Expo SMS

GitHub

npm

A library that provides access to the system's UI/app for sending SMS messages.

expo-sms provides access to the system's UI/app for sending SMS messages.

Platform Compatibility

Android Device	Android Emulator	iOS Device	iOS Simulator	Web

Installation

Terminal

- npx expo install expo-sms

If you are installing this in an existing React Native app, start by installing expo in your project. Then, follow the additional instructions as mentioned by the library's README under "Installation in bare React Native projects" section.

API

import * as SMS from 'expo-sms';

Methods

`SMS.isAvailableAsync()`

Determines whether SMS is available. Always returns false in the iOS simulator, and in browser.

Returns:

Promise<boolean>

Returns a promise that fulfils with a boolean, indicating whether SMS is available on this device.

Example

const isAvailable = await SMS.isAvailableAsync();
if (isAvailable) {
  // do your SMS stuff here
} else {
  // misfortune... there's no SMS available on this device
}

`SMS.sendSMSAsync(addresses, message, options)`

Parameter	Type	Description
addresses	`string \| string[]`	An array of addresses (phone numbers) or single address passed as strings. Those would appear as recipients of the prepared message.
message	`string`	Message to be sent.
options (optional)	`SMSOptions`	A `SMSOptions` object defining additional SMS configuration options.

Opens the default UI/app for sending SMS messages with prefilled addresses and message.

Returns:

Promise<SMSResponse>

Returns a Promise that fulfils with the SMS action is invoked by the user, with corresponding result:

If the user cancelled the SMS sending process: { result: 'cancelled' }.
If the user has sent/scheduled message for sending: { result: 'sent' }.
If the status of the SMS message cannot be determined: { result: 'unknown' }.

Android does not provide information about the status of the SMS message, so on Android devices the Promise will always resolve with { result: 'unknown' }.

Note: The only feedback collected by this module is whether any message has been sent. That means we do not check actual content of message nor recipients list.

Example

const { result } = await SMS.sendSMSAsync(
  ['0123456789', '9876543210'],
  'My sample HelloWorld message',
  {
    attachments: {
      uri: 'path/myfile.png',
      mimeType: 'image/png',
      filename: 'myfile.png',
    },
  }
);

Types

`SMSAttachment`

An object that is used to describe an attachment that is included with a SMS message.

Name	Type	Description
filename	`string`	The filename of the attachment.
mimeType	`string`	The mime type of the attachment such as `image/png`.
uri	`string`	The content URI of the attachment. The URI needs be a content URI so that it can be accessed by other applications outside of Expo. See FileSystem.getContentUriAsync).

`SMSOptions`

Name	Type	Description
attachments (optional)	`SMSAttachment \| SMSAttachment[]`	-

`SMSResponse`

Name	Type	Description
result	`'unknown' \| 'sent' \| 'cancelled'`	Status of SMS action invoked by the user.