How to read SMS code from your android App

Question

We are looking to build the functionality in our app to read a security code that being sent as part of SMS and display on the textView. Also, I am not looking to build a broadcast receiver, may be an intent service which only will start run on a particular screen and kill the service once user navigated to another screen.

It would be great if anyone can shade some light and help with some sample code.

Answer 1

To read incoming SMS you have to do three things.

1. Broadcast Receiver
2. Declare