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[cross_file] Document that mimeType is not expected to be set for io implementation #93379

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flutter/packages
#11662
Open
[cross_file] Document that mimeType is not expected to be set for io implementation#93379
flutter/packages
#11662
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P3Issues that are less important to the Flutter projectfound in release: 2.5Found to occur in 2.5found in release: 2.6Found to occur in 2.6good first issueRelatively approachable for first-time contributorshas reproducible stepsThe issue has been confirmed reproducible and is ready to work onpackageflutter/packages repository. See also p: labels.platform-androidAndroid applications specificallyteam-androidOwned by Android platform teamtriaged-androidTriaged by Android platform team
@alexobviously

Description

@alexobviously
alexobviously
opened on Nov 10, 2021

Steps to Reproduce

  1. Run the image picker example on a physical android device
  2. Add a line in _onImageButtonPressed to print(pickedFile?.mimeType)
  3. Pick an image

Expected results:
'image/jpeg' or something like that

Actual results:
null :'(

Code sample Reproducible with the official example, testing on a Poco X3.
Logs 
alex@Alexs-MacBook-Air ~ % flutter doctor -v
[✓] Flutter (Channel stable, 2.5.3, on macOS 12.0.1 21A559 darwin-arm, locale en-GB)
    • Flutter version 2.5.3 at /Users/alex/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 18116933e7 (4 weeks ago), 2021-10-15 10:46:35 -0700
    • Engine revision d3ea636dc5
    • Dart version 2.14.4

[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
    • Android SDK at /Users/alex/Library/Android/sdk
    • Platform android-30, build-tools 30.0.3
    • Java binary at: /Applications/Android Studio.app/Contents/jre/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 11.0.10+0-b96-7281165)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 13.1, Build version 13A1030d
    • CocoaPods version 1.11.2

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

[✓] Android Studio (version 2020.3)
    • 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 11.0.10+0-b96-7281165)

[✓] VS Code (version 1.62.0)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.28.0

[✓] Connected device (2 available)
    • M2007J20CG (mobile) • d35bf0f1 • android-arm64  • Android 11 (API 30)
    • Chrome (web)        • chrome   • web-javascript • Google Chrome 95.0.4638.69

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    P3Issues that are less important to the Flutter projectfound in release: 2.5Found to occur in 2.5found in release: 2.6Found to occur in 2.6good first issueRelatively approachable for first-time contributorshas reproducible stepsThe issue has been confirmed reproducible and is ready to work onpackageflutter/packages repository. See also p: labels.platform-androidAndroid applications specificallyteam-androidOwned by Android platform teamtriaged-androidTriaged by Android platform team

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