Hi i am not able to pick file app get crashed when i select any file.

I an using android device.

Issue printed in console

E/AndroidRuntime( 1459): java.lang.NullPointerException: Attempt to invoke virtual method 'boolean java.lang.String.equals(java.lang.Object)' on a null object reference E/AndroidRuntime( 1459): at com.mr.flutter.plugin.filepicker.FilePickerDelegate$2.run(FilePickerDelegate.java:92) E/AndroidRuntime( 1459): at java.lang.Thread.run(Thread.java:919)

My project is migrated to AndroidX and worked earlier with Flutter version 1.12.13+hotfix.7 and FilePicker version 1.4.3+2

Flutter Doctor output:

[√] Flutter (Channel stable, v1.12.13+hotfix.9, on Microsoft Windows [Version 10.0.18363.657], locale en-US)
    • Flutter version 1.12.13+hotfix.9 at C:\flutter
    • Framework revision f139b11009 (4 days ago), 2020-03-30 13:57:30 -0700
    • Engine revision af51afceb8
    • Dart version 2.7.2


[√] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
    • Android SDK at C:\Users\BLiyanage\AppData\Local\Android\sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-29, build-tools 29.0.3
    • ANDROID_HOME = C:\Users\BLiyanage\AppData\Local\Android\sdk
    • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 1.8.0_212-release-1586-b04)
    • All Android licenses accepted.

[√] Android Studio (version 3.6)
    • Android Studio at C:\Program Files\Android\Android Studio
    • Flutter plugin version 43.0.2
    • Dart plugin version 192.7761
    • Java version OpenJDK Runtime Environment (build 1.8.0_212-release-1586-b04)

[√] IntelliJ IDEA Community Edition (version 2019.3)
    • IntelliJ at C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2019.3
    • Flutter plugin version 44.0.3
    • Dart plugin version 193.6494.35

[√] VS Code, 32-bit edition
    • VS Code at C:\Program Files (x86)\Microsoft VS Code
    • Flutter extension version 3.4.1

[√] VS Code, 64-bit edition (version 1.42.1)
    • VS Code at C:\Program Files\Microsoft VS Code
    • Flutter extension version 3.4.1

[!] Connected device
    ! No devices available

! Doctor found issues in 1 category.

Error log:

Deprecated Gradle features were used in this build, making it incompatible with Gradle 6.0.
Use '--warning-mode all' to show the individual deprecation warnings.
See https://docs.gradle.org/5.1.1/userguide/command_line_interface.html#sec:command_line_warnings
17 actionable tasks: 2 executed, 15 up-to-date

