame-engine/flame/blob/1.0.0-rc10/packages/flame/pubspec.yaml
environment:
sdk: ">=2.12.0 <3.0.0"
flutter: ">=1.24.0"
So you can either wait for "1.0.0" to be released or use the release candidate.
Judging by the error and also I was unable to find the mention of sound null safety in the release documentation of flame v0.29.4 I think its still not migrated to null safety.
your min sdk version in pubspec.yaml is 2.12 which makes your app use sound null safety by default so to build the project use flag --no-sound-null-safety with flutter /dart commands Eg. "$ flutter run --no-sound-null-safety" . and for more info visit https://dart.dev/null-safety/unsound-null-safety.
Migrate your flutter dart package because everything is now about the null safety
So after updating of flutter(version sdk 2.0.2) it allows only null safety plugin .
Follow these migration commands one by one.
Step 1)
dart migrate
If your migrate is fail. So, there will be some reasons behind that like,
some flutter plugins are not upgraded.
or else somewhere some plugin is dependent on some other no null safety plugin.
Step 2)
flutter pub outdated --mode=null-safety
By using this command you can see latest package version/ Plugin with null safety. From here you can update plugin versions.
Step 3) again run this command
dart migrate
Step 4)
flutter pub upgrade
Step 5)
flutter pub get
Step 6)
flutter run
Using this link more idea
https://youtu.be/eBr5tlumwlg
I've just set up my Windows for flutter development,
So I downloaded flutter SDK, and placed it in my directory. After, I set up my path variable to work with flutter in my command line.
I also set up my visual studio code with Dart-Code so I have the proper syntax highlight, IntelliSense, etc.
I want to use velocityX and installed the extension.
and also using PubSpec Assistant (Ctrl+Shift+p) I added the dependencies
So when I open visual studio code, it highlights the import method, like the following image(Showing Error only for VelocityX package not for material.dart):
I want to use velocityX and installed the extension.
and also using PubSpec Assistant I added the dependencies.
here is my PubSpec File:-
name: radio_app
description: A new Flutter project.
# The following line prevents the package from being accidentally published to
# pub.dev using `pub publish`. This is preferred for private packages.
publish_to: 'none' # Remove this line if you wish to publish to pub.dev
# The following defines the version and build number for your application.
# A version number is three numbers separated by dots, like 1.2.43
# followed by an optional build number separated by a +.
# Both the version and the builder number may be overridden in flutter
# build by specifying --build-name and --build-number, respectively.
# In Android, build-name is used as versionName while build-number used as versionCode.
# Read more about Android versioning at https://developer.android.com/studio/publish/versioning
# In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion.
# Read more about iOS versioning at
# https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
version: 1.0.0+1
environment:
sdk: ">=2.7.0 <3.0.0"
dependencies:
flutter:
sdk: flutter
audioplayers: ^0.17.4
cupertino_icons: ^1.0.2
velocity_x: ^2.5.0
dev_dependencies:
flutter_test:
sdk: flutter
# For information on the generic Dart part of this file, see the
# following page: https://dart.dev/tools/pub/pubspec
# The following section is specific to Flutter.
flutter:
# The following line ensures that the Material Icons font is
# included with your application, so that you can use the icons in
# the material Icons class.
uses-material-design: true
# To add assets to your application, add an assets section, like this:
# assets:
# - images/a_dot_burr.jpeg
# - images/a_dot_ham.jpeg
# An image asset can refer to one or more resolution-specific "variants", see
# https://flutter.dev/assets-and-images/#resolution-aware.
# For details regarding adding assets from package dependencies, see
# https://flutter.dev/assets-and-images/#from-packages
# To add custom fonts to your application, add a fonts section here,
# in this "flutter" section. Each entry in this list should have a
# "family" key with the font family name, and a "fonts" key with a
# list giving the asset and other descriptors for the font. For
# example:
# fonts:
# - family: Schyler
# fonts:
# - asset: fonts/Schyler-Regular.ttf
# - asset: fonts/Schyler-Italic.ttf
# style: italic
# - family: Trajan Pro
# fonts:
# - asset: fonts/TrajanPro.ttf
# - asset: fonts/TrajanPro_Bold.ttf
# weight: 700
#
# For details regarding fonts from package dependencies,
# see https://flutter.dev/custom-fonts/#from-packages
I also Did following commands :-
flutter clean
flutter get packages
flutter upgrade packages
and restarted the VS code still it's not working
Any help will be appreciated..!!!!
run flutter pub get this should solve the problem.
You need to save pubspec.yaml file. Then you can get that package. That file is still in edit mode as in your screenshot.