[Bug]: ios 16.2, share_plus:11.1.0, error:Use of undeclared identifier 'UIActivityTypeAddToHomeScreen'

[huanguan1978]

Platform

Ios 16.2

Plugin

share_plus

Version

11.1.0

Flutter SDK

3.32.6

Steps to reproduce

I created a new project named hello using flutter create hello. Then, I added a new button with the following code:

                SharePlus.instance.share(
                  ShareParams(text: 'check out my website https://example.com'),
                );

When I try to run it on an iOS simulator, I get the following error.

Semantic Issue (Xcode): Use of undeclared identifier 'UIActivityTypeAddToHomeScreen'
/Users/kaguya/.pub-cache/hosted/pub.dev/share_plus-11.1.0/ios/share_plus/Sources/share_plus/FPPSharePlusPlugin.m:80:42

I'm sure that version 11.0.0 did not have this issue."

Code Sample

TextButton(
              onPressed: () {
                SharePlus.instance.share(
                  ShareParams(text: 'check out my website https://example.com'),
                );
              },
              child: const Text('share'),
            ),

Logs

Launching lib/main.dart on iPhone 14 Pro Max in debug mode...
Xcode build done.                                           10.6s
Failed to build iOS app
Semantic Issue (Xcode): Use of undeclared identifier 'UIActivityTypeAddToHomeScreen'
/Users/kaguya/.pub-cache/hosted/pub.dev/share_plus-11.1.0/ios/share_plus/Sources/share_plus/FPPSharePlusPlugin.m:80:42

Could not build the application for the simulator.
Error launching application on iPhone 14 Pro Max.

Exited (1).

Flutter Doctor

kaguya@kaguya-MacBookPro hello % flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 3.32.6, on macOS 12.7.6 21H1320 darwin-x64, locale en-HK)
[✓] Android toolchain - develop for Android devices (Android SDK version 36.1.0-rc1)
[!] Xcode - develop for iOS and macOS (Xcode 14.2)
    ! Flutter recommends a minimum Xcode version of 15.
      Download the latest version or update via the Mac App Store.
[✓] Chrome - develop for the web
[✓] Android Studio (version 2025.1)
[✓] VS Code (version 1.103.1)
[✓] Proxy Configuration
[✓] Connected device (3 available)
[✓] Network resources

! Doctor found issues in 1 category.

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

[moshe5745]

Same here

[StanleyCocos]

I see that you seem to be using a rather old version of Xcode. Could you try upgrading Xcode to the latest stable version?
I guess the reason is this piece of code. Your Xcode cannot recognize UIActivityTypeAddToHomeScreen.

if (@available(iOS 16.4, *)) {
      originalTypes[@"addToHomeScreen"] = UIActivityTypeAddToHomeScreen;
}

[huanguan1978]

From the official Flutter documentation (https://docs.flutter.dev/get-started/install/macos/desktop), it's stated: "Flutter supports developing on macOS 12 (Monterey) or later. "

macOS 12 can be upgraded to Xcode 14.2, which aligns with official guidance. However, as developers, unlike end-users, we should strive for more version compatibility, especially when developing desktop applications.

[StanleyCocos]

As far as I know, Xcode 14.2 was released in December 2022 and comes with the iOS 16.2 SDK, so it does not recognize UIActivityTypeAddToHomeScreen from the iOS 16.4 SDK. You just need to upgrade to Xcode 14.3 to resolve this issue, rather than sticking to the officially required minimum version for development. I’m not sure why you can’t upgrade Xcode, but if you still want to continue developing with Xcode 14.2, it’s recommended to either use the older version or fork and add the type yourself:

#ifndef UIActivityTypeAddToHomeScreen
xxx
#endif

[huanguan1978]

@StanleyCocos Thanks for pointing out those details. Like many individual developers, I use Flutter for cross-platform development (rather than specializing in iOS development), so the details you mentioned are very important. I hope the share_plus package can accommodate these specifics. If compatibility truly isn't possible, I'll just stick with an older version for now.

[vbuberen]

I hope the share_plus package can accommodate these specifics. If compatibility truly isn't possible, I'll just stick with an older version for now.

I guess you are misunderstanding that you need to update Xcode as explained by another person already. There is nothing about share_plus that needs adjustments to make your project work.

With that being said, I am thankful to @StanleyCocos for providing support here and closing the issue as it is an issue from developer side and used environment, not a share_plus package issue.