C:\Users\BLiyanage\AppData\Roaming\Pub\Cache\hosted\pub.dartlang.org\file_picker-1.5.1\android\src\main\java\com\mr\flutter\plugin\filepicker\FilePickerPlugin.java:12: error: cannot find
 symbol
import androidx.lifecycle.DefaultLifecycleObserver;
                         ^
  symbol:   class DefaultLifecycleObserver
  location: package androidx.lifecycle
C:\Users\BLiyanage\AppData\Roaming\Pub\Cache\hosted\pub.dartlang.org\file_picker-1.5.1\android\src\main\java\com\mr\flutter\plugin\filepicker\FilePickerPlugin.java:19: error: cannot find
 symbol
import io.flutter.embedding.engine.plugins.lifecycle.FlutterLifecycleAdapter;
                                                    ^
  symbol:   class FlutterLifecycleAdapter
  location: package io.flutter.embedding.engine.plugins.lifecycle
C:\Users\BLiyanage\AppData\Roaming\Pub\Cache\hosted\pub.dartlang.org\file_picker-1.5.1\android\src\main\java\com\mr\flutter\plugin\filepicker\FilePickerPlugin.java:35: error: cannot find
 symbol
            implements Application.ActivityLifecycleCallbacks, DefaultLifecycleObserver {
                                                               ^
  symbol:   class DefaultLifecycleObserver
  location: class FilePickerPlugin
C:\Users\BLiyanage\AppData\Roaming\Pub\Cache\hosted\pub.dartlang.org\file_picker-1.5.1\android\src\main\java\com\mr\flutter\plugin\filepicker\FilePickerPlugin.java:42: error: method does
 not override or implement a method from a supertype
        @Override
        ^
C:\Users\BLiyanage\AppData\Roaming\Pub\Cache\hosted\pub.dartlang.org\file_picker-1.5.1\android\src\main\java\com\mr\flutter\plugin\filepicker\FilePickerPlugin.java:46: error: method does
 not override or implement a method from a supertype
        @Override
        ^
C:\Users\BLiyanage\AppData\Roaming\Pub\Cache\hosted\pub.dartlang.org\file_picker-1.5.1\android\src\main\java\com\mr\flutter\plugin\filepicker\FilePickerPlugin.java:50: error: method does
 not override or implement a method from a supertype
        @Override
        ^
C:\Users\BLiyanage\AppData\Roaming\Pub\Cache\hosted\pub.dartlang.org\file_picker-1.5.1\android\src\main\java\com\mr\flutter\plugin\filepicker\FilePickerPlugin.java:54: error: method does
 not override or implement a method from a supertype
        @Override
        ^
C:\Users\BLiyanage\AppData\Roaming\Pub\Cache\hosted\pub.dartlang.org\file_picker-1.5.1\android\src\main\java\com\mr\flutter\plugin\filepicker\FilePickerPlugin.java:58: error: method does
 not override or implement a method from a supertype
        @Override
        ^
C:\Users\BLiyanage\AppData\Roaming\Pub\Cache\hosted\pub.dartlang.org\file_picker-1.5.1\android\src\main\java\com\mr\flutter\plugin\filepicker\FilePickerPlugin.java:63: error: method does
 not override or implement a method from a supertype
        @Override
        ^
C:\Users\BLiyanage\AppData\Roaming\Pub\Cache\hosted\pub.dartlang.org\file_picker-1.5.1\android\src\main\java\com\mr\flutter\plugin\filepicker\FilePickerPlugin.java:253: error: cannot fin
d symbol
            this.lifecycle = FlutterLifecycleAdapter.getActivityLifecycle(activityBinding);
                             ^
  symbol:   variable FlutterLifecycleAdapter
  location: class FilePickerPlugin
C:\Users\BLiyanage\AppData\Roaming\Pub\Cache\hosted\pub.dartlang.org\file_picker-1.5.1\android\src\main\java\com\mr\flutter\plugin\filepicker\FilePickerPlugin.java:254: error: incompatib
le types: FilePickerPlugin.LifeCycleObserver cannot be converted to LifecycleObserver
            this.lifecycle.addObserver(this.observer);
                                           ^
C:\Users\BLiyanage\AppData\Roaming\Pub\Cache\hosted\pub.dartlang.org\file_picker-1.5.1\android\src\main\java\com\mr\flutter\plugin\filepicker\FilePickerPlugin.java:262: error: incompatib
le types: FilePickerPlugin.LifeCycleObserver cannot be converted to LifecycleObserver
        this.lifecycle.removeObserver(this.observer);
                                          ^
Note: C:\Users\BLiyanage\AppData\Roaming\Pub\Cache\hosted\pub.dartlang.org\file_picker-1.5.1\android\src\main\java\com\mr\flutter\plugin\filepicker\FilePickerDelegate.java uses or overri
des a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some messages have been simplified; recompile with -Xdiags:verbose to get full output
12 errors

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':compileReleaseJavaWithJavac'.
> 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 1m 51s


The plugin file_picker could not be built due to the issue above.

Suggestions Box

Please, if you have any suggestion add it here and I'll try to keep track of those, as well we can try to discuss which will make sense to implement or not in the package.

The list order is from the most likely to be added to the less.

To-do list

• [ ] Support Flutter desktop (#85) - Currently implemented with go-flutter as an alternative 🎉
• [x] Allow multiple extensions at once (#68)
• [ ] Get an URL from remote files (eg. GDrive) (#63)
• [ ] Picking directory (although this is not an easy task in iOS) (#23)
• [ ] Support Flutter Web (#84) (WIP)
• [ ] Support picking videos and photos at once on iOS (#181)

Describe the bug cf. https://github.com/flutter/flutter/issues/65995 I created a brand new project from scratch and I still get the following message:

Picker Unavailable
There was an error while preparing the picker.
Please try later again

