Missing File Extension When Picking Files from Google Drive on Android #1919
Description
Before creating an issue, make sure that you are on the latest file_picker version and that there aren't already any similar opened inssues. Also, check if it isn't described on the Wiki, specially on Troubleshooting page.
Also, sometimes a simple flutter clean and flutter build again with latest file_picker version, may end up by fixing cached issues, so I encourage you to first do so.
Describe the bug
When selecting files directly from Google Drive on Android using the file_picker package, the file extension information is missing from the PlatformFile result. The extension field contains only the filename without the actual file extension type.
Platform
- Android
- iOS
- Web
- Desktop
Platform OS version
Android - 16
How are you picking?
final result = await FilePicker.platform.pickFiles(
type: FileType.custom,
allowedExtensions: allowedFileExtensionTypes,
allowMultiple: true,
);
Details to reproduce the issue
- Open the file picker in the Android app using
FilePicker.platform.pickFiles() - Navigate to the Google Drive storage location
- Select a file that is stored directly in Google Drive (not synced locally) or rename the uploaded file and manually remove the extension
- Examine the
PlatformFileresult
Error Log
PlatformFile(
bytes: null,
extension: "document_2_Completed", // ❌ Expected: "pdf"
hashCode: 703330730,
identifier: "content://com.google.android.apps.docs.storage/document/abc...",
name: "document_2_Completed", // ❌ Expected: "document_2_Completed.pdf"
path: "/data/user/0/com.boldsign.dev/cache/file_picker/1765200714574/...",
readStream: null,
size: 223765,
xFile: XFile
)
Screenshots and/or video
If applicable, add screenshots or video to help explain your problem.
Flutter Version details
[√] Flutter (Channel stable, 3.38.1, on Microsoft Windows [Version 10.0.26100.7171], locale en-US) [428ms]
• Flutter version 3.38.1 on channel stable at D:\Flutter\flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision b45fa18946 (4 weeks ago), 2025-11-12 22:09:06 -0600
• Engine revision b5990e5ccc
• Dart version 3.10.0
• DevTools version 2.51.1
• Feature flags: enable-web, enable-linux-desktop, enable-macos-desktop, enable-windows-desktop, enable-android, enable-ios,
cli-animations, enable-native-assets, omit-legacy-version-file, enable-lldb-debugging
[√] Windows Version (Windows 11 or higher, 24H2, 2009) [2.8s]
[√] Android toolchain - develop for Android devices (Android SDK version 36.0.0) [5.7s]
• Android SDK at C:\Users\SasikumarChinnasamy\AppData\Local\Android\sdk
• Emulator version 35.5.10.0 (build_id 13402964) (CL:N/A)
• Platform android-36, build-tools 36.0.0
• Java binary at: C:\Program Files\Android\Android Studio\jbr\bin\java
This is the JDK bundled with the latest Android Studio installation on this machine.
To manually set the JDK path, use: flutter config --jdk-dir="path/to/jdk".
• Java version OpenJDK Runtime Environment (build 21.0.6+-13368085-b895.109)
• All Android licenses accepted.
[√] Chrome - develop for the web [27ms]
• Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe
[X] Visual Studio - develop Windows apps [25ms]
X Visual Studio not installed; this is necessary to develop Windows apps.
Download at https://visualstudio.microsoft.com/downloads/.
Please install the "Desktop development with C++" workload, including all of its default components
[√] Connected device (4 available) [893ms]
• SM E156B (mobile) • 192.168.31.34:37665 • android-arm64 • Android 16 (API 36)
• Windows (desktop) • windows • windows-x64 • Microsoft Windows [Version 10.0.26100.7171]
• Chrome (web) • chrome • web-javascript • Google Chrome 139.0.7258.139
• Edge (web) • edge • web-javascript • Microsoft Edge 142.0.3595.90
[√] Network resources [1,062ms]
• All expected network resources are available.
Additional context
Users must manually rename the file in Google Drive and remove the extension before selecting it through the file picker. [Select the file without extension type]
