Error Building Flet App Due to flet-audio-recorder==0.1.0 in pyproject.toml #5003
Description
Duplicate Check
- I have searched the opened issues and there are no duplicates
Describe the bug
When including flet-audio-recorder==0.1.0 in the pyproject.toml dependencies and attempting to build a Flet app, the build process fails with an error message:
"Error building Flet app - see the log of failed command above."
Code sample
Code
import flet as ft
import flet_audio_recorder as far
async def main(page: ft.Page):
page.horizontal_alignment = ft.CrossAxisAlignment.CENTER
page.appbar = ft.AppBar(title=ft.Text("Audio Recorder"), center_title=True)
path = "test-audio-file.wav"
async def handle_start_recording(e):
print(f"StartRecording: {path}")
await audio_rec.start_recording_async(path)
async def handle_stop_recording(e):
output_path = await audio_rec.stop_recording_async()
print(f"StopRecording: {output_path}")
if page.web and output_path is not None:
await page.launch_url_async(output_path)
async def handle_list_devices(e):
devices = await audio_rec.get_input_devices_async()
print(devices)
async def handle_has_permission(e):
try:
print(f"HasPermission: {await audio_rec.has_permission_async()}")
except Exception as e:
print(e)
async def handle_pause(e):
print(f"isRecording: {await audio_rec.is_recording_async()}")
if await audio_rec.is_recording_async():
await audio_rec.pause_recording_async()
async def handle_resume(e):
print(f"isPaused: {await audio_rec.is_paused_async()}")
if await audio_rec.is_paused_async():
await audio_rec.resume_recording_async()
async def handle_audio_encoding_test(e):
for i in list(far.AudioEncoder):
print(f"{i}: {await audio_rec.is_supported_encoder_async(i)}")
async def handle_state_change(e):
print(f"State Changed: {e.data}")
audio_rec = far.AudioRecorder(
audio_encoder=far.AudioEncoder.WAV,
on_state_changed=handle_state_change,
)
page.overlay.append(audio_rec)
await page.update_async()
await page.add_async(
ft.ElevatedButton("Start Audio Recorder", on_click=handle_start_recording),
ft.ElevatedButton("Stop Audio Recorder", on_click=handle_stop_recording),
ft.ElevatedButton("List Devices", on_click=handle_list_devices),
ft.ElevatedButton("Pause Recording", on_click=handle_pause),
ft.ElevatedButton("Resume Recording", on_click=handle_resume),
ft.ElevatedButton("Test AudioEncodings", on_click=handle_audio_encoding_test),
ft.ElevatedButton("Has Permission", on_click=handle_has_permission),
)
ft.app(main)
To reproduce
(env) C:\Users\hello\OneDrive\Desktop\fletnewversionmain>flet --version
0.27.4
Expected behavior
[project]
name = "fletnewversionmain"
version = "0.1.0"
description = ""
readme = "README.md"
requires-python = ">=3.9"
authors = [
{ name = "Flet developer", email = "you@example.com" }
]
dependencies = [
"flet-audio-recorder==0.1.0",
"flet==0.27.4"
]
[tool.flet]
org name in reverse domain name notation, e.g. "com.mycompany".
Combined with project.name to build bundle ID for iOS and Android apps
org = "com.mycompany"
project display name that is used as an app title on Android and iOS home screens,
shown in window titles and about app dialogs on desktop.
product = "fletnewversionmain"
company name to display in about app dialogs
company = "Flet"
copyright text to display in about app dialogs
copyright = "Copyright (C) 2025 by Flet"
[tool.flet.app]
path = "src"
[tool.uv]
dev-dependencies = [
"flet[all]==0.27.4",
]
[tool.poetry]
package-mode = false
[tool.poetry.group.dev.dependencies]
flet = {extras = ["all"], version = "0.27.4"}
Screenshots / Videos
Captures
[Upload media here]
Operating System
Windows
Operating system details
windows 11
Flet version
flet==0.27.4
Regression
No, it isn't
Suggestions
No response
Logs
Logs
(env) C:\Users\hello\OneDrive\Desktop\fletnewversionmain>flet build apk -v
[11:59:14] Run subprocess: ['C:\src\flutter\bin\flutter.BAT', '--version', '--no-version-check', '--suppress-analytics']
[11:59:15] Flutter 3.27.4 installed ✅
Flutter executable: C:\Users\hello\flutter\3.27.4\bin\flutter.bat
Dart executable: C:\Users\hello\flutter\3.27.4\bin\dart.bat
JAVA_HOME points to a JRE. Proceeding to install JDK.