Issue details

1. Android Studio 4.0.1
2. file_picker: ^2.0.1+1
3. Xcode 12 / iOS 14
4. tried on iOS Simulator iPhone 8 Plus, iPhone 11 Pro Max and iPad Pro (12.9-inch) - 4th generation
5. same issue with FilePicker.platform.pickFiles(type: FileType.image) and FilePicker.platform.pickFiles(type: FileType.image, allowMultiple: true)
6. A simple app from scratch

Screenshots and/or video

Flutter Version details

[✓] Flutter (Channel stable, 1.20.4, on Mac OS X 10.15.5 19F101, locale fr-FR)
    • Flutter version 1.20.4 at /Users/fabricefontaine/development/flutter
    • Framework revision fba99f6cf9 (9 days ago), 2020-09-14 15:32:52 -0700
    • Engine revision d1bc06f032
    • Dart version 2.9.2

 
[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.2)
    • Android SDK at /Users/fabricefontaine/Library/Android/sdk
    • Platform android-30, build-tools 30.0.2
    • Java binary at: /Applications/Android
      Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build
      1.8.0_242-release-1644-b3-6222593)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 12.0)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 12.0, Build version 12A7209
    • CocoaPods version 1.9.3

[✓] Android Studio (version 4.0)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin version 49.0.2
    • Dart plugin version 193.7547
    • Java version OpenJDK Runtime Environment (build
      1.8.0_242-release-1644-b3-6222593)

[✓] Connected device (1 available)
    • iPhone 8 Plus (mobile) • 755F3CBA-6DA9-4C91-B05A-2CD42DF86E65 • ios •
      com.apple.CoreSimulator.SimRuntime.iOS-14-0 (simulator)

• No issues found!

Motivation

Currently web support is one of most requested features for file_picker.

Have in mind that features are still being added and you need to be on Flutter branches that currently have web support as well (eg. beta, dev, master).

Update: early implementation of this is already available with file_picker_web

Hi, after upgrading to Xcode 13.3 and iOS 15.4,

• no issues encountered while debugging app on iPhone.
• no issues building Android appbundle
• however, encountered the below when building iOS app flutter build ipa --obfuscate --split-debug-info=debug-info
• have tried pod deintegrate && rm Podfile.lock && pod install> flutter clean > rm -rf ~/Library/Developer/Xcode/DerivedData then rebuild, same issue encountered.
• I tried disabling file_picker in pubspec.yaml, Xcode was able to build archive successfully.

Appreciate if some light can be shed on this issue. Thanks!

SwiftCodeGeneration normal arm64 (in target 'DKImagePickerController' from project 'Pods')
    cd /Users/myname/Projects/apps/my_app_name/ios/Pods
    /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -c -primary-file /Users/myname/Library/Developer/Xcode/DerivedData/Runner-faokyziihkhtwugbkjwfnzeicqgb/Build/Intermediates.noindex/ArchiveIntermediates/Runner/IntermediateBuildFilesPath/Pods.build/Release-iphoneos/DKImagePickerController.build/Objects-normal/arm64/DKPopoverViewController.bc -embed-bitcode -target arm64-apple-ios12.0 -Xllvm -aarch64-use-tbi -O -disable-llvm-optzns -module-name DKImagePickerController -o /Users/myname/Library/Developer/Xcode/DerivedData/Runner-faokyziihkhtwugbkjwfnzeicqgb/Build/Intermediates.noindex/ArchiveIntermediates/Runner/IntermediateBuildFilesPath/Pods.build/Release-iphoneos/DKImagePickerController.build/Objects-normal/arm64/DKPopoverViewController.o

