androidsmsandroid-intentbroadcastreceiver

Reputation: 5450

Android - SMS Broadcast receiver

I have been trying to get this program to work but so far having no luck. I cannot find where I am doing wrong. I'm not sure if there's something wrong with the code, or debugging.

I'm trying to be notified if a new SMS arrives.

Here is my program:

package Technicaljar.SMSBroadcastReceiver;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.telephony.SmsMessage;
import android.util.Log;

public class SMSBroadcastReceiver extends BroadcastReceiver {

        private static final String SMS_RECEIVED = "android.provider.Telephony.SMS_RECEIVED";
        private static final String TAG = "SMSBroadcastReceiver";

        @Override
        public void onReceive(Context context, Intent intent) {
             Log.i(TAG, "Intent recieved: " + intent.getAction());

                if (intent.getAction() == SMS_RECEIVED) {
                    Bundle bundle = intent.getExtras();
                    if (bundle != null) {
                        Object[] pdus = (Object[])bundle.get("pdus");
                        final SmsMessage[] messages = new SmsMessage[pdus.length];
                        for (int i = 0; i < pdus.length; i++) {
                            messages[i] = SmsMessage.createFromPdu((byte[])pdus[i]);
                        }
                        if (messages.length > -1) {
                            Log.i(TAG, "Message recieved: " + messages[0].getMessageBody());
                        }
                    }
                }
           }
    }

And the manifest file:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="Technicaljar.SMSBroadcastReceiver"
      android:versionCode="1"
      android:versionName="1.0">
    <application android:icon="@drawable/icon" android:label="@string/app_name" android:debuggable="true" >
        <receiver android:name=".SMSBroadcastReceiver">
            <intent-filter>
                <action android:name="android.provider.telephony.SMS_RECEIVED"></action>
            </intent-filter>
        </receiver>

    </application>
    <uses-sdk android:minSdkVersion="7" />
    <uses-permission android:name="android.permission.INTERNET"></uses-permission>
    <uses-permission android:name="android.permission.RECEIVE_SMS"></uses-permission>
</manifest>

I am sending SMS through Telnet, and I cannot see any Intent received messages in the logcat. Here is my logcat from the time of installation.

D/AndroidRuntime(  478): 
D/AndroidRuntime(  478): >>>>>>>>>>>>>> AndroidRuntime START <<<<<<<<<<<<<<
D/AndroidRuntime(  478): CheckJNI is ON
D/AndroidRuntime(  478): --- registering native functions ---
D/AndroidRuntime(  478): Shutting down VM
D/dalvikvm(  478): Debugger has detached; object registry had 1 entries
I/AndroidRuntime(  478): NOTE: attach of thread 'Binder Thread #3' failed
D/Mms:app (  220): getSmsNewMessageNotificationInfo: count=14, first addr=12345, thread_id=4
D/dalvikvm(  151): GC_EXPLICIT freed 391 objects / 22552 bytes in 65ms
D/dalvikvm(  220): GC_EXPLICIT freed 926 objects / 44840 bytes in 73ms

So the SMS seems to be received by the emulator, but looks like the no intents are firing. What am I doing wrong here? After installing, do I have to somehow 'start' this receiver? Because when I install, I get

 [2010-11-07 21:24:41 - SMSBroadcastReceiver] No Launcher activity found!
[2010-11-07 21:24:41 - SMSBroadcastReceiver] The launch will only sync the application package on the device!

So I'm wondering if something's wrong here.

Upvotes: 63

Answers (10)

Martin Zeitler

Reputation: 76589

Method getMessagesFromIntent(Intent intent) does just the same:

Read the PDUs out of an SMS_RECEIVED_ACTION or a DATA_SMS_RECEIVED_ACTION intent.

Where PDU means "protocol description unit", according to the GSM SMS PDU specification.

One ultimately has to declare permission android.permission.BROADCAST_SMS on the receiver node, because it has to be android:exported="true". Also see: Insecure broadcast receivers.

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

<receiver
    android:permission="android.permission.BROADCAST_SMS"
    android:name=".receiver.SmsBroadcastReceiver"
    android:exported="true"
    android:enabled="true">
    <intent-filter>
        <action android:name="android.provider.Telephony.SMS_RECEIVED"/>
    </intent-filter>
</receiver>

In Kotlin the BroadcastReceiver would look alike this:

class SmsBroadcastReceiver: BroadcastReceiver() {
    override fun onReceive(context: Context?, intent: Intent?) {
        if (intent?.action.equals(Telephony.Sms.Intents.SMS_RECEIVED_ACTION)) {
            val items: Array<SmsMessage> = Telephony.Sms.Intents.getMessagesFromIntent(intent)
            for (item in items) {Log.d(LOG_TAG, item.messageBody)}
        }
    }
    companion object {
        val LOG_TAG: String = SmsBroadcastReceiver::class.java.simpleName
    }
}

Upvotes: 0

kjdion84

Reputation: 10044

Stumbled across this today. For anyone coding an SMS receiver nowadays, use this code instead of the deprecated in OP:

SmsMessage[] msgs = Telephony.Sms.Intents.getMessagesFromIntent(intent);
SmsMessage smsMessage = msgs[0];

Upvotes: 4

TheIT

Reputation: 12219

Also note that the Hangouts application will currently block my BroadcastReceiver from receiving SMS messages. I had to disable SMS functionality in the Hangouts application (Settings->SMS->Turn on SMS), before my SMS BroadcastReceived started getting fired.

Edit: It appears as though some applications will abortBroadcast() on the intent which will prevent other applications from receiving the intent. The solution is to increase the android:priority attribute in the intent-filter tag:

<receiver android:name="com.company.application.SMSBroadcastReceiver" >
  <intent-filter android:priority="500">
    <action android:name="android.provider.Telephony.SMS_RECEIVED" />
  </intent-filter>
</receiver>

See more details here: Enabling SMS support in Hangouts 2.0 breaks the BroadcastReceiver of SMS_RECEIVED in my app

Upvotes: 6

Dracontis

Reputation: 4364

I've encountered such issue recently. Though code was correct, I didn't turn on permissions in app settings. So, all permissions hasn't been set by default on emulators, so you should do it yourself.

Upvotes: 1

Peter Chaula

Reputation: 3711

For android 19+ you can get it in Telephony.Sms.Intents.SMS_RECEIVED_ACTION). There are more in the Intents class that 're worth looking at

Upvotes: 1

Phil Haigh

Reputation: 4591

Your broadcast receiver must specify android:exported="true" to receive broadcasts created outside your own application. My broadcast receiver is defined in the manifest as follows:

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

As noted below, exported="true" is the default, so you can omit this line. I've left it in so that the discussion comments make sense.

Upvotes: 3

Cool Java guy מוחמד

Reputation: 1727

android.provider.telephony.SMS_RECEIVED is not correct because Telephony is a class and it should be capital as in android.provider.Telephony.SMS_RECEIVED

Upvotes: 0

Cathy

Reputation: 31

intent.getAction().equals(SMS_RECEIVED)

I have tried it out successfully.

Upvotes: 3

anshul

Reputation: 209

I tried your code and found it wasn't working.

I had to change

if (intent.getAction() == SMS_RECEIVED) {

if (intent.getAction().equals(SMS_RECEIVED)) {

Now it's working. It's just an issue with java checking equality.

Upvotes: 18

CommonsWare

Reputation: 1006604

android.provider.Telephony.SMS_RECEIVED has a capital T, and yours in the manifest does not.

Please bear in mind that this Intent action is not documented.

Upvotes: 79

Android - SMS Broadcast receiver

Answers (10)

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