Pillow package problem on android #4864

JudicaelK · 2025-02-09T23:23:52Z

JudicaelK
Feb 9, 2025

Hi,

When I try to run my flet app on android, i get "No module named PIL".
Any idea?

Thanks

ndonkoHenri · 2025-02-10T09:25:41Z

ndonkoHenri
Feb 10, 2025
Collaborator

Can you share the content of your pyproject.toml file?

1 reply

JudicaelK Feb 11, 2025
Author

Hi, I don't have this file in my project

FeodorFitsner · 2025-02-11T04:08:34Z

FeodorFitsner
Feb 11, 2025
Maintainer

Can you run flet build with -v option (verbose) and paste the log here?

5 replies

JudicaelK Feb 11, 2025
Author

Hi,

This is the log

(MyFletProject) PS C:\Users\Judicael KOUADIO\PycharmProjects\MyFletProject\MyFletApp> flet build apk -v --module-name .\main.py
[21:46:38] Run subprocess: ['C:\flutter\flutter\bin\flutter.BAT', '--version', '--no-version-check', '--suppress-analytics']
[21:46:39] Flutter executable: C:\flutter\flutter\bin\flutter.BAT
Dart executable: C:\flutter\flutter\bin\dart.BAT
JDK installed at C:\Users\Judicael KOUADIO\java\17.0.13+11
Configuring Flutter's path to JDK
Run subprocess: ['C:\flutter\flutter\bin\flutter.BAT', 'config', '--suppress-analytics', '--jdk-dir=C:\Users\Judicael KOUADIO\java\17.0.13+11']
Setting "jdk-dir" value to "C:\Users\Judicael KOUADIO\java\17.0.13+11".

       You may need to restart any open editors for them to read new settings.
       JDK installed ✅                                                                                                                                                         
       Android SDK installation found at C:\Users\Judicael KOUADIO\AppData\Local\Android\Sdk
       Android SDK package "cmdline-tools;latest" is already installed
       Android SDK package "platform-tools" is already installed
       Android SDK package "platforms;android-35" is already installed
       Android SDK package "build-tools;34.0.0" is already installed
       Android SDK installed ✅                                                                                                                                                 
       Custom Flutter dependencies: {}

[21:46:42] Created Flutter bootstrap project from gh:flet-dev/flet-build-template with ref "0.26.0" ✅
Run subprocess: ['C:\flutter\flutter\bin\dart.BAT', 'run', '--suppress-analytics', 'serious_python:main', 'package', 'C:\Users\Judicael
KOUADIO\PycharmProjects\MyFletProject\MyFletApp', '--platform', 'Android', '--requirements', 'flet==0.26.0', '--exclude', 'build', '--cleanup']
[21:46:45] Running package command
Extra PyPi indexes:
Creating asset directory: C:\Users\Judicael KOUADIO\PycharmProjects\MyFletProject\MyFletApp\build\flutter\app
Created temp directory: C:\Users\JUDICA~1\AppData\Local\Temp\serious_python_tempf4aefe3d
Copying Python app from C:\Users\Judicael KOUADIO\PycharmProjects\MyFletProject\MyFletApp to a temp directory
Cleanup app
Configured Android/arm64-v8a platform with sitecustomize.py
Installing with pip command to C:\Users\Judicael KOUADIO\PycharmProjects\MyFletProject\MyFletApp\build\site-packages\arm64-v8a
Downloading Python distributive from
https://github.com/indygreg/python-build-standalone/releases/download/20240909/cpython-3.12.6+20240909-x86_64-pc-windows-msvc-shared-install_only_stripped.tar.gz to a
build directory
[21:46:48] Extracting Python distributive
[21:47:01] Cleanup installed packages
Configured Android/armeabi-v7a platform with sitecustomize.py
Installing with pip command to C:\Users\Judicael KOUADIO\PycharmProjects\MyFletProject\MyFletApp\build\site-packages\armeabi-v7a
[21:47:08] Cleanup installed packages
[21:47:09] Configured Android/x86_64 platform with sitecustomize.py
Installing with pip command to C:\Users\Judicael KOUADIO\PycharmProjects\MyFletProject\MyFletApp\build\site-packages\x86_64
[21:47:17] Cleanup installed packages
Configured Android/x86 platform with sitecustomize.py
Installing with pip command to C:\Users\Judicael KOUADIO\PycharmProjects\MyFletProject\MyFletApp\build\site-packages\x86
[21:47:25] Cleanup installed packages
[21:47:26] Creating app archive at C:\Users\Judicael KOUADIO\PycharmProjects\MyFletProject\MyFletApp\build\flutter\app/app.zip from a temp directory
Writing app archive hash to C:\Users\Judicael KOUADIO\PycharmProjects\MyFletProject\MyFletApp\build\flutter\app/app.zip.hash
Deleting temp directory
Packaged Python app ✅
[21:47:28] Customized app icons and splash images ✅
Run subprocess: ['C:\flutter\flutter\bin\dart.BAT', 'run', '--suppress-analytics', 'flutter_launcher_icons']
[21:47:31] ════════════════════════════════════════════
FLUTTER LAUNCHER ICONS (v0.14.3)
════════════════════════════════════════════