Please submit a bug report (https://swift.org/contributing/#reporting-bugs) and include the project and the crash backtrace.
Stack dump:
0.	Program arguments: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -c -primary-file /Users/myname/Library/Developer/Xcode/DerivedData/Runner-faokyziihkhtwugbkjwfnzeicqgb/Build/Intermediates.noindex/ArchiveIntermediates/Runner/IntermediateBuildFilesPath/Pods.build/Release-iphoneos/DKImagePickerController.build/Objects-normal/arm64/DKPopoverViewController.bc -embed-bitcode -target arm64-apple-ios12.0 -Xllvm -aarch64-use-tbi -O -disable-llvm-optzns -module-name DKImagePickerController -o /Users/myname/Library/Developer/Xcode/DerivedData/Runner-faokyziihkhtwugbkjwfnzeicqgb/Build/Intermediates.noindex/ArchiveIntermediates/Runner/IntermediateBuildFilesPath/Pods.build/Release-iphoneos/DKImagePickerController.build/Objects-normal/arm64/DKPopoverViewController.o
1.	Apple Swift version 5.6 (swiftlang-5.6.0.323.62 clang-1316.0.20.8)
2.	Compiling with the current language version
3.	Running pass 'Function Pass Manager' on module '/Users/myname/Library/Developer/Xcode/DerivedData/Runner-faokyziihkhtwugbkjwfnzeicqgb/Build/Intermediates.noindex/ArchiveIntermediates/Runner/IntermediateBuildFilesPath/Pods.build/Release-iphoneos/DKImagePickerController.build/Objects-normal/arm64/DKPopoverViewController.bc'.
4.	Running pass 'ObjC ARC contraction' on function '@UI_USER_INTERFACE_IDIOM'
Stack dump without symbol names (ensure you have llvm-symbolizer in your PATH or set the environment var `LLVM_SYMBOLIZER_PATH` to point to it):
0  swift-frontend           0x000000010503ef88 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) + 56
1  swift-frontend           0x000000010503df9c llvm::sys::RunSignalHandlers() + 112
2  swift-frontend           0x000000010503f618 SignalHandler(int) + 344
3  libsystem_platform.dylib 0x000000019e6914c4 _sigtramp + 56
4  swift-frontend           0x0000000102fbce8c llvm::objcarc::BundledRetainClaimRVs::insertRVCallWithColors(llvm::Instruction*, llvm::CallBase*, llvm::DenseMap<llvm::BasicBlock*, llvm::TinyPtrVector<llvm::BasicBlock*>, llvm::DenseMapInfo<llvm::BasicBlock*>, llvm::detail::DenseMapPair<llvm::BasicBlock*, llvm::TinyPtrVector<llvm::BasicBlock*> > > const&) + 64
5  swift-frontend           0x0000000102fcd878 (anonymous namespace)::ObjCARCContract::run(llvm::Function&, llvm::AAResults*, llvm::DominatorTree*) + 1024
6  swift-frontend           0x0000000104db2e24 llvm::FPPassManager::runOnFunction(llvm::Function&) + 1292
7  swift-frontend           0x0000000104db938c llvm::FPPassManager::runOnModule(llvm::Module&) + 60
8  swift-frontend           0x0000000104db35a8 llvm::legacy::PassManagerImpl::run(llvm::Module&) + 1088
9  swift-frontend           0x0000000100d7eee8 swift::performLLVMOptimizations(swift::IRGenOptions const&, llvm::Module*, llvm::TargetMachine*) + 3376
10 swift-frontend           0x0000000100d7fe28 swift::performLLVM(swift::IRGenOptions const&, swift::DiagnosticEngine&, llvm::sys::SmartMutex<false>*, llvm::GlobalVariable*, llvm::Module*, llvm::TargetMachine*, llvm::StringRef, swift::UnifiedStatsReporter*) + 2440
11 swift-frontend           0x0000000100d88364 swift::performLLVM(swift::IRGenOptions const&, swift::ASTContext&, llvm::Module*, llvm::StringRef) + 180
12 swift-frontend           0x00000001008e0ea0 swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 6976
13 swift-frontend           0x00000001008a8130 swift::mainEntry(int, char const**) + 808
14 dyld                     0x00000001078a1088 start + 516
error: Segmentation fault: 11 (in target 'DKImagePickerController' from project 'Pods')

[✓] Flutter (Channel stable, 2.10.3, on macOS 12.3 21E230 darwin-arm, locale
    en-SG)
    • Flutter version 2.10.3 at /Users/myname/Projects/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 7e9793dee1 (13 days 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 30.0.3)
    • Android SDK at /Users/myname/Library/Android/sdk
    • Platform android-31, build-tools 30.0.3
    • Java binary at: /Applications/Android Studio.app/Contents/jre/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 11.0.11+0-b60-7772763)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 13.3)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • CocoaPods version 1.11.2

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2021.1)
    • Android Studio at /Applications/Android Studio.app/Contents
    • 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 11.0.11+0-b60-7772763)

[✓] VS Code (version 1.65.2)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.36.0

[✓] Connected device (2 available)
    • myiPhone (mobile) • 00008110-001938481E04801E • ios            • iOS 15.4 19E241
    • Chrome (web)     • chrome                    • web-javascript • Google Chrome 99.0.4844.51

[✓] HTTP Host Availability
    • All required HTTP hosts are available

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 A clear and concise description of what the bug is. If the issue happens to be on Android, please make sure that it also happens with a different device/simulator and/or version.

