show_alert_dialog.dart

import 'dart:io';

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:google_fonts/google_fonts.dart';

// Querying the environment via [Platform] throws and exception on Flutter web
// This extension adds a new [isWeb] getter that should be used
// before checking for any of the other environments

Future<bool> showAlertDialog({
  @required BuildContext context,
  @required String title,
  @required String content,
  String cancelActionText,
  @required String defaultActionText,
}) async {
  if (!Platform.isIOS) {
    return await showDialog(
      context: context,
      builder: (context) => AlertDialog(
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(15),
        ),
        title: Text(
          title,
          style: GoogleFonts.nunito(fontSize: 14, fontWeight: FontWeight.bold),
        ),
        content: Text(
          content,
          style: GoogleFonts.nunito(fontSize: 14, fontWeight: FontWeight.w600),
        ),
        actions: <Widget>[
          cancelActionText != null
              ? FlatButton(
                  child: Text(
                    cancelActionText,
                    style: GoogleFonts.nunito(fontSize: 14, fontWeight: FontWeight.bold),
                  ),
                  onPressed: () => Navigator.of(context).pop(false),
                )
              : Container(),
          FlatButton(
            child: Text(
              defaultActionText,
              style: GoogleFonts.nunito(fontSize: 14, fontWeight: FontWeight.bold),
            ),
            onPressed: () => Navigator.of(context).pop(true),
          ),
        ],
      ),
    );
  }
  return await showDialog(
    context: context,
    builder: (context) => AlertDialog(
      shape: RoundedRectangleBorder(
        borderRadius: BorderRadius.circular(15),
      ),
      title: Text(
        title,
        style: GoogleFonts.nunito(fontSize: 14, fontWeight: FontWeight.bold),
      ),
      content: Text(
        content,
        style: GoogleFonts.nunito(fontSize: 14, fontWeight: FontWeight.w600),
      ),
      actions: <Widget>[
        cancelActionText != null
            ? FlatButton(
                child: Text(
                  cancelActionText,
                  style: GoogleFonts.nunito(fontSize: 14, fontWeight: FontWeight.bold),
                ),
                onPressed: () => Navigator.of(context).pop(false),
              )
            : Container(),
        FlatButton(
          child: Text(
            defaultActionText,
            style: GoogleFonts.nunito(fontSize: 14, fontWeight: FontWeight.bold),
          ),
          onPressed: () => Navigator.of(context).pop(true),
        ),
      ],
    ),
  );
}