I have developed a flutter app that runs well in Chrome (Web-based) but when I try to run on Android phone it gives me the following error:
* What went wrong:
Execution failed for task ':firebase_core:compileDebugJavaWithJavac'.
> java.lang.NullPointerException (no error message)
Will be grateful if someone can send me solution.
D:\flutterapps\etea>flutter doctor -v
[√] Flutter (Channel stable, 2.2.3, on Microsoft Windows [Version 10.0.19042.1165], locale en-GB)
• Flutter version 2.2.3 at c:\flutter
• Framework revision f4abaa0735 (8 weeks ago), 2021-07-01 12:46:11 -0700
• Engine revision 241c87ad80
• Dart version 2.13.4
[!] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
• Android SDK at C:\Users\Lenovo\AppData\Local\Android\sdk
• Platform android-30, build-tools 30.0.3
• Java binary at: C:\Program Files\Justinmind\Justinmind 9.2.0\app\jdk\9.2.0\bin\java
• Java version OpenJDK Runtime Environment 18.9 (build 11.0.2+9)
X Android license status unknown.
Run flutter doctor --android-licenses to accept the SDK licenses.
See https://flutter.dev/docs/get-started/install/windows#android-setup for more details.
[√] Chrome - develop for the web
• Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe
[!] Android Studio (version 4.1.0)
• Android Studio at C:\Program Files\Android\Android Studio
• Flutter plugin can be installed from:
https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
https://plugins.jetbrains.com/plugin/6351-dart
X Unable to determine bundled Java version.
• Try updating or re-installing Android Studio.
[√] Connected device (3 available)
• SM A205F (mobile) • R58M739343L • android-arm64 • Android 11 (API 30)
• Chrome (web) • chrome • web-javascript • Google Chrome 92.0.4515.159
• Edge (web) • edge • web-javascript • Microsoft Edge 92.0.902.78
! Doctor found issues in 2 categories.
Related
I tried to run my project from laptop, and have ancounted to problem.
What went wrong:
A problem occurred configuring root project 'android'.
Could not load compiled classes for build file 'C:\programming\projects\flutter\android\build.gradle' from cache.
I also use firebase and library flutter_background_geolocation 4.8.3
Flutter doctor -v
[√] Flutter (Channel stable, 3.3.8, on Microsoft Windows [Version 10.0.19044.2251], locale ru-RU)
• Flutter version 3.3.8 on channel stable at C:\flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision 52b3dc25f6 (2 days ago), 2022-11-09 12:09:26 +0800
• Engine revision 857bd6b74c
• Dart version 2.18.4
• DevTools version 2.15.0
[√] Android toolchain - develop for Android devices (Android SDK version 33.0.0)
• Android SDK at C:\Users\user\AppData\Local\Android\sdk
• Platform android-33, build-tools 33.0.0
• Java binary at: C:\Program Files\Android\Android Studio1\jre\bin\java
• Java version OpenJDK Runtime Environment (build 11.0.13+0-b1751.21-8125866)
• All Android licenses accepted.
[√] Chrome - develop for the web
• Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe
[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
[√] Android Studio (version 2021.3)
• Android Studio at C:\Program Files\Android\Android Studio1
• Flutter plugin can be installed from:
https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 11.0.13+0-b1751.21-8125866)
[√] VS Code (version 1.70.2)
• VS Code at C:\Users\user\AppData\Local\Programs\Microsoft VS Code
• Flutter extension version 3.52.0
[√] Connected device (4 available)
• Android SDK built for x86 (mobile) • emulator-5554 • android-x86 • Android 10 (API 29) (emulator)
• Windows (desktop) • windows • windows-x64 • Microsoft Windows [Version 10.0.19044.2251]
• Chrome (web) • chrome • web-javascript • Google Chrome 107.0.5304.107
• Edge (web) • edge • web-javascript • Microsoft Edge 107.0.1418.35
[√] HTTP Host Availability
• All required HTTP hosts are available
! Doctor found issues in 1 category.
i show only error message.
What i can do to fix this problem ?
I already tried to flutter clean, flutter pub cache repair, restart laptop, reinstall android studio, and reinstall android emulator.
I'm new to flutter dev and android studio, so basically whenever i run my app on windows(desktop), my app opens for 20sec on windows but then gets closed automatically.
