I'm building new flutter app, I've downloaded the last version of path_provider package, but when I try to import it using the import statement form the docs
import 'package:path_provider/path_provider.dart';
It didn't work, it says this package doesn't exist, instead I can import things like
import 'package:path_provider_linux/path_provider_linux.dart';
which doens't have the functionality I want.
Can you build the application?
Are you deploying to mobile or MacOS?
Try to run a fresh release configuration, and if it works, then reboot your IDE.
Then run the command that Confidence Yobo suggested, to redownload the packages via yaml.
Also make sure that your yaml file is formatted correctly. Once a pubspec GET command has finished running and the lock is released, normally if there is an error it will show up on your output window.
Also make sure to get the latest package: path_provider: ^1.6.18
Related
By updating Flutter 3.8.0
I am getting the following error in flutter_date_time_picker.
I would like to know if anyone knows a solution to this problem.
../../../../.pub-cache/git/flutter_datetime_picker-eb66486c47d50bf550950c196486121ffcea8885/lib/flutter_datetime_picker.dart:7:1: Error:
'DatePickerTheme' is imported from both 'package:flutter/src/material/date_picker_theme.dart' and'package:flutter_datetime_picker/src/datetime_picker_theme.dart'.
pubspeck.yaml
flutter_datetime_picker:
git:
url: https://github.com/Realank/flutter_datetime_picker.git
If anyone knows of a solution, I would love to hear about it.
I believe this is probably due to the flutter update, as I was able to build normally until yesterday!
If anyone knows of a solution, I would love to hear about it.
You can try the following steps:
Remove the flutter_datetime_picker package from your pubspec.yaml file.
Run flutter clean in your terminal to remove any cached files.
Re-install the flutter_datetime_picker package.
first try to flutter clean and then pub get and reinstall the package you want. if again you had this error try this:
To resolve it; in the class where you have both imports, assign an alias to one of the packages using the as keyword.
import 'package:flutter/src/material/date_picker_theme.dart' as dp
dp.EveryMethodYouWant(); //call the class using the alias
if you had any question i'm here.
happy coding.
By mistakenly,you have imported the wrong package because as per the package documentation, there is no such line mentioned.
Import the package mentioned below and try pub get.
import 'package:flutter_datetime_picker/flutter_datetime_picker.dart';
everything vill works fine.
My flutter has suddenly started giving me this error on assets_audio_player : "Undefined class 'AssetsAudioPlayer'.". The import for the player: import 'package:assets_audio_player/assets_audio_player.dart'; is also greyed out. I've tried upgrading the flutter & restarting the device but the issue is still there. Any clue what might've gone wrong? Thank you!
Before importing the package in your code, did you properly add its dependency in your "pubspec.yaml" file and then run the flutter pub get command?
I am guessing you're using this package.
Be sure to add a line like this to your package's pubspec.yaml (and run an implicit flutter pub get).
dependencies:
assets_audio_player: ^3.0.4+1
I want to install a simple audio recorder which will record a user’s voice. I know I can find plugins on PubDev, however I have difficulty in integrating them into my Flutter project. I have installed ‘audio_recorder 1.0.2. in a new dart file as part of ‘lib’. I don’t know how to integrate this file into the flutter project. I have tried to a button in another dart file which when pressed would take the user to that file, without succes. ‘This class is not a widget’ is the message I get. The ‘GitHub’ version has the errors ‘undefined class’, ‘LocalFileSystem isn’t defined for the type ‘AudioRecorder’. The example version (why this difference?) has quite a few errors after installation. Dependencies and imports are ok. When I install audio_recorder 1.0.2 inside the project via ‘Dart packages’ I get a lot of errors. I have successfully installed an audio recorder in another android app. I would like some help in how to integrate plugins in a flutter project.
The plugins have instructions on how to install it. Got to your pubspec.yaml-file and put it under dependencies.
Make sure that you add your dependency to pubspec.yaml like this:
dependencies:
audio_recorder: ^1.0.2
After that make sure to type "flutter pub get" in console.
Go on a specified file in which you want to use Your dependency and import it like this:
import 'package:audio_recorder/audio_recorder.dart';
I will like to know how to import a new package from third party in flutter and call it in my code?
You can find a lot of packages on Pub.dev.
To import it just open any package and navigate to the Installing Tab.
Then you just need to copy this sentence to your pubspec.yaml file.
Paste line under dependencies in pubspec.yaml. Note that spaces is very important so make it start just under flutter: when pasting.
Save changes in pubspec.yaml and it will install the packages automatically. If it doesn't install run flutter pub get from command line to install the package manually.
Lastly do not forget to import the library at the top of the file by using the line provided here:
Put the library in pubspec.yaml, then run flutter packages get in your IDE terminal.
Ex:
I'm using toast package, so I will define this in pubspec.yaml
toast: ^0.1.5
I am new to flutter.io and trying to create my first flutter app according to the following guide
https://codelabs.developers.google.com/codelabs/first-flutter-app-pt1/#2
I used terminal command flutter run to start my application and then found an error as follows.
Your application could not be compiled, because its dependencies could not be established.
The following Dart file:
./startup_namer/lib/main.dart
...refers, in an import, to the following library:
/opt/flutter/packages/flutter/lib/meterial.dart
Unfortunately, that library does not appear to exist on your file system.
Couldn't find more details on how to resolve this issue.I am gussing that i should install this library package within my setup.What is the easiest method to install flutter library package from terminal?
Note: i created the app using command flutter create startup_namer
Judging by the error message you have mis-spelled the package in the import statements meterial.dart
It should be:
import 'package:flutter/material.dart';
Note: You may run into same error if you were to change the variable "name: myapp" in your pubspec.yaml file with "import 'package:myapp/settings.dart';" as the custom package in the main.dart file as was intended to add "comanyName" text to the app launcher icons. Fix: changed back to "name: myapp" removed the error