Making Calls in Flutter (original) (raw)

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. _m akingPhoneCall 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 onPressedattribute, 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 _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 createState() => _MyAppState(); }

// State class for MyApp class _MyAppState extends State { // Key for form validation final GlobalKey _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 }

@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: