Flutter loading dialog builder

dialog_builder.dart

import 'package:flutter/material.dart';
import 'loading_indicator.dart';

class LoadingDialogBuilder {
  LoadingDialogBuilder(this.context);

  final BuildContext context;

  void showLoadingIndicator([String text]) {
    showDialog(
      context: context,
      barrierDismissible: false,
      builder: (BuildContext context) {
        return WillPopScope(
          onWillPop: () async => false,
          child: AlertDialog(
            shape: RoundedRectangleBorder(
              borderRadius: BorderRadius.all(Radius.circular(8.0))
            ),
            backgroundColor: Colors.black87,
            content: LoadingIndicator(
              text: text
            ),
          )
        );
      },
    );
  }

  void hideOpenDialog() {
    Navigator.of(context, rootNavigator: true).pop();
  }
}