url_launcher_utils 0.1.1

A reusable Flutter abstraction over url_launcher for calls, SMS, email, messaging apps, maps, and browser URLs.

url_launcher_utils

url_launcher_utils is a Flutter package that wraps url_launcher with a focused API for common URL-based actions:

• Phone calls
• SMS
• Email
• WhatsApp
• Telegram
• Viber
• Maps search and directions
• Browser URLs

The package is mobile-first for Android and iOS. Generic web URLs and email links may also work on desktop and web, but third-party messaging integrations are primarily intended for mobile devices.

Features

• Static, easy-to-call API through UrlLauncherUtils
• Strong input validation with package-specific exceptions
• Uri-first builders for cleaner and safer launch requests
• Typed LaunchResult for caller-side status inspection
• Automatic Play Store/App Store fallback for WhatsApp, Telegram, and Viber
• Example app with dedicated screens for each use case
• Unit and widget tests

Installation

Add the package to pubspec.yaml:

dependencies:
  url_launcher_utils: ^0.1.0

Then run:

flutter pub get

Usage

Phone call

await UrlLauncherUtils.launchPhoneCall(
  phoneNumber: '[phone]',
);

SMS

await UrlLauncherUtils.sendSms(
  phoneNumber: '[phone]',
  message: 'Hello from Flutter',
);

Email

await UrlLauncherUtils.sendEmail(
  recipients: const ['[e-mail]'],
  cc: const ['[e-mail]'],
  subject: 'Feedback',
  body: 'This package works well.',
);

WhatsApp

await UrlLauncherUtils.openWhatsApp(
  phoneNumber: '[phone]',
  message: 'Hello',
);

Telegram

await UrlLauncherUtils.openTelegram(username: '@flutterdev');
await UrlLauncherUtils.openTelegram(phoneNumber: '[phone]');

Viber

await UrlLauncherUtils.openViber(phoneNumber: '[phone]');

Maps

await UrlLauncherUtils.openMapLocation(
  target: MapLocation.query('1 Infinite Loop, Cupertino'),
);

await UrlLauncherUtils.openMapDirections(
  origin: MapLocation.coordinates(37.33182, -122.03118),
  destination: MapLocation.query('Golden Gate Bridge'),
);

Browser

await UrlLauncherUtils.openUrl(
  url: Uri.parse('https://flutter.dev'),
);

Error handling

Every launcher method returns a LaunchResult:

• LaunchStatus.launchedPrimary
• LaunchStatus.launchedFallback
• LaunchStatus.failed

Validation problems throw UrlLauncherValidationException.

If launching WhatsApp, Telegram, or Viber fails because the app is unavailable, the package attempts to redirect to the appropriate store page on Android or iOS. In debug mode, failed launches print Could not launch <url>.

Notes

• Google Maps universal URLs are used for map search and directions.
• Telegram requires exactly one of username or phoneNumber.
• Viber consumer-chat support is best-effort because official Viber deep-link documentation focuses on bot and public-account flows.

See the runnable sample inside example/.