I've installed Flutter without Android Studio following these two tutorials: https://medium.com/#quicky316/install-flutter-sdk-on-windows-without-android-studio-102fdf567ce4 and https://dev.to/ejgamer21/install-flutter-without-android-studio-58bi.
I have connected my phone with USB debugging enabled and I've run flutter doctor: everything seems to be fine (although I haven't configured an IDE yet). Then I've tried to run the "Hello world" example that comes with Flutter using flutter run in the hello_world directory, but I get this error:
lib/main.dart:5:8: Error: Error when reading '/C:/b/s/w/ir/k/archive/flutter/packages/flutter/lib/widgets.dart': Impossibile trovare il percorso specificato.
import 'package:flutter/widgets.dart';
^
lib/main.dart:12:16: Error: Method not found: 'Key'.
key: Key('title'),
^^^
lib/main.dart:13:26: Error: Getter not found: 'TextDirection'.
textDirection: TextDirection.ltr
^^^^^^^^^^^^^
lib/main.dart:11:9: Error: Method not found: 'Text'.
Text('Hello, world!',
^^^^
lib/main.dart:9:11: Error: Method not found: 'Center'.
const Center(
^^^^^^
lib/main.dart:8:3: Error: Method not found: 'runApp'.
runApp(
^^^^^^
FAILURE: Build failed with an exception.
* Where:
Script 'C:\Users\mpepi\Android\flutter\packages\flutter_tools\gradle\flutter.gradle' line: 896
* What went wrong:
Execution failed for task ':app:compileFlutterBuildDebug'.
> Process 'command 'C:\Users\mpepi\Android\flutter\bin\flutter.bat'' finished with non-zero exit value 1
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Get more help at https://help.gradle.org
BUILD FAILED in 4s
Running Gradle task 'assembleDebug'...
Running Gradle task 'assembleDebug'... Done 4,7s
Exception: Gradle task assembleDebug failed with exit code 1
("Impossibile trovare il percorso specificato" means "Couldn't find the specified path")
Something seems to be wrong with the path for the packages, I have located the required file at C:\Users\mpepi\Android\flutter\packages\flutter\lib which of course is different from the one in the first line. I have set all environment variables as the tutorials explain, what am I missing?
Delete in the .vscode file. Restart the flutter application of visual studio code and run 'Flutter run'. It worked for me.
You could try to set "File Transfer" mode on your phone, it usually is on the notification bar if the phone is conected
For some cases I've also faced the similar issue. This problem is likely to arise when flutter doesn't get the packages. It wasn't even getting the material package, like your widget package.
Fix: Go to pubspec.yaml file. Make sure your internet connection is on and working. If you're developing in vscode you'll find buttons at top-right corner. Click Get Packages and wait until flutter downloads the packages.
If you don't find those buttons, then from the command line navigate to the project folder and run flutter pub get or flutter packages get.
Related
I was building a flutter app in a Windows machine and I stopped working on it for several months, after that I now get issues on running the app. It shows those two errors:
FAILURE: Build completed with 2 failures.
1: Task failed with an exception.
Where:
Build file 'C:\Users\okeyr\AppData\Local\Pub\Cache\hosted\pub.dev\flutter_tts-3.6.3\android\build.gradle' line: 31
What went wrong:
A problem occurred evaluating project ':flutter_tts'.
org/gradle/api/services/BuildService
Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
==============================================================================
2: Task failed with an exception.
Where:
Script 'C:\Program Files\flutter\packages\flutter_tools\gradle\flutter.gradle' line: 463
What went wrong:
A problem occurred configuring project ':flutter_tts'.
Failed to notify project evaluation listener.
Cannot invoke method substring() on null object
compileSdkVersion is not specified.
Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
==============================================================================
Get more help at https://help.gradle.org
Flutter doctor shows everything fine except:
[X] Visual Studio - develop for Windows
X Visual Studio not installed; this is necessary for Windows development.
Download at https://visualstudio.microsoft.com/downloads/.
Please install the "Desktop development with C++" workload, including all of its default components
But I don't think the issue is related with that.
I've I look in depth at failure number 1. I have check the file that gives the error and I found that in line 31:
apply plugin: 'kotlin-android'
So I just went to the file and deleted all the entries related with kotlin, because I am not using Kotlin (I guess).
Then if I rerun the app it now shows another error (related with tts again), but doesn't show the previous ones (not sure if I've moved forward or backwards)
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
C:\Users\okeyr\AndroidStudioProjects\fluttertestapp\android\app\src\main\java\io\flutter\plugins\GeneratedPluginRegistrant.java:24: error: cannot find symbol
flutterEngine.getPlugins().add(new com.tundralabs.fluttertts.FlutterTtsPlugin());
^
symbol: class FlutterTtsPlugin
location: package com.tundralabs.fluttertts
1 error
FAILURE: Build failed with an exception.
What went wrong:
Execution failed for task ':app:compileDebugJavaWithJavac'.
Compilation failed; see the compiler error output for details.
Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
Get more help at https://help.gradle.org
BUILD FAILED in 16s
Exception: Gradle task assembleDebug failed with exit code 1
After doing a search I found many people with that similar issue (even though none was related to tts plugin) which had adressed it with a flutter pub cache repair or a flutter clean. However, a flutter clean gives me no changes and error persists and when I have executed flutter pub cache repair it had shown:
Failed to repair flutter_tts 3.6.3. Error:
Pub failed to delete entry because it was in use by another process.
This may be caused by a virus scanner or having a file
in the directory open in another application.
Reinstalled 29 packages.
Failed to reinstall 1 package:
flutter_tts 3.6.3
pub finished with exit code 69
Now, if I rerun the code it gives me new error:
The plugin flutter_tts doesn't have a main class defined in C:\Users\okeyr\AppData\Local\Pub\Cache\hosted\pub.dev\flutter_tts-3.6.3\android\src\main\java\com\tundralabs\fluttertts\FlutterTtsPlugin.java or C:\Users\okeyr\AppData\Local\Pub\Cache\hosted\pub.dev\flutter_tts-3.6.3\android\src\main\kotlin\com\tundralabs\fluttertts\FlutterTtsPlugin.kt. This is likely to due to an incorrect androidPackage: com.tundralabs.fluttertts or mainClass entry in the plugin's pubspec.yaml.
If you are the author of this plugin, fix the androidPackage entry or move the main class to any of locations used above. Otherwise, please contact the author of this plugin and consider using a different plugin in the meanwhile.
This error also appears when running pub get or pug upgrade. But if I run pub outdated it gives me that:
Showing outdated packages.
[*] indicates versions that are not the latest available.
Package Name Current Upgradable Resolvable Latest
direct dependencies: all up-to-date.
transitive dependencies:
characters *1.2.1 *1.2.1 *1.2.1 1.3.0
collection *1.17.0 *1.17.0 *1.17.0 1.17.1
js *0.6.5 *0.6.5 *0.6.5 0.6.7
meta *1.8.0 *1.8.0 *1.8.0 1.9.0
path *1.8.2 *1.8.2 *1.8.2 1.8.3
transitive dev_dependencies:
matcher *0.12.13 *0.12.13 *0.12.13 0.12.14
test_api *0.4.16 *0.4.16 *0.4.16 0.4.18
all dependencies are up-to-date.
Process finished with exit code 0
I can't see any dependency related with tts.
Now here I am stucked in that error, I don't know how to proceed. If there is someone who could help me see the light I'd be grateful. Thanks in advance.
I am trying to run the code but it seems tts package is not well defined, anyone that could bring me some help?
I was trying to run command 'flutter run' Its giving me errors. There are no issues with flutter doctor. I don't know where the error is from, I tried to run this flutter clean, flutter pub cache repair, flutter run. Still the same error.
Warning: You are using these overridden dependencies:
! intl 0.17.0
Running "flutter pub get" in cretello_rentors_plus_1... 34.3s
Using hardware rendering with device sdk gphone x86 arm. If you notice graphics
artifacts, consider enabling software rendering with
"--enable-software-rendering".
Launching lib\main.dart on sdk gphone x86 arm in debug mode...
/C:/src/flutterSDK/flutter/.pub-cache/hosted/pub.dartlang.org/dynamic_theme-1.0.1/lib/dynamic_theme.dart:25:46: Error: Method not found: 'TypeMatcher'.
return context.ancestorStateOfType(const TypeMatcher<DynamicThemeState>());
^^^^^^^^^^^
/C:/src/flutterSDK/flutter/.pub-cache/hosted/pub.dartlang.org/dynamic_theme-1.0.1/lib/dynamic_theme.dart:25:20: Error: The method 'ancestorStateOfType' isn't defined for the class 'BuildContext'.
- 'BuildContext' is from 'package:flutter/src/widgets/framework.dart' ('/C:/src/flutterSDK/flutter/packages/flutter/lib/src/widgets/framework.dart').
Try correcting the name to the name of an existing method, or defining a method named 'ancestorStateOfType'.
return context.ancestorStateOfType(const TypeMatcher<DynamicThemeState>());
^^^^^^^^^^^^^^^^^^^
FAILURE: Build failed with an exception.
* Where:
Script 'C:\src\flutterSDK\flutter\packages\flutter_tools\gradle\flutter.gradle' line: 1035
* What went wrong:
Execution failed for task ':app:compileFlutterBuildDebug'.
> Process 'command 'C:\src\flutterSDK\flutter\bin\flutter.bat'' finished with non-zero exit value 1
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Get more help at https://help.gradle.org
BUILD FAILED in 43s
Running Gradle task 'assembleDebug'...
Running Gradle task 'assembleDebug'... Done 44.8s
Exception: Gradle task assembleDebug failed with exit code 1```
try one of this solutions
———
https://github.com/fluttercommunity/flutter_google_places/issues/140
This issues is due to your flutter versions. If you are copying others code, make sure to first run.
flutter clean
flutter pub get
If this does not work make sure you use the correct versions of the flutter sdk.
When I try to open the application made with Flutter on the test device, I get the following error. I tried many methods but could not get a successful result. What do you think is the error and how can I resolve it?
/C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/provider-2.0.1+1/lib/src/provider.dart:179:19: Error: The method 'inheritFromWidgetOfExactType' isn't defined for the class 'BuildContext'.
- 'BuildContext' is from 'package:flutter/src/widgets/framework.dart' ('/C:/src/flutter/packages/flutter/lib/src/widgets/framework.dart').
Try correcting the name to the name of an existing method, or defining a method named 'inheritFromWidgetOfExactType'.
? context.inheritFromWidgetOfExactType(type) as _Provider<T>
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
/C:/src/flutter/.pub-cache/hosted/pub.dartlang.org/provider-2.0.1+1/lib/src/provider.dart:180:19: Error: The method 'ancestorInheritedElementForWidgetOfExactType' isn't defined for the class 'BuildContext'.
- 'BuildContext' is from 'package:flutter/src/widgets/framework.dart' ('/C:/src/flutter/packages/flutter/lib/src/widgets/framework.dart').
Try correcting the name to the name of an existing method, or defining a method named 'ancestorInheritedElementForWidgetOfExactType'.
: context.ancestorInheritedElementForWidgetOfExactType(type)?.widget
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
FAILURE: Build failed with an exception.
* Where:
Script 'C:\src\flutter\packages\flutter_tools\gradle\flutter.gradle' line: 991
* What went wrong:
Execution failed for task ':app:compileFlutterBuildDebug'.
> Process 'command 'C:\src\flutter\bin\flutter.bat'' finished with non-zero exit value 1
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Get more help at https://help.gradle.org
BU�LD FAILED in 2m 0s
Exception: Gradle task assembleDebug failed with exit code 1
It looks like you're using the version 2.0.1 of the Provider Library.
This version isn't compatible with the newest versions of Flutter, since the inheritFromWidgetOfExactType was deprecated in Flutter 1.12
You have two choices here, either downgrade the version of Flutter you're using to be below 1.12, or upgrade your Provider import to a newer one (I strongly recommend you to pick the second option !)
You should try this.
Yesterday I Just restarted my pc and got this issue. I tried to search for the solution to this problem but nothing works in my case.
Solution
Just delete your flutter folder (Flutter Source) and then reinstall it. Your problem will solve.
I cloned an app from a git hub repo and when I ran it on my system, it shows this error.
/C:/src/flutter/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.19.3/lib/src/picture_provider.dart:56:45: Error: Method not found: 'Localizations.maybeLocaleOf'.
locale: context != null ? Localizations.maybeLocaleOf(context) : null,
^^^^^^^^^^^^^
/C:/src/flutter/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_svg-0.19.3/lib/src/picture_provider.dart:57:53: Error: Method not found: 'Directionality.maybeOf'.
textDirection: context != null ? Directionality.maybeOf(context) : null,
^^^^^^^
FAILURE: Build failed with an exception.
*Where
Script 'C:\src\flutter\flutter\packages\flutter_tools\gradle\flutter.gradle' line: 904
* What went wrong:
Execution failed for task ':app:compileFlutterBuildDebug'.
> Process 'command 'C:\src\flutter\flutter\bin\flutter.bat'' finished with non-zero exit value 1
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
Here is the snap of the flutter doctor -v
Flutter doctor console snapshot
It keeps showing this error that flutter and dart plugins are not installed. If you could also provide a solution to that or is it that there is some issue with the latest version of flutter?
Please if someone could help!
The error in flutter doctor is normal, everything works despite those two errors.
Did you run flutter pub get after cloning your project?
The error is also specifically telling you to go to the file: 'lib/src/picture_provider.dart'
then go to line #57 and in column 53 there is that error. It might be an outdated package or something incompatible with null-safety.
take a look at this similar question.
I created an Android platform with success, but when I run
ionic build android
I get the following error:
FAILURE: Build failed with an exception.
* What went wrong:
Could not create an instance of type org.gradle.invocation.DefaultGradle_Decorated.
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
ERROR building one of the platforms: Error code 1 for command: /home/skylek/Ionic/conFusion/platforms/android/gradlew with args: cdvBuildDebug,-b,/home/skylek/Ionic/conFusion/platforms/android/build.gradle,-Dorg.gradle.daemon=true,-Pandroid.useDeprecatedNdk=true
You may not have the required environment or OS to build this project
Error: Error code 1 for command: /home/skylek/Ionic/conFusion/platforms/android/gradlew with args: cdvBuildDebug,-b,/home/skylek/Ionic/conFusion/platforms/android/build.gradle,-Dorg.gradle.daemon=true,-Pandroid.useDeprecatedNdk=true
Can anyone help me out.
I had exactly the same problem with an ionic project build with the m-ionic yeoman generator, that was uploaded to the ionic cloud.
It started after my computer crashed with a 'blue screen of death', in the middle of a compilation task
What We did to fix the project was to copy and replacing the gradle and corodova files :
.gradle
cordova
CordovaLib
gradle
gradlew.bat
from other ionic>platform>android project that I knew was working fine, beacuse we thought the Cordova files might be corrupted, and early in the project we fixed a similar compilation problem that way. It did not fixed the problem. But then removed the ionic cloud configuration files: ionic.project .
And it worked!!
I hope it could help you!