       • Creating default icons Android
       • Overwriting the default Android launcher icon with a new icon
       • Creating adaptive icons Android
       • No colors.xml file found in your Android project
       • Creating colors.xml file and adding it to your Android project
       • Creating mipmap xml file Android
       • Overwriting default iOS launcher icon with new icon

[21:47:32] Creating Icons for Web...
Creating Icons for Windows...
Creating Icons for MacOS...
[21:47:34]
✓ Successfully generated launcher icons
Generated app icons ✅
Run subprocess: ['C:\flutter\flutter\bin\dart.BAT', 'run', '--suppress-analytics', 'flutter_native_splash:create']
[21:47:36] [Android] Creating default splash images
[Android] Creating dark mode splash images
[Android] Creating default android12splash images
[Android] Creating dark mode android12splash images
[Android] Updating launch background(s) with splash image path...
[Android] - android/app/src/main/res/drawable/launch_background.xml
[Android] - android/app/src/main/res/drawable-night/launch_background.xml
[Android] - android/app/src/main/res/drawable-v21/launch_background.xml
[Android] - android/app/src/main/res/drawable-night-v21/launch_background.xml
[Android] Updating styles...
[Android] - android/app/src/main/res/values-v31/styles.xml
[Android] No android/app/src/main/res/values-v31/styles.xml found in your Android project
[Android] Creating android/app/src/main/res/values-v31/styles.xml and adding it to your Android project
[Android] - android/app/src/main/res/values-night-v31/styles.xml
[Android] No android/app/src/main/res/values-night-v31/styles.xml found in your Android project
[Android] Creating android/app/src/main/res/values-night-v31/styles.xml and adding it to your Android project
[Android] - android/app/src/main/res/values/styles.xml
[Android] - android/app/src/main/res/values-night/styles.xml
Creating images
[21:47:37] Creating dark mode images
Updating ios/Runner/Info.plist for status bar hidden/visible
[Web] Creating images
[Web] Creating images
[Web] Creating background images
[Web] Creating CSS
[21:47:38] [Web] Updating index.html

       ✅ Native splash complete.
       Now go finish building something awesome! 💪 You rock! 🤘🤩
       Like the package? Please give it a 👍 here: https://pub.dev/packages/flutter_native_splash

       Generated splash screens ✅                                                                                                                                              
       Run subprocess: ['C:\\flutter\\flutter\\bin\\flutter.BAT', 'build', 'apk', '--no-version-check', '--suppress-analytics']                                                 
       Resolving dependencies...