It shows :
"LOST CONNECTION TO DEVICE" ,
I don't know what is the problem !? I didn't even have the app.so file present in any folder, I had to ask a friend to mail me this file, and even after pasting the file in the
build->windows->runner->debug folder, it's showing the same error.
flutter doctor -v result is :
C:\Users\Shaurya>flutter doctor -v
[√] Flutter (Channel stable, 2.10.3, on Microsoft Windows [Version 10.0.19043.1586], locale en-IN)
• Flutter version 2.10.3 at C:\src\flutter\flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision 7e9793dee1 (3 weeks ago), 2022-03-02 11:23:12 -0600
• Engine revision bd539267b4
• Dart version 2.16.1
• DevTools version 2.9.2
[√] Android toolchain - develop for Android devices (Android SDK version 32.0.0)
• Android SDK at C:\Users\Shaurya\AppData\Local\Android\sdk
• Platform android-32, build-tools 32.0.0
• Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
• Java version OpenJDK Runtime Environment (build 11.0.10+0-b96-7249189)
• All Android licenses accepted.
[√] Chrome - develop for the web
• Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe
[√] Visual Studio - develop for Windows (Visual Studio Community 2022 17.1.1)
• Visual Studio at C:\Program Files\Microsoft Visual Studio\2022\Community
• Visual Studio Community 2022 version 17.1.32228.430
• Windows 10 SDK version 10.0.19041.0
[√] Android Studio (version 2020.3)
• Android Studio at C:\Program Files\Android\Android Studio
• Flutter plugin can be installed from:
https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 11.0.10+0-b96-7249189)
[√] VS Code (version 1.65.2)
• VS Code at C:\Users\Shaurya\AppData\Local\Programs\Microsoft VS Code
• Flutter extension version 3.36.0
[√] Connected device (3 available)
• Windows (desktop) • windows • windows-x64 • Microsoft Windows [Version 10.0.19043.1586]
• Chrome (web) • chrome • web-javascript • Google Chrome 99.0.4844.74
• Edge (web) • edge • web-javascript • Microsoft Edge 99.0.1150.46
[√] HTTP Host Availability
• All required HTTP hosts are available
• No issues found!
Please help me out !
I'm currently making an app for Android with Flutter, and I'm using google-mobile-ads package to show banner ads.
My environment is VScode & Android emurator by Android Studio.
To run this project Execute this command:
$ flutter run --no-sound-null-safety
Not with Play button.
However if I run with this command, hot reload is disabled. Any edits don't make any changes.
flutter doctor -v;
[√] Flutter (Channel beta, 2.6.0-5.2.pre, on Microsoft Windows [Version 10.0.22000.282], locale ja-JP)
• Flutter version 2.6.0-5.2.pre at D:\src\flutter_windows_2.5.0-stable\flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision 400608f101 (8 weeks ago), 2021-09-15 15:50:26 -0700
• Engine revision 1d521d89d8
• Dart version 2.15.0 (build 2.15.0-82.2.beta)
[√] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
• Android SDK at D:\Android
• Platform android-30, build-tools 29.0.3
• Java binary at: D:\Program Files\Android\Android Studio\jre\bin\java
• Java version OpenJDK Runtime Environment (build 11.0.8+10-b944.6842174)
• All Android licenses accepted.
[√] Chrome - develop for the web
• Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe
[√] Android Studio (version 4.2)
• Android Studio at D:\Program Files\Android\Android Studio
• Flutter plugin can be installed from:
https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 11.0.8+10-b944.6842174)
[√] VS Code (version 1.62.0)
• VS Code at C:\Users\yukik\AppData\Local\Programs\Microsoft VS Code
• Flutter extension version 3.28.0
[√] Connected device (3 available)
• Android SDK built for x86 (mobile) • emulator-5554 • android-x86 • Android 10 (API 29) (emulator)
• Chrome (web) • chrome • web-javascript • Google Chrome 95.0.4638.69
• Edge (web) • edge • web-javascript • Microsoft Edge 95.0.1020.44
• No issues found!
How can I make this possible?
When using flutter run you should be able to hot reload pressing r and to hot restart using R. Just press them in the terminal where you've used flutter run.
