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[Bug]: (share_plus) iOS drops the subject when sharing a uri

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2/5
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1-3 小时
新手友好度
82/100
Issue 类型
缺陷
描述清晰度
描述清楚
活跃度
活跃
技术栈
dart, ios, objective-c
领域
mobile

调研方向

从 packages/share_plus/share_plus/ios/share_plus/Sources/share_plus/FPPSharePlusPlugin.m 开始，跟踪 shareUri: 路径，并将其与 shareText: 和 shareFiles: 进行比较。将已读取的 shareTitle 通过 shareUri: 传递给 share:withSubject:。完成标准是 iOS URI 分享在 Mail 中保留主题，同时保留丰富链接预览。

由索引模型根据 Issue 内容生成。

描述

bug triage
Platform

iOS 15

Plugin

share_plus

Version

13.3.0

Flutter SDK

3.44.9

Steps to reproduce
  1. On an iOS device, share a uri with a subject (see the code sample).
  2. Pick Mail in the share sheet.
  3. The Mail compose view opens with an empty subject line.

On Android the same call fills the subject, because Share.kt puts it in EXTRA_SUBJECT for a uri too. ShareParams.subject is documented as "Supported platforms: All".

This is not a duplicate of #3968, #347 or #691. Those are about the text path and Gmail. This is the uri path, where the subject never reaches the share sheet at all.

Cause

The uri branch of FPPSharePlusPlugin.m never reads the subject:

  • The subject is read into shareTitle (L294-L297), but only shareText: and shareFiles: receive it.
  • shareUri: calls share:withSubject:nil (L460-L472).
  • share:withSubject: only skips NSNull, so it sets the controller's subject to nil (L409-L411). The comment on that block says it is there to force the subject "when sharing a raw url or files", which is exactly the case that gets nil.

Suggested fix

Pass shareTitle into shareUri: and forward it to share:withSubject: instead of nil, as shareText: and shareFiles: already do. The item stays an NSURL, so the rich link preview is unaffected.

Code Sample
await SharePlus.instance.share(
  ShareParams(
    uri: Uri.parse('https://flutter.dev'),
    subject: 'Subject for Mail',
  ),
);
Logs
No error or exception. The share sheet and Mail open normally, only the subject is empty.
Flutter Doctor
[✓] Flutter (Channel stable, 3.44.9, on macOS 26.6.2 25G83 darwin-arm64, locale en-EE) [431ms]
    • Flutter version 3.44.9 on channel stable at /Users/**/.local/share/mise/http-tarballs/e5c14d6b5e917a8578327d2564ab78ece83cd685c74c29572ddaf7655f42205d
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 6b182d2c75 (8 weeks ago), 2026-08-05 10:04:07 -0700
    • Engine revision 5a2a6a42cc
    • Dart version 3.12.2
    • DevTools version 2.57.0
    • Feature flags: enable-web, enable-linux-desktop, enable-macos-desktop, enable-windows-desktop, enable-android, enable-ios, cli-animations, enable-native-assets, no-enable-swift-package-manager,
      omit-legacy-version-file, enable-lldb-debugging, no-enable-uiscene-migration

[✓] Android toolchain - develop for Android devices (Android SDK version 37.0.0) [1,412ms]
    • Android SDK at /Users/**/Library/Android/sdk
    • Emulator version 36.1.9.0 (build_id 13823996) (CL:N/A)
    • Platform android-37.0, build-tools 37.0.0
    • ANDROID_HOME = /Users/**/Library/Android/sdk
    • Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/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 21.0.9+-14787801-b1163.94)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 26.6) [1,046ms]
    • Xcode at /Applications/Xcode-26.6.0.app/Contents/Developer
    • Build 17F113
    • CocoaPods version 1.17.0

[✓] Chrome - develop for the web [5ms]
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome
Checklist before submitting a bug
  • I searched issues in this repository and couldn't find such bug/problem
  • I Google'd a solution and I couldn't find it
  • I searched on StackOverflow for a solution and I couldn't find it
  • I read the README.md file of the plugin
  • I'm using the latest version of the plugin
  • All dependencies are up to date with flutter pub upgrade
  • I did a flutter clean
  • I tried running the example project
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