Receiving SMS messages

This recipe will demonstrate how to set up a broadcast receiver to notify you of new SMS messages. It's useful to note that your app does not need to be running to receive the SMS Intent. Android will start your service to process the SMS.

Getting ready

Create a new project in Android Studio and call it ReceiveSMS. Use the default Phone & Tablet options and select Empty Activity in the Add an Activityto Mobile dialog.

How to do it...

We won't be using a layout in this demonstration as all the work will be in the Broadcast Receiver. We'll use Toasts to display incoming SMS messages. Open the Android Manifest and follow these steps:

1. Add the following permission:

<uses-permission android:name="android.permission.RECEIVE_SMS" />

2. Add the following declaration for the broadcast receiver to the application element:

<receiver android:name=".SMSBroadcastReceiver">
    <intent-filter>
        <action android:name="android.provider.Telephony.SMS_RECEIVED"/>...