JDK installed at C:\Users\hello\java\17.0.13+11
Configuring Flutter's path to JDK
Run subprocess: ['C:\Users\hello\flutter\3.27.4\bin\flutter.bat', 'config', '--no-version-check', '--suppress-analytics',
'--jdk-dir=C:\Users\hello\java\17.0.13+11']
[11:59:16] Setting "jdk-dir" value to "C:\Users\hello\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\hello\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 ✅
[11:59:23] Created Flutter bootstrap project from gh:flet-dev/flet-build-template with ref "0.27.4" ✅
Run subprocess: ['C:\Users\hello\flutter\3.27.4\bin\dart.bat', 'run', '--suppress-analytics', 'serious_python:main', 'package',
'C:\Users\hello\OneDrive\Desktop\fletnewversionmain\src', '--platform', 'Android', '--requirements', 'flet-audio-recorder==0.1.0,flet==0.27.4', '--exclude',
'build', '--cleanup-packages']
[11:59:44] Running package command
Extra PyPi indexes: [https://pypi.flet.dev]
Creating asset directory: C:\Users\hello\OneDrive\Desktop\fletnewversionmain\build\flutter\app
Created temp directory: C:\Users\hello\AppData\Local\Temp\serious_python_temp401041ed
Copying Python app from C:\Users\hello\OneDrive\Desktop\fletnewversionmain\src to a temp directory
Configured Android/arm64-v8a platform with sitecustomize.py
Installing [flet-audio-recorder==0.1.0, flet==0.27.4] with pip command to C:\Users\hello\OneDrive\Desktop\fletnewversionmain\build\site-packages\arm64-v8a
Downloading Python distributive from
https://github.com/astral-sh/python-build-standalone/releases/download/20250205/cpython-3.12.9+20250205-x86_64-pc-windows-msvc-shared-install_only_stripped.tar.gz to a
build directory
[11:59:51] Extracting Python distributive
[12:00:33] Copying Flutter packages to C:\Users\hello\OneDrive\Desktop\fletnewversionmain\build\flutter-packages-temp
Cleanup installed packages
Configured Android/armeabi-v7a platform with sitecustomize.py
Installing [flet-audio-recorder==0.1.0, flet==0.27.4] with pip command to C:\Users\hello\OneDrive\Desktop\fletnewversionmain\build\site-packages\armeabi-v7a
[12:00:51] Cleanup installed packages
Configured Android/x86_64 platform with sitecustomize.py
Installing [flet-audio-recorder==0.1.0, flet==0.27.4] with pip command to C:\Users\hello\OneDrive\Desktop\fletnewversionmain\build\site-packages\x86_64
[12:01:10] Cleanup installed packages
[12:01:11] Configured Android/x86 platform with sitecustomize.py
Installing [flet-audio-recorder==0.1.0, flet==0.27.4] with pip command to C:\Users\hello\OneDrive\Desktop\fletnewversionmain\build\site-packages\x86
[12:01:28] Cleanup installed packages
[12:01:29] Creating app archive at C:\Users\hello\OneDrive\Desktop\fletnewversionmain\build\flutter\app/app.zip from a temp directory
Writing app archive hash to C:\Users\hello\OneDrive\Desktop\fletnewversionmain\build\flutter\app/app.zip.hash
Deleting temp directory
Packaged Python app ✅
Found Flutter extension at C:\Users\hello\OneDrive\Desktop\fletnewversionmain\build\flutter-packages\flet_audio_recorder
Registered Flutter user extensions ✅
[12:01:34] Found "icon" image at C:\Users\hello\OneDrive\Desktop\fletnewversionmain\src\assets\icon.png
Copying image C:\Users\hello\OneDrive\Desktop\fletnewversionmain\src\assets\icon.png to C:\Users\hello\OneDrive\Desktop\fletnewversionmain\build\flutter\images
Customized app icons ✅
Run subprocess: ['C:\Users\hello\flutter\3.27.4\bin\dart.bat', 'run', '--suppress-analytics', 'flutter_launcher_icons']
[12:01:47] ════════════════════════════════════════════
FLUTTER LAUNCHER ICONS (v0.14.3)
════════════════════════════════════════════
• Creating default icons Android
• Overwriting the default Android launcher icon with a new icon
• Creating adaptive icons Android
[12:01:48] • 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
Creating Icons for Web...
[12:01:49] Creating Icons for Windows...
Creating Icons for MacOS...
✓ Successfully generated launcher icons
[12:01:50] Generated app icons ✅
Found "icon" image at C:\Users\hello\OneDrive\Desktop\fletnewversionmain\src\assets\icon.png
Copying image C:\Users\hello\OneDrive\Desktop\fletnewversionmain\src\assets\icon.png to C:\Users\hello\OneDrive\Desktop\fletnewversionmain\build\flutter\images
Customized app splash images ✅
Run subprocess: ['C:\Users\hello\flutter\3.27.4\bin\dart.bat', 'run', '--suppress-analytics', 'flutter_native_splash:create']
[12:01:54] [Android] Creating default splash images
[Android] Creating dark mode splash images
[Android] Creating default android12splash images
[12:01:55] [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
[iOS] Creating images
[iOS] Creating dark mode images
[12:01:56] [iOS] Updating ios/Runner/Info.plist for status bar hidden/visible
[Web] Creating images
[Web] Creating images
[12:01:57] [Web] Creating background images
[Web] Creating CSS
[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:\\Users\\hello\\flutter\\3.27.4\\bin\\flutter.bat', 'build', 'apk', '--no-version-check', '--suppress-analytics', '--build-name', '0.1.0']
[12:01:58] Resolving dependencies...
[12:01:59] Downloading packages...
[12:02:00] archive 3.6.1 (4.0.4 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)
device_info_plus 11.3.0 (11.3.2 available)
ffi 2.1.3 (2.1.4 available)
file_picker 8.3.7 (9.0.2 available)
fl_chart 0.69.2 (0.70.2 available)
! flet 0.27.2 (overridden) (0.27.4 available)
flutter_lints 2.0.3 (5.0.0 available)
flutter_native_splash 2.4.4 (2.4.5 available)
image 4.3.0 (4.5.3 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)
! record 5.2.1 (overridden)
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 1.1.1 (overridden)
web_socket_channel 2.4.5 (3.0.2 available)
! webview_flutter_android 4.3.2 (overridden)
win32 5.10.1 (5.11.0 available)
win32_registry 1.1.5 (2.1.0 available)
! window_manager 0.4.3 (overridden)
Got dependencies!
1 package is discontinued.
26 packages have newer versions incompatible with dependency constraints.
Try flutter pub outdated for more information.
[12:02:01]
[12:02:37] Running Gradle task 'assembleRelease'...
Gradle build config:
minSdkVersion: 21
targetSdkVersion: 35
versionCode: 1
versionName: 0.1.0
[12:02:55] 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.
[12:03:53] 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.
[12:05:08] C:\Users\hello\OneDrive\Desktop\fletnewversionmain\build\flutter\android\app\src\main\AndroidManifest.xml Error:
uses-sdk:minSdkVersion 21 cannot be smaller than version 23 declared in library [:record_android]
C:\Users\hello\OneDrive\Desktop\fletnewversionmain\build\flutter\build\record_android\intermediates\merged_manifest\release\processReleaseManifest\AndroidManifest.xml
as the library might be using APIs not available in 21
Suggestion: use a compatible library with a minSdk of at most 21,
or increase this project's minSdk version to at least 23,
or use tools:overrideLibrary="com.llfbandit.record" to force usage (may lead to runtime failures)
[12:05:20]
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':app:processReleaseMainManifest'.
> Manifest merger failed : uses-sdk:minSdkVersion 21 cannot be smaller than version 23 declared in library [:record_android]
C:\Users\hello\OneDrive\Desktop\fletnewversionmain\build\flutter\build\record_android\intermediates\merged_manifest\release\processReleaseManifest\AndroidManifest.xml
as the library might be using APIs not available in 21
Suggestion: use a compatible library with a minSdk of at most 21,
or increase this project's minSdk version to at least 23,
or use tools:overrideLibrary="com.llfbandit.record" to force usage (may lead to runtime failures)
* 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.
[12:05:21]
BUILD FAILED in 3m 18s
Running Gradle task 'assembleRelease'... 199.2s
┌─ Flutter Fix ─────────────────────────────────────────────────────────────────────────────────┐
│ The plugin record_android requires a higher Android SDK version. │
│ Fix this issue by adding the following to the file │
│ C:\Users\hello\OneDrive\Desktop\fletnewversionmain\build\flutter\android\app\build.gradle: │
│ android { │
│ defaultConfig { │
│ minSdkVersion 23 │
│ } │
│ } │
│ │
│ Following this change, your app will not be available to users running Android SDKs below 23. │
│ Consider searching for a version of this plugin that supports these lower versions of the │
│ Android SDK instead. │
│ For more information, see: https://flutter.dev/to/review-gradle-config │
└───────────────────────────────────────────────────────────────────────────────────────────────┘
Gradle task assembleRelease failed with exit code 1
<_io.TextIOWrapper name=4 encoding='utf-8'>
Run subprocess: ['C:\\Users\\hello\\flutter\\3.27.4\\bin\\flutter.bat', 'doctor', '--no-version-check', '--suppress-analytics']
[12:05:27] Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, 3.27.4, on Microsoft Windows [Version 10.0.26100.3194], locale en-IN)
[√] 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 17.11.5)
[√] Android Studio (version 2024.2)
[√] VS Code (version 1.97.2)
[√] Connected device (3 available)
[√] Network resources
• No issues found!
╭────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
│ Error building Flet app - see the log of failed command above. │
Additional details
No response