Making Calls in Flutter

Last Updated : 09 Apr, 2025

In this online world, customer care plays a major role in the success of a company. Users are quite satisfied when they converse with the executives through calls. This has forced companies to add phone numbers to their apps for their customers to contact them easily. But dialing those numbers from the app into the default phone app makes it quite cumbersome. So, to improve the user experience, Flutter has come up with a feature where the user can call the other, just with a click.

In Flutter, there are two ways to make a phone call.

Launching the Default Phone Dialer App
Making Direct Phone Calls (Without Opening Dialer)

Launching the Default Phone Dialer App

In this process, the default phone app will be used to make a call; it will open the app directly, and the number will be automatically filled in the text field.

Steps to Implement Making Calls in Flutter application

Step 1: Create a New Flutter Application

Create a new Flutter application using the command Prompt. To create a new app, write the below command and run it.

flutter create app_name

To know more about it refer this article: Creating a Simple Application in Flutter

Step 2: Adding the Dependency

To add the dependency to the pubspec.yaml file, add url_launcher as a dependency in the dependencies part of the pubspec.yaml file, as shown below:

Dart

dependencies: flutter: sdk: flutter url_launcher: ^6.3.1

Now run the below command in the terminal.

flutter pub get

Step 3: Importing the Dependency

Use the below line of code in the main.dart file, to import the url_launcher dependency :

import 'package:url_launcher/url_launcher.dart';

Step 4: Follow the Below Steps

1. _makingPhoneCall function

Now, let’s create a function that can be called whenever the user clicks a button,that’s linked to a phone number, o make a call.

Dart

_makingPhoneCall() async {       var _url = Uri.parse("tel:1234567890");       if (!await launchUrl(_url, mode: LaunchMode.externalApplication)) {               throw Exception('Could not launch $_url');       } }

The function is named here as “_makingPhoneCall” and the function is declared as “async”, so that it returns a promise.
The “url” variable is assigned with the required phone number, as a string. The “tel:” syntax here before the phone number, makes Flutter realize that the following number is a phone number that has to be opened in the default Phone App. It is declared as a “const”, so that the variable is not changed under any circumstance.
If there is a possibility to launch the URL, only then the URL is launched by calling the launch() function with the URL variable as an attribute.
Otherwise, it will throw/print a text with the URL value as an error message.

2. Calling the function

The above function can be called when needed inside the program by calling the name of the functions as it is. The example is as follows:

This creates a raised button having the text “Call” on it.
For the onPressed attribute, we are calling “_makingPhoneCall” so that when the button is pressed, the default Phone app is opened and the phone number in the URL variable is dialed automatically, making it easier for the user.

Complete Source Code

main.dart

Dart

import 'package:flutter/material.dart'; import 'package:url_launcher/url_launcher.dart';   void main() => runApp(const MyApp());  _makingPhoneCall() async {   var _url = Uri.parse("tel:1234567890");   if (!await launchUrl(_url, mode: LaunchMode.externalApplication)) {     throw Exception('Could not launch $_url');   } }  class MyApp extends StatelessWidget {   const MyApp({Key? key}) : super(key: key);   @override   Widget build(BuildContext context) {     return MaterialApp(       debugShowCheckedModeBanner: false,       home: Scaffold(         appBar: AppBar(           title: const Text('Geeks for Geeks'),           backgroundColor: Colors.green,         ), // AppBar         body: SafeArea(           child: Center(             child: Column(               children: [                 Container(                   height: 250.0,                 ),//Container                 const Text(                   'Welcome to GFG!',                   style: TextStyle(                     fontSize: 30.0,                     color: Colors.green,                     fontWeight: FontWeight.bold,                   ),//TextStyle                 ),//Text                 Container(                   height: 20.0,                 ),                 const Text(                   'For further Updates',                   style: TextStyle(                     fontSize: 20.0,                     color: Colors.green,                     fontWeight: FontWeight.bold,                   ),                 ),                 Container(                   height: 20.0,                 ),                ElevatedButton(                   onPressed: _makingPhoneCall,                   style: ElevatedButton.styleFrom(                     backgroundColor: Colors.green,                     foregroundColor: Colors.white                   ),                   child: const Text('Here'),                 ), // ElevatedButton               ],             ),           ),         ),       ),     );   } }

Output:

Making Direct Phone Calls (Without Opening Dialer)

In this process, the specific number will be called directly from our Flutter app, unlike the previous method, which opens the default phone app on your mobile device.