[21:47:39] Downloading packages...
archive 3.6.1 (4.0.2 available)
characters 1.3.0 (1.4.0 available)
clock 1.1.1 (1.1.2 available)
collection 1.19.0 (1.19.1 available)
fl_chart 0.69.2 (0.70.2 available)
! flet 0.26.0 (overridden)
flutter_lints 2.0.3 (5.0.0 available)
image 4.3.0 (4.5.2 available)
intl 0.19.0 (0.20.2 available)
js 0.6.7 (0.7.2 available)
lints 2.1.1 (5.1.1 available)
material_color_utilities 0.11.1 (0.12.0 available)
meta 1.15.0 (1.16.0 available)
path 1.9.0 (1.9.1 available)
petitparser 6.0.2 (6.1.0 available)
sensors_plus 4.0.2 (6.1.1 available)
sensors_plus_platform_interface 1.2.0 (2.0.1 available)
toml 0.15.0 (0.16.0 available)
url_strategy 0.2.0 (discontinued)
! wakelock_plus 1.2.10 (overridden)
! web 1.1.0 (overridden)
web_socket_channel 2.4.5 (3.0.2 available)
! webview_flutter_android 4.3.2 (overridden)
win32_registry 1.1.5 (2.0.1 available)
! window_manager 0.4.3 (overridden)
Got dependencies!
1 package is discontinued.
20 packages have newer versions incompatible with dependency constraints.
Try flutter pub outdated for more information.
[21:47:40]
[21:47:59] Running Gradle task 'assembleRelease'...
Warning: SDK processing. This version only understands SDK XML versions up to 3 but an SDK XML file of version 4 was encountered. This can happen if you use versions of
Android Studio and the command-line tools that were released at different times.
[21:48:27] Font asset "CupertinoIcons.ttf" was tree-shaken, reducing it from 257628 to 209160 bytes (18.8% reduction). Tree-shaking can be disabled by providing the
--no-tree-shake-icons flag when building your app.
Font asset "MaterialIcons-Regular.otf" was tree-shaken, reducing it from 1645184 to 1261080 bytes (23.3% reduction). Tree-shaking can be disabled by providing the
--no-tree-shake-icons flag when building your app.
[21:50:35] Running Gradle task 'assembleRelease'... 175,0s
[21:50:36] √ Built build\app\outputs\flutter-apk\app-release.apk (63.6MB)
Built .apk for Android ✅
Copying build output from: C:\Users\Judicael KOUADIO\PycharmProjects\MyFletProject\MyFletApp\build\flutter\build\app\outputs\flutter-apk*
Copied build to build\apk directory ✅
╭──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮│ Successfully built your .apk for Android! 🥳 Find it in build\apk directory. 📁

FeodorFitsner Feb 11, 2025
Maintainer

OK. looks like you don't have pyproject.toml, nor requirements.txt in your project as I see only flet==0.26.0 as dependency.
Either create pyproject.toml with dependencies section and both flet and pillow or requirements.txt.

JudicaelK Feb 11, 2025
Author

After generating reqyuirements.txt file with "pip freeze > requirements.txt", I get the following log :

(MyFletProject) PS C:\Users\Judicael KOUADIO\PycharmProjects\MyFletProject\MyFletApp> pip freeze > requirements.txt
(MyFletProject) PS C:\Users\Judicael KOUADIO\PycharmProjects\MyFletProject\MyFletApp> flet build apk -v --module-name .\main.py
[22:51:21] Run subprocess: ['C:\flutter\flutter\bin\flutter.BAT', '--version', '--no-version-check', '--suppress-analytics']
[22:51:22] Flutter executable: C:\flutter\flutter\bin\flutter.BAT
Dart executable: C:\flutter\flutter\bin\dart.BAT
JDK installed at C:\Users\Judicael KOUADIO\java\17.0.13+11
Configuring Flutter's path to JDK
Run subprocess: ['C:\flutter\flutter\bin\flutter.BAT', 'config', '--suppress-analytics', '--jdk-dir=C:\Users\Judicael KOUADIO\java\17.0.13+11']
Setting "jdk-dir" value to "C:\Users\Judicael KOUADIO\java\17.0.13+11".

       You may need to restart any open editors for them to read new settings.
       JDK installed ✅                                                                                                                                                         
       Android SDK installation found at C:\Users\Judicael KOUADIO\AppData\Local\Android\Sdk
       Android SDK package "cmdline-tools;latest" is already installed
       Android SDK package "platform-tools" is already installed
       Android SDK package "platforms;android-35" is already installed
       Android SDK package "build-tools;34.0.0" is already installed
       Android SDK installed ✅                                                                                                                                                 
       Custom Flutter dependencies: {}