Platform

• [] Android
• [] iOS
• [] Web
• [] Desktop (Go)

Platform OS version What version did it happen?

How are you picking?

Please, post the snippet here

Details to reproduce the issue Provide all the details to reproduce the issue.

Error Log Please, post the full console log of your issue, if applicable.

Screenshots and/or video If applicable, add screenshots or video to help explain your problem.

Flutter Version details Please, post the output of your flutter doctor -v, preferably, while running the issued device/simulator.

Additional context Add any other context about the problem here.

Getting, Unhandled Exception: FileSystemException: Cannot retrieve length of file, path = '/private/var/mobile/Containers/Data/Application/0C1997E5-5243-494E-85EA-830E3248CC97/tmp/com.vassar.bluis-Inbox/https:%2Ffoodlicensing.fssai.gov.in%2FREG%2FRG_ViewReceipt.aspx?ReqID=68198366.pdf' (OS Error: No such file or directory, errno = 2)

in Android its working fine but in iOS 13.4 real device getting above exception

Issue details

1. Platform - iOS
2. Platform OS version - 13.4
3. File type (filter) — pdf
4. Detailed steps to reproduce Working fine in android, select any pdf file and try to upload to server in iOS real device 13.4

Error Log

2020-04-29 15:56:04.991427+0530 Runner[4358:1416983] [VERBOSE-2:ui_dart_state.cc(157)] Unhandled Exception: FileSystemException: Cannot retrieve length of file, path = '/private/var/mobile/Containers/Data/Application/0C1997E5-5243-494E-85EA-830E3248CC97/tmp/com.vassar.bluis-Inbox/https:%2Ffoodlicensing.fssai.gov.in%2FREG%2FRG_ViewReceipt.aspx?ReqID=68198366.pdf' (OS Error: No such file or directory, errno = 2) #0 _File.length. (dart:io/file_impl.dart:376:9) #1 _rootRunUnary (dart:async/zone.dart:1134:38) #2 _CustomZone.runUnary (dart:async/zone.dart:1031:19) #3 _FutureListener.handleValue (dart:async/future_impl.dart:139:18) #4 Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:680:45) #5 Future._propagateToListeners (dart:async/future_impl.dart:709:32) #6 Future._completeWithValue (dart:async/future_impl.dart:524:5) #7 Future._asyncComplete. (dart:async/future_impl.dart:554:7) #8 _rootRun (dart:async/zone.dart:1126:13) #9 _CustomZone.run (dart:async/zone.dart:1023:19) #10 _CustomZone.runGuarded (dart:async/zone.dart:925:7) #11 _CustomZone.bindCallbackGuarded. (dart:async/zone.dart:965:23) #12 _microtaskLoop (dart:async/schedule_microtask.dart:43:21) #13 _startMicrotaskLoop (dart:async/schedule_microtask.dart:52:5)

Flutter Version details [✓] Flutter (Channel stable, v1.12.13+hotfix.9, on Mac OS X 10.15.4 19E287, locale en-IN) • Flutter version 1.12.13+hotfix.9 at /Users/teja/flutter_dev/flutter • Framework revision f139b11009 (4 weeks ago), 2020-03-30 13:57:30 -0700 • Engine revision af51afceb8 • Dart version 2.7.2

[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.2) • Android SDK at /Users/teja/Library/Android/sdk • Android NDK location not configured (optional; useful for native profiling support) • Platform android-29, build-tools 29.0.2 • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java • Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b49-5587405) • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 11.4.1) • Xcode at /Applications/Xcode.app/Contents/Developer • Xcode 11.4.1, Build version 11E503a • CocoaPods version 1.9.1

[✓] Android Studio (version 3.5) • Android Studio at /Applications/Android Studio.app/Contents • Flutter plugin version 42.1.1 • Dart plugin version 191.8593 • Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b49-5587405)

[✓] Connected device (1 available) • Shahnawaz’s iphone • d59a055eb9bbddc9be958142d9c484e3c45bbf2f • ios • iOS 13.4.1

• No issues found!

