$ git clone https://github.com/ashut08/line_sign_in_demo.git
$ cd line_sign_in_demo/
I write a blog about this project where you can read setup guide for line devloper console Article Link
flutter_line_sdk:<latest version>
void main() {
WidgetsFlutterBinding.ensureInitialized();
LineSDK.instance.setup("${your channel id}").then((_) {
print("LineSDK Prepared");
});
runApp(MyApp());
}