[Bug]: lambda expressions are not supported in -source 7

[giangdk]

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What happened?

/Users/mac/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/onesignal_flutter-5.0.0/android/src/main/java/com/onesignal/flutter/OneSignalNotifications.java:77: error: lambda expressions are not supported in -source 7 OneSignal.getNotifications().requestPermission(fallback, Continue.with(permissionResult -> { ^ (use -source 8 or higher to enable lambda expressions)

Steps to reproduce?

1. install onesignal 5.0.0
2. setup onesignal for android
3. build app
4. error:
/Users/mac/Documents/flutter/.pub-cache/hosted/pub.dartlang.org/onesignal_flutter-5.0.0/android/src/main/java/com/onesignal/flutter/OneSignalNotifications.java:77: error: lambda expressions are not supported in -source 7
        OneSignal.getNotifications().requestPermission(fallback, Continue.with(permissionResult -> {
                                                                                          ^
  (use -source 8 or higher to enable lambda expressions)

What did you expect to happen?

not error

OneSignal Flutter SDK version

5.0.0

Which platform(s) are affected?

• [ ] iOS
• [X] Android

Relevant log output

private void requestPermission(MethodCall call, Result result) {
        boolean fallback = (boolean) call.argument("fallbackToSettings");
        OneSignal.getNotifications().requestPermission(fallback, Continue.with(permissionResult -> {
            replySuccess(result, permissionResult.getData());
        }));
    }

Code of Conduct

• [X] I agree to follow this project's Code of Conduct

[talkbiz]

I just face similar issue. Any solution?

[wupengbigMarker]

I got the same issue. Did you fix this? @giangdk @talkbiz

[talkbiz]

I got the same issue. Did you fix this? @giangdk @talkbiz

I abandoned the plugin