Describe the bug My Flutter app is not launching on Android when building in release mode after adding file_picker dependency in pubspec.yaml. When I run debug build, everything works OK.

Issue details

1. Platform: Android
2. Platform OS version: tested and reproduced on 7-11 (mostly on Android 11 on Pixel 3a).
3. File type (filter) -
4. Detailed steps to reproduce:

1. Make a clear release build of the app with flutter clean and flutter build apk.
2. Send the file <PROJECT_DIR>/build/app/outputs/flutter-apk/app-release.apk to the device and install it.
3. Run the app. Everything works as expected, I'm able to interact with my app.
4. Add file_picker: ^2.1.4,
5. Run flutter pub get, flutter clean and then flutter build apk.
6. Send the new file <PROJECT_DIR>/build/app/outputs/flutter-apk/app-release.apk to the device and install it.
7. Run the app. I can see Android's splash screen, however, after it closes, I'm stuck on a black screen and Flutter app does not load.
8. Remove the app from the device. Try running debug build. The app works as expected, Flutter app launched once the Android splash was closed.

Error Log Nothing to paste here :( When I try to attach Flutter debugger from Android studio to the opened app on the step 7), the console just keeps showing the message "Waiting for a connection from Flutter on Pixel 3a...".

Screenshots and/or video If applicable, add screenshots or video to help explain your problem.

Flutter Version details flutter doctor -v: [✓] Flutter (Channel stable, 1.22.5, on Mac OS X 10.15.7 19H2 darwin-x64, locale en-GB) • Flutter version 1.22.5 at /Users/yurii.dvornyk/Documents/flutter • Framework revision 7891006299 (4 days ago), 2020-12-10 11:54:40 -0800 • Engine revision ae90085a84 • Dart version 2.10.4

[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.2) • Android SDK at /Users/yurii.dvornyk/Library/Android/sdk • Platform android-30, build-tools 30.0.2 • ANDROID_HOME = /Users/yurii.dvornyk/Library/Android/sdk • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6915495) • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 12.2) • Xcode at /Applications/Xcode.app/Contents/Developer • Xcode 12.2, Build version 12B45b • CocoaPods version 1.10.0

[!] Android Studio (version 4.1) • Android Studio at /Applications/Android Studio.app/Contents ✗ Flutter plugin not installed; this adds Flutter specific functionality. (Plugin is actually installed; this is Flutter's known issue) ✗ Dart plugin not installed; this adds Dart specific functionality. (Plugin is actually installed; this is Flutter's known issue) • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6915495)

[✓] VS Code (version 1.52.0) • VS Code at /Applications/Visual Studio Code.app/Contents • Flutter extension version 3.17.0

[!] Connected device ! No devices available

Additional context Posting the whole pubspec.yaml content in case it could help.

name: <PROJECT_NAME>
description: <PROJECT_DESCRIPTION>
publish_to: 'none'
version: 1.0.0+1
environment:
  sdk: ">=2.7.0 <3.0.0"

dependencies:
  flutter:
    sdk: flutter

  cupertino_icons: ^0.1.3

  # Firebase
  firebase_core: ^0.5.0+1
  firebase_crashlytics: ^0.2.1+1
  firebase_analytics: ^6.0.2

  # UI libraries
  flip_card: ^0.4.4
  flutter_svg: ^0.19.1
  flutter_markdown: ^0.5.1
  visibility_detector: ^0.1.5

  # Localization
  intl: ^0.16.1
  flutter_localizations:
    sdk: flutter
  
  # Networking
  http: ^0.12.2

  # Database
  moor: ^3.4.0
  sqlite3_flutter_libs:

  # Paths, Urls, Files
  path_provider: ^1.6.24
  path: ^1.7.0
  url_launcher: ^5.7.10
  file_picker: ^2.1.4
  mime: ^0.9.7

  # Download/Upload
  flutter_uploader: ^2.0.0-beta.3

  # Photo/video
  camera: ^0.5.8+11
  video_player: ^1.0.1
  video_thumbnail: ^0.2.5
  flutter_ffmpeg: ^0.3.0

  # Work with devices
  device_info: ^1.0.0
  wakelock: ^0.2.1+1

dev_dependencies:
  flutter_test:
    sdk: flutter
  
  # Database
  moor_generator: ^3.4.0
  build_runner: ^1.10.4

flutter:
  uses-material-design: true

  assets:
    - assets/images/

  fonts:
    <FONTS_USED_IN_THE_PROJECT>

flutter_intl:
  enabled: true

I get a platform exception trying to use this in a flutter app deployed to MacOS, but it works on android and iOS. Are there any plans to extend support to native mac / desktop?