[22:51:25] Created Flutter bootstrap project from gh:flet-dev/flet-build-template with ref "0.26.0" ✅
Run subprocess: ['C:\flutter\flutter\bin\dart.BAT', 'run', '--suppress-analytics', 'serious_python:main', 'package', 'C:\Users\Judicael
KOUADIO\PycharmProjects\MyFletProject\MyFletApp', '--platform', 'Android', '--requirements', '-r,C:\Users\Judicael
KOUADIO\PycharmProjects\MyFletProject\MyFletApp\requirements.txt', '--exclude', 'build', '--cleanup']
[22:51:28] Running package command
Extra PyPi indexes:
Creating asset directory: C:\Users\Judicael KOUADIO\PycharmProjects\MyFletProject\MyFletApp\build\flutter\app
Created temp directory: C:\Users\JUDICA~1\AppData\Local\Temp\serious_python_temp9d021d59
Copying Python app from C:\Users\Judicael KOUADIO\PycharmProjects\MyFletProject\MyFletApp to a temp directory
Cleanup app
Configured Android/arm64-v8a platform with sitecustomize.py
Installing [-r, C:\Users\Judicael KOUADIO\PycharmProjects\MyFletProject\MyFletApp\requirements.txt] with pip command to C:\Users\Judicael
KOUADIO\PycharmProjects\MyFletProject\MyFletApp\build\site-packages\arm64-v8a
Downloading Python distributive from
https://github.com/indygreg/python-build-standalone/releases/download/20240909/cpython-3.12.6+20240909-x86_64-pc-windows-msvc-shared-install_only_stripped.tar.gz to a
build directory
[22:51:32] Extracting Python distributive
[22:51:45] ERROR: Could not find a version that satisfies the requirement flet-desktop==0.26.0 (from versions: none)
ERROR: No matching distribution found for flet-desktop==0.26.0
<_io.TextIOWrapper name=4 encoding='utf8'>
Run subprocess: ['C:\flutter\flutter\bin\flutter.BAT', 'doctor', '--no-version-check', '--suppress-analytics']
[22:51:50] Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, 3.27.4, on Microsoft Windows , locale fr-FR)
[√] Windows Version (Installed version of Windows is version 10 or higher)
[√] Android toolchain - develop for Android devices (Android SDK version 35.0.0)
[√] Chrome - develop for the web
[!] Visual Studio - develop Windows apps (Visual Studio Community 2022 17.5.5)
X Visual Studio is missing necessary components. Please re-run the Visual Studio installer for the "Desktop development with C++" workload, and include these
components:
MSVC v142 - VS 2019 C++ x64/x86 build tools
- If there are multiple build tool versions available, install the latest
C++ CMake tools for Windows
Windows 10 SDK
[!] Android Studio (version 2021.2)
X Unable to determine bundled Java version.
[√] Android Studio (version 2024.2)
[√] VS Code (version 1.97.0)
[√] Connected device (3 available)
[√] Network resources

       ! Doctor found issues in 2 categories.

╭──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
│ Error building Flet app - see the log of failed command above. │
╰──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯
(MyFletProject) PS C:\Users\Judicael KOUADIO\PycharmProjects\MyFletProject\MyFletApp>

ndonkoHenri Feb 11, 2025
Collaborator

Don't use pip freeze.

The requirements file should contain only the direct dependencies of your app. (flet, pillow, etc)

JudicaelK Feb 12, 2025
Author

Thanks, it works now, I'm now able to launch an app on the phone.

Unfortunately I have an other issue.

I tried to donwload images in the app but doesn't work.

Does flet requires explicite in code read and write permissions before memory access on phone?

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Pillow package problem on android #4864

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Pillow package problem on android #4864

JudicaelK Feb 9, 2025

Replies: 2 comments · 6 replies

ndonkoHenri Feb 10, 2025 Collaborator

JudicaelK Feb 11, 2025 Author

FeodorFitsner Feb 11, 2025 Maintainer

JudicaelK Feb 11, 2025 Author

FeodorFitsner Feb 11, 2025 Maintainer

JudicaelK Feb 11, 2025 Author

ndonkoHenri Feb 11, 2025 Collaborator

JudicaelK Feb 12, 2025 Author

JudicaelK
Feb 9, 2025

Replies: 2 comments 6 replies

ndonkoHenri
Feb 10, 2025
Collaborator

JudicaelK Feb 11, 2025
Author

FeodorFitsner
Feb 11, 2025
Maintainer

JudicaelK Feb 11, 2025
Author

FeodorFitsner Feb 11, 2025
Maintainer

JudicaelK Feb 11, 2025
Author

ndonkoHenri Feb 11, 2025
Collaborator

JudicaelK Feb 12, 2025
Author