Multiple Connectivity instances breaks onConnectivityChanged #21709
Description
Using the connectivity plugin, if one creates multiple Connectivity() objects and listens to onConnectivityChanged, only one instance will receive events via the onConnectivityChanged stream.
Steps to Reproduce
- Run this app on a real iOS or Android device: https://gist.github.com/kibantony/7208a3feb786f5e41ecdb9fc5581d345
- With the app running, swipe up/down (depending on the platform) to bring up the OS shortcuts and turn off the network (Airplane mode).
- Return to the app and notice that only one of the Connectivity Status lines was updated.
Logs
Notice in the logs that onConnectivityChanged is only called for Connectivity instance B.
I/flutter ( 5122): A checkConnectivity: ConnectivityResult.wifi
I/flutter ( 5122): B onConnectivityChanged: ConnectivityResult.wifi
I/flutter ( 5122): B checkConnectivity: ConnectivityResult.wifi
I/flutter ( 5122): B onConnectivityChanged: ConnectivityResult.wifi
I/flutter ( 5122): B onConnectivityChanged: ConnectivityResult.none
Flutter Doctor
[✓] Flutter (Channel beta, v0.7.3, on Mac OS X 10.13.6 17G65, locale en-US)
• Flutter version 0.7.3 at /Users/tony/afero/flutter
• Framework revision 3b309bda07 (2 weeks ago), 2018-08-28 12:39:24 -0700
• Engine revision af42b6dc95
• Dart version 2.1.0-dev.1.0.flutter-ccb16f7282
[✓] Android toolchain - develop for Android devices (Android SDK 27.0.3)
• Android SDK at /Users/tony/Library/Android/sdk
• Android NDK location not configured (optional; useful for native profiling support)
• Platform android-27, build-tools 27.0.3
• Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b01)
• All Android licenses accepted.
[✓] iOS toolchain - develop for iOS devices (Xcode 9.4.1)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Xcode 9.4.1, Build version 9F2000
• ios-deploy 1.9.2
• CocoaPods version 1.5.3
[✓] Android Studio (version 3.1)
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin version 27.1.1
• Dart plugin version 173.4700
• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b01)
[✓] VS Code (version 1.27.1)
• VS Code at /Applications/Visual Studio Code.app/Contents
• Flutter extension version 2.18.0
[✓] Connected devices (2 available)
• SAMSUNG SM G925A • 02157df24a2a2e0a • android-arm64 • Android 6.0.1 (API 23)
• iPhone 8 • EEF6AF6E-7CBB-464D-9115-131D04A6A5B6 • ios • iOS 11.4 (simulator)
• No issues found!