Thanks!

I don't understand what this can and can't do.

Can it be used to write to files? I'm getting errors? You say it returns absolute file paths, but that does not look to be true. It seems to copy the filename only, not the path, and put it in private external storage, especially, cache.

So this is not really a file picker. It only copies files temporarily to cache?

Describe the bug There is an issue with dismissing File picker modal on iOS with drag down gesture. When opening file picker multiple times the app can crash.

Platform

• [ ] Android
• [x] iOS
• [ ] Web
• [ ] Desktop

Platform OS version 16.1

How are you picking?

  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: const Text('file_picker issue')),
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: <Widget>[
              ElevatedButton(
                  onPressed: () {
                    try {
                      FilePicker.platform.pickFiles();
                    } on PlatformException catch (_) {}
                  },
                  child: const Text('pick file')),
            ],
          ),
        ),
      ),
    );
  }

Details to reproduce the issue Using the snippet above I'm quickly opening File picker and closing it using drag down gesture to dismiss modal (issue is not happening if I'm using Cancel button). After few times I start to get Platform Exceptions:

MethodChannelFilePicker] Platform exception: PlatformException(multiple_request, Cancelled by a second request, null, null)

This is fine and can be treated as expected. But after few more tries the app crashes.

Error Log Crash log:

    frame #0: 0x0000000103828840 file_picker`-[FilePickerPlugin documentPickerWasCancelled:](self=0x0000000282cf1450, _cmd="documentPickerWasCancelled:", controller=0x000000013a205170) at FilePickerPlugin.m:614:5
   611 	#ifdef PICKER_DOCUMENT
   612 	- (void)documentPickerWasCancelled:(UIDocumentPickerViewController *)controller {
   613 	    Log(@"FilePicker canceled");
-> 614 	    _result(nil);
    	    ^
   615 	    _result = nil;
   616 	    [controller dismissViewControllerAnimated:YES completion:NULL];
   617 	}
Target 0: (Runner) stopped.

Screenshots and/or video Exception caught in Xcode:

Additional context It seems that in delegate method _result can be null. Probably it is an easy fix in FilePickerPlugin.m:

#ifdef PICKER_AUDIO
- (void)mediaPickerDidCancel:(MPMediaPickerController *)controller {
    Log(@"FilePicker canceled");
    if(_result != nil) {
        _result(nil);
        _result = nil;
    }
    [controller dismissViewControllerAnimated:YES completion:NULL];
}
#endif // PICKER_AUDIO

#ifdef PICKER_DOCUMENT
- (void)documentPickerWasCancelled:(UIDocumentPickerViewController *)controller {
    Log(@"FilePicker canceled");
    if(_result != nil) {
        _result(nil);
        _result = nil;
    }
    [controller dismissViewControllerAnimated:YES completion:NULL];
}
#endif // PICKER_DOCUMENT

#ifdef PICKER_MEDIA
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
    Log(@"FilePicker canceled");
    if(_result != nil) {
        _result(nil);
        _result = nil;
    }
    [picker dismissViewControllerAnimated:YES completion:NULL];
}
#endif

I used the latest version of the file_picker plugin (v5.2.4). But this plugin used the deprecated version of the open_file plugin (v2.0.1). As result, I can't use the latest version of the open_file plugin in my app.

Error Log

Because no versions of file_picker match >5.2.4 <6.0.0 and file_picker 5.2.4 depends on ffi ^2.0.1, file_picker ^5.2.4 requires ffi ^2.0.1.
Because open_file >=3.1.0 depends on ffi ^1.0.0 and open_file >=3.0.0 <3.1.0 depends on ffi ^0.1.3, open_file >=3.0.0 requires ffi ^0.1.3 or ^1.0.0.
Thus, file_picker ^5.2.4 is incompatible with open_file >=3.0.0.
So, because picker_example depends on both file_picker ^5.2.4 and open_file ^3.0.1, version solving failed.