Steps to Implement Making Calls in Flutter application

Step 1: Create a New Flutter Application

Create a new Flutter application using the command Prompt. To create a new app, write the below command and run it.

flutter create app_name

To know more about it refer this article: Creating a Simple Application in Flutter

Step 2: Adding the Dependency

To add the dependency to the pubspec.yaml file, add direct_phone_call as a dependency in the dependencies part of the pubspec.yaml file, as shown below:

Dart

dependencies: flutter: sdk: flutter direct_phone_call: ^1.0.0

Now run the below command in the terminal.

flutter pub get

Step 3: Importing the Dependency

Use the below line of code in the main.dart file, to import the direct_phone_call dependency :

import 'package:direct_phone_call/direct_phone_call.dart';

Step 4: Method to make a phone call

Dart

// Method to make a phone call Future<void> _makeACall() async {     // Dismiss the keyboard     FocusScope.of(context).unfocus();      // Validate the form     if (_formKey.currentState!.validate()) {          bool isCalled = false;         try {             // Attempt to make the phone call             isCalled = await _directPhoneCallPlugin.callNumber(                 number: _phoneNoController.text);         } catch (e) {             // Log any exceptions             log('Exception : ${e}');          }     } }

Complete Source code

main.dart:

Dart

// For logging purposes import 'dart:developer'; // Flutter UI framework import 'package:flutter/material.dart'; // For asynchronous programming import 'dart:async'; // For platform-specific services import 'package:flutter/services.dart'; // Plugin for making direct phone calls import 'package:direct_phone_call/direct_phone_call.dart';  void main() {   // Entry point of the app   runApp(const MyApp()); }  // Main application widget class MyApp extends StatefulWidget {   const MyApp({super.key});    @override   State<MyApp> createState() => _MyAppState(); }  // State class for MyApp class _MyAppState extends State<MyApp> {   // Key for form validation   final GlobalKey<FormState> _formKey = GlobalKey();   // Controller for phone number input   final TextEditingController _phoneNoController = TextEditingController();   // Instance of the phone call plugin   final _directPhoneCallPlugin = DirectPhoneCall();    @override   void dispose() {     super.dispose(); // Dispose resources     _phoneNoController.dispose(); // Dispose the controller   }    // Method to make a phone call   Future<void> _makeACall() async {     // Dismiss the keyboard     FocusScope.of(context).unfocus();     // Validate the form     if (_formKey.currentState!.validate()) {       bool isCalled = false;       try {         // Attempt to make the phone call         isCalled = await _directPhoneCallPlugin.callNumber(             number: _phoneNoController.text);       } catch (e) {         // Log any exceptions         log('Exception : ${e}');       }     }   }    @override   Widget build(BuildContext context) {     return MaterialApp(       // Disable debug banner       debugShowCheckedModeBanner: false,       home: Scaffold(         appBar: AppBar(           title: const Text('Make a call'),           backgroundColor: Colors.green,           // App bar text color           foregroundColor: Colors.white,         ),         body: Form(           key: _formKey, // Assign form key           child: Padding(             padding: const EdgeInsets.all(16.0),             child: Column(               children: [                 const SizedBox(                   height: 24,                 ),                 TextFormField(                   controller: _phoneNoController, // Assign controller                   style: const TextStyle(                     fontSize: 12,                     fontWeight: FontWeight.w500,                   ),                   validator: (value) {                     // Validation logic                     if (value == null || value.isEmpty) {                       // Error for empty input                       return 'Please fill phone number';                     }                     if (value.isNotEmpty && value.length < 7) {                       // Error for invalid number                       return 'Invalid number';                     }                     // Input is valid                     return null;                   },                   keyboardType: TextInputType.phone, // Set keyboard type                   textInputAction: TextInputAction.done, // Set action button                   decoration: InputDecoration(                     fillColor: Colors.white, // Input field background color                     hintText: 'Phone number', // Placeholder text                     hintStyle: const TextStyle(                       color: Colors.black26,                       fontSize: 12,                       fontWeight: FontWeight.w400,                     ),                     prefixIcon: Icon(                       Icons.local_phone_rounded,                       color: Colors.green.shade800,                       size: 18,                     ), // Phone icon                     contentPadding: EdgeInsets.zero, // Remove padding                     border: OutlineInputBorder(                       borderRadius: BorderRadius.circular(10), // Rounded border                       borderSide: const BorderSide(                         color: Colors.black38,                       ),                     ),                     enabledBorder: OutlineInputBorder(                       borderRadius: BorderRadius.circular(10),                       borderSide: const BorderSide(                         color: Colors.black38,                       ),                     ),                     focusedBorder: OutlineInputBorder(                       borderRadius: BorderRadius.circular(10),                       borderSide: const BorderSide(                         color: Colors.green,                         width: 1.5,                       ),                     ),                   ),                   onFieldSubmitted: (val) =>                       _makeACall(), // Call method on submit                 ),                 const SizedBox(                   height: 12,                 ), // Add vertical spacing                 ElevatedButton(                   onPressed: () => _makeACall(), // Call method on button press                   style: ButtonStyle(                     backgroundColor: WidgetStatePropertyAll(                       Colors.green.shade900,                     ), // Button background color                     minimumSize: const WidgetStatePropertyAll(                       Size(100, 35),                     ), // Button size                   ),                   child: Container(                     child: const Text(                       'Call', // Button text                       style: TextStyle(                         color: Colors.white, // Text color                         fontSize: 13, // Text size                       ),                     ),                   ),                 ),               ],             ),           ),         ),       ),     );   } }

Output:

FAB - Speed Dial in Flutter

varshaadhanasekar

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Article Tags :

Making Calls in Flutter

Launching the Default Phone Dialer App

Steps to Implement Making Calls in Flutter application

Complete Source Code

Output:

Making Direct Phone Calls (Without Opening Dialer)

Steps to Implement Making Calls in Flutter application

Complete Source code

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