If I remember correctly, launching flutter run you should get all these info on the console as a message when starting!
I met a problem where when I build the application, it shows there is error where the package is not exists. I am using the example code that provided at pub dev of the dependency flutter_secure_storage. I have already change the minSdkVersion to 18.
Can I know is there any ways to fix this problem?
android\app\src\main\java\io\flutter\plugins\GeneratedPluginRegistrant.java:16: error: package com.it_nomads.fluttersecurestorage does not exist
flutterEngine.getPlugins().add(new com.it_nomads.fluttersecurestorage.FlutterSecureStoragePlugin());
^
1 error
My flutter doctor -v
[√] Flutter (Channel stable, 2.2.1, on Microsoft Windows [Version 10.0.18363.1440], locale en-MY)
• Flutter version 2.2.1 at C:\Users\nurfa\flutter
• Framework revision 02c026b03c (6 days ago), 2021-05-27 12:24:44 -0700
• Engine revision 0fdb562ac8
• Dart version 2.13.1
[√] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
• Android SDK at C:\Users\nurfa\AppData\Local\Android\sdk
• Platform android-30, build-tools 30.0.3
• Java binary at: C:\ProgramData\Oracle\Java\javapath\java.exe
• Java version Java(TM) SE Runtime Environment (build 1.8.0_161-b12)
• All Android licenses accepted.
[√] Chrome - develop for the web
• Chrome at C:\Program Files (x86)\Google\Chrome\Application\chrome.exe
[!] Android Studio (not installed)
• Android Studio not found; download from https://developer.android.com/studio/index.html
(or visit https://flutter.dev/docs/get-started/install/windows#android-setup for detailed instructions).
[√] IntelliJ IDEA Community Edition (version 2021.1)
• IntelliJ at C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2021.1
• Flutter plugin can be installed from:
https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
https://plugins.jetbrains.com/plugin/6351-dart
[√] VS Code (version 1.56.2)
• VS Code at C:\Users\nurfa\AppData\Local\Programs\Microsoft VS Code
• Flutter extension version 3.23.0
[√] Connected device (3 available)
• COR L29 (mobile) • XTX7N18B29009354 • android-arm64 • Android 9 (API 28)
• Chrome (web) • chrome • web-javascript • Google Chrome 91.0.4472.77
• Edge (web) • edge • web-javascript • Microsoft Edge 90.0.818.51
after some search through Google, I have found a solution for my issue through Github. It could be some problem in the pub-cache folder. I follow the comment from one post in Github and deleted flutter_secure_storage inside the pub-cache folder and reinstall and it won't show the error anymore.
https://github.com/OneSignal/OneSignal-Flutter-SDK/issues/127#issuecomment-522273569
I am new to flutter and everything was working fine for me until I updated flutter today from 2.0.1 to 2.0.3 when I started to get this error I tried everything from configuring the adb manually and everything I could get on stack overflow. Can anybody help me with this error it will be a great help for me.
[√] Flutter (Channel stable, 2.0.3, on Microsoft Windows [Version 10.0.19042.870], locale en-IN)
• Flutter version 2.0.3 at C:\src\flutter
• Framework revision 4d7946a68d (4 days ago), 2021-03-18 17:24:33 -0700
• Engine revision 3459eb2436
• Dart version 2.12.2
[!] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
• Android SDK at C:\Users\san06\AppData\Local\Android\sdk
• Platform android-S, build-tools 30.0.3
X Android SDK file not found: adb.
• Try re-installing or updating your Android SDK,
visit https://flutter.dev/docs/get-started/install/windows#android-setup for detailed instructions.
[√] Chrome - develop for the web
• Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe
[√] Android Studio (version 4.1.0)
• Android Studio at D:\Program Files\Android\Android Studio
• Flutter plugin can be installed from:
https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)
[√] Connected device (2 available)
• Chrome (web) • chrome • web-javascript • Google Chrome 89.0.4389.90
• Edge (web) • edge • web-javascript • Microsoft Edge 88.0.705.74
! Doctor found issues in 1 category.
I have accepted all android licenses too
D:\Flutter\flutter_udemy_first>flutter doctor --android-licenses
All SDK package licenses accepted.======] 100% Computing updates...
Finally I had to uninstall and reinstall and it worked for me!