[connectivity_plus] Upgrading to version 2.0.1 causes 'error: lambda expressions are not supported in -source 7'

[mzkai]

System info

Issue occurs on: Android
Plugin name: connectivity_plus
Plugin version: 2.0.1

Flutter doctor output:

[✓] Flutter (Channel stable, 2.5.2, on macOS 11.6 darwin-arm)
[✓] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
[✓] Xcode - develop for iOS and macOS
[✓] Chrome - develop for the web
[✓] Android Studio (version 2020.3)
[✓] VS Code (version 1.60.2)
[✓] Connected device (2 available)

Steps to Reproduce

Installing version 2.0.1 gives me the following error when running 'flutter build appbundle --release':

.pub-cache/hosted/pub.dartlang.org/connectivity_plus-2.0.1/android/src/main/java/dev/fluttercommunity/plus/connectivity/ConnectivityBroadcastReceiver.java:86: error: lambda expressions are not supported in -source 7
    Runnable runnable = () -> events.success(connectivity.getNetworkType());
                           ^
  (use -source 8 or higher to enable lambda expressions)
1 error

FAILURE: Build failed with an exception.

Steps taken

The following steps have been taken before running the build command:

1. flutter clean
2. rm -rf .pub-cache/
3. flutter pub get
4. flutter build appbundle --release

Changing to version 1.0.4 of the plugin and re-running the above steps solves the issue.

[vbuberen]

I believe that this issue is caused by this change in #510

[juliansteenbakker]

That's my bad, i thought the declaration was redundant. I'll fix it and make a PR right away.