[Bug]: connectivity_plus crashes when running on real IOS device

[ambstuc]

Platform

IOS 16.6.1

Plugin

connectivity_plus

Version

4.0.2

Flutter SDK

3.13.5

Steps to reproduce

1. Create new Flutter project in VS-Code ('empty flutter project'). Code attached is unchanged from the template project

2. Run project on real IOS device (iPhone 13 pro in m case). Output:

Launching lib/main.dart on ... in debug mode...
Automatically signing iOS for device deployment using specified development team in Xcode project: XXX
Xcode build done.
(lldb) 2023-09-21 22:53:07.512889+0100 Runner[853:88338] [VERBOSE-2:FlutterDarwinContextMetalImpeller.mm(37)] Using the Impeller rendering backend.
Connecting to VM Service at ws://127.0.0.1:64855/EZy9MDloE_s=/ws

4. install connectivity_plus (flutter pub add connectivity_plus)

5. Re-run project. Output:

Xcode build done.
(lldb) 2023-09-21 22:56:21.599196+0100 Runner[858:90229] [VERBOSE-2:FlutterDarwinContextMetalImpeller.mm(37)] Using the Impeller rendering backend.
thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x0)
frame #0: 0x0000000000000000
error: memory read failed for 0x0
Target 0: (Runner) stopped.
Error launching application on device.

Code Sample

import 'package:flutter/material.dart';

void main() {
  runApp(const MainApp());
}

class MainApp extends StatelessWidget {
  const MainApp({super.key});

  @override
  Widget build(BuildContext context) {
    return const MaterialApp(
      home: Scaffold(
        body: Center(
          child: Text('Hello World!'),
        ),
      ),
    );
  }
}

Logs

Log too long to be attached

Flutter Doctor

Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 3.13.5, on macOS 13.5.2 22G91 darwin-x64, locale en-GB)
[✓] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
[✓] Xcode - develop for iOS and macOS (Xcode 15.0)
[✓] Chrome - develop for the web
[✓] Android Studio (version 2022.1)
[✓] VS Code (version 1.82.1)
[✓] Connected device (3 available)
[✓] Network resources

Checklist before submitting a bug

• 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

[lvsecoto]

same for me

'''
@discardableResult
private func ensurePathMonitor() -> NWPathMonitor {
if (_pathMonitor == nil) {
let pathMonitor = NWPathMonitor() // 《= Thread 1: EXC_BAD_ACCESS (code=1, address=0x0)
pathMonitor.start(queue: queue)
pathMonitor.pathUpdateHandler = pathUpdateHandler
_pathMonitor = pathMonitor
}
return _pathMonitor!
}
'''

[adil-nangyal]

![Screenshot 2023-09-22 at 11 40 51 AM (2)] Same issue

[ganwumeng]

Same for me.It's quite normal last time I used it.

[ganwumeng]

#2154

It's a useful way to solve this problem temporarily.

[vbuberen]

Unfortunately, don't have real iOS device available, so can't check and fix it. Would appreciate somebody taking care of it and opening a PR.

[ts-lawrence]

It seems 4.0.2 works on ios 17, but crashes on earlier versions.

[AlexeyRottCr]

Same, only works on IOS 17

[fvisticot]

App crash with iOS16.X
I made the the test after upgrading to iOS17 and it works.

[adrianvintu]

Crashes for me as well 16.6.1

[ts-lawrence]

Hi guys, I managed to fix this issue by modifying Podfile as follows：
post_install do |installer| installer.pods_project.targets.each do |target| flutter_additional_ios_build_settings(target) target.build_configurations.each do |config| config.build_settings.delete 'IPHONEOS_DEPLOYMENT_TARGET' end end end
After remove IPHONEOS_DEPLOYMENT_TARGET, all pods deploy target will be the same as main project. In my case, it's 'ios 13'. After that it works well in 16.6.1. The crash point is here:
" if #available(iOS 12, *) {
connectivityProvider = PathMonitorConnectivityProvider()
} else {
connectivityProvider = ReachabilityConnectivityProvider()
}"
Not quite sure about the root cause, anyone can help explain here.

[adrianvintu]

My code needed 2 changes, one for this plugin, one for the new Flutter version (i think)

platform :ios, '13.0'
....
post_install do |installer|
  installer.pods_project.targets.each do |target| 
    flutter_additional_ios_build_settings(target)
    target.build_configurations.each do |config|
      #https://github.com/fluttercommunity/plus_plugins/issues/2154#issuecomment-1730330223
      config.build_settings.delete 'IPHONEOS_DEPLOYMENT_TARGET'

      #https://stackoverflow.com/a/77134628/5734049
      xcconfig_path = config.base_configuration_reference.real_path
      xcconfig = File.read(xcconfig_path)
      xcconfig_mod = xcconfig.gsub(/DT_TOOLCHAIN_DIR/, "TOOLCHAIN_DIR")
      File.open(xcconfig_path, "w") { |file| file << xcconfig_mod }
      end
  end
end }

[WieFel]

+1 on iPhone SE running iOS 15.7.9 and Flutter 3.13.0

[Bennik2000]

+1 on iPhone 6s running iOS 15.7.7 and Flutter 3.13.6

The app crashes when building using Xcode 15 on my mac. When building in the CI pipeline using Xcode 14.2 and fastlane the app does not crash.