Receive SMS Project in Android

Project Title: Receive SMS in Android

Submitted by: admin
Platform: Android
Category: Mobile Development

Overview:

This Android application demonstrates how to receive incoming SMS messages using a BroadcastReceiver. It’s useful for developers who want to create SMS-based applications like OTP verifiers, auto SMS readers, or SMS organizers.

Key Features:

• Automatically listens for incoming SMS messages.

• Parses sender information and message content.

• Displays the received SMS in the app UI or logs it.

• Optionally notifies the user via a toast or notification.

Technical Stack:

• Language: Java (or Kotlin)

• SDK: Android SDK 21+

• Permissions Required:

  xml

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

  1 2	<uses-permission android:name="android.permission.RECEIVE_SMS"/> <uses-permission android:name="android.permission.READ_SMS"/>

How It Works:

1. BroadcastReceiver listens for SMS_RECEIVED intent:

   java

   Java

   public class SmsReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { Bundle bundle = intent.getExtras(); if (bundle != null) { Object[] pdus = (Object[]) bundle.get("pdus"); for (Object pdu : pdus) { SmsMessage message = SmsMessage.createFromPdu((byte[]) pdu); String sender = message.getDisplayOriginatingAddress(); String body = message.getMessageBody(); Log.d("SMS", "From: " + sender + " - Message: " + body); } } } }

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   public class SmsReceiver extends BroadcastReceiver {     @Override     public void onReceive(Context context, Intent intent) {         Bundle bundle = intent.getExtras();         if (bundle != null) {             Object[] pdus = (Object[]) bundle.get("pdus");             for (Object pdu : pdus) {                 SmsMessage message = SmsMessage.createFromPdu((byte[]) pdu);                 String sender = message.getDisplayOriginatingAddress();                 String body = message.getMessageBody();                 Log.d("SMS", "From: " + sender + " - Message: " + body);             }         }     } }

2. Register Receiver in Manifest:

   xml

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

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

3. Request SMS Permissions at Runtime (Android 6.0+):

   java

   Java

   if (ContextCompat.checkSelfPermission(this, Manifest.permission.RECEIVE_SMS) != PackageManager.PERMISSION_GRANTED) { ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.RECEIVE_SMS}, 1); }

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   if (ContextCompat.checkSelfPermission(this, Manifest.permission.RECEIVE_SMS)     != PackageManager.PERMISSION_GRANTED) {     ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.RECEIVE_SMS}, 1); }

Use Cases:

• OTP auto-fill applications

• SMS spam filters

• SMS backup apps

• Custom SMS alert systems

Description:

This Android application demonstrates how to receive SMS messages in real-time. When an SMS is received, the app instantly displays the message on the screen using the Toast class—similar to a message box in desktop programming. This means:

• The message pops up briefly at the top of your phone.

• It is non-intrusive (unobtrusive), allowing users to continue using their device without interruption.

• The message is shown without taking focus, making it ideal for background SMS notifications or OTP alerts.

Educational Use:

This project is useful for:

• Understanding how SMS broadcasting works in Android.

• Learning how to implement a BroadcastReceiver for SMS handling.

• Observing how simple UI feedback can be given through Toast.

Instructions:

1. Download the source code.

2. Install the app on your Android device.

3. Send an SMS to your phone.

4. Watch how the message instantly appears as a toast notification.

Key Components:

• Permissions:

  xml

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

  1 2	<uses-permission android:name="android.permission.RECEIVE_SMS"/> <uses-permission android:name="android.permission.READ_SMS"/>

• Broadcast Receiver Example:

  java

  public class SmsReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { Bundle bundle = intent.getExtras(); if (bundle != null) { Object[] pdus = (Object[]) bundle.get("pdus"); for (Object pdu : pdus) { SmsMessage sms = SmsMessage.createFromPdu((byte[]) pdu); String msg = sms.getMessageBody(); Toast.makeText(context, "SMS Received: " + msg, Toast.LENGTH_LONG).show(); } } } }

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  public class SmsReceiver extends BroadcastReceiver {     @Override     public void onReceive(Context context, Intent intent) {         Bundle bundle = intent.getExtras();         if (bundle != null) {             Object[] pdus = (Object[]) bundle.get("pdus");             for (Object pdu : pdus) {                 SmsMessage sms = SmsMessage.createFromPdu((byte[]) pdu);                 String msg = sms.getMessageBody();                 Toast.makeText(context, "SMS Received: " + msg, Toast.LENGTH_LONG).show();             }         }     } }

• Manifest Declaration:

  xml

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

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

• Download Here: Receive SMS Project Code