Describe the bug In my company we are using the file_picker plugin to allow the users load pdf files into a chat. We are using the following code to reach that:

var pdf = await FilePicker.platform.pickFiles( type: FileType.custom, allowedExtensions: ['pdf']);

However we saw that with that code, the users can select media files too (photos, videos, etc). In some android versions exist a "hamburger menu" that allows the user selects other folder, like photos folder, where the user can choose wherever media file.

I was testing with the example code that was provided by file_picker devs, but I saw the same problem:

Platform

• [X] Android
• [ ] iOS
• [ ] Web
• [ ] Desktop

Platform OS version I Tested the app with android 9.0 and android 12.0

Details to reproduce the issue

1. Use the same following code to select only pdf files

var pdf = await FilePicker.platform.pickFiles( type: FileType.custom, allowedExtensions: ['pdf']);

2. Then, you will see a screen that allow select the media files. Search a menu that allows you change the current folder

3. Choose for example the photos folder

4. Select wherever media file

Describe the bug Sporadically the timeout in the following function is reached in a WebApp when selecting files from slow networks (VPN connection, ...) Thus it looks like the dialog is cancelled even files are selected. Since this happens sporadically I think I am sometimes slightly above the 500ms, Of course the timeout can be extended in src code thus the selection will work with the drawback that the cancel detection takes longer.

This is the code part causing the issue

// This listener is called before the input changed event,
  // and the `uploadInput.files` value is still null
  // Wait for results from js to dart
  Future.delayed(Duration(milliseconds: 500)).then((value) {
    if (!changeEventTriggered) {
      changeEventTriggered = true;
      filesCompleter.complete(null);
    }
  });
}`

Solutions: Seperate cancel from file picking. If files are picked wait until data is completed. Provide the timeout value as parameter of the pickFiles() function

Platform

• [ ] Android
• [ ] iOS
• [x] Web
• [ ] Desktop

Version file_picker 5.2.4

file_picker: ^5.2.4

Describe the bug File Picker dialog works when started from IntelliJ (device: Chrome (Web)) but not as a web app

Platform

• [ ] Android
• [ ] iOS
• [x] Web
• [ ] Desktop

Platform OS version Latest Chrome on Windows, Edge on Windows, Chrome on Android

How are you picking?

final result = await FilePicker.platform.pickFiles(type: FileType.any, allowMultiple: false);

Details to reproduce the issue Just the above code in a small web app

Flutter Version details

[√] Flutter (Channel stable, 3.3.10, on Microsoft Windows [Version 10.0.19044.2251], locale en-US) • Flutter version 3.3.10 on channel stable at C:\Users\mikha\Documents\flutter • Upstream repository https://github.com/flutter/flutter.git • Framework revision 135454af32 (2 weeks ago), 2022-12-15 07:36:55 -0800 • Engine revision 3316dd8728 • Dart version 2.18.6 • DevTools version 2.15.0

[X] Android toolchain - develop for Android devices • Android SDK at C:\Users\mikha\AppData\Local\Android\sdk X cmdline-tools component is missing Run path/to/sdkmanager --install "cmdline-tools;latest" See https://developer.android.com/studio/command-line for more details.

[√] Chrome - develop for the web • Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe

[√] Visual Studio - develop for Windows (Visual Studio Community 2022 17.1.2) • Visual Studio at C:\Program Files\Microsoft Visual Studio\2022\Community • Visual Studio Community 2022 version 17.1.32319.34 • Windows 10 SDK version 10.0.19041.0

[√] Android Studio (version 2021.1) • 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 • IntelliJ at C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2021.3.3 • Flutter plugin version 70.2.5 • Dart plugin version 222.4167.21

[√] Connected device (3 available) • Windows (desktop) • windows • windows-x64 • Microsoft Windows [Version 10.0.19044.2251] • Chrome (web) • chrome • web-javascript • Google Chrome 108.0.5359.125 • Edge (web) • edge • web-javascript • Microsoft Edge 108.0.1462.54

[√] HTTP Host Availability
• All required HTTP hosts are available

I use file picker with multi-select, often from cloud storage. This means that there can be a long wait between when the user selected the files and when they are ready to be processed. It then appears that the app is hanging. I show a spinner, but would love to give feedback to the user, so they can see there is something happening.

I was thinking of adding callbacks on file start and on file end. Possibly even a callback, say every 200 milliseconds, to indicate progress on larger files. Then I can give good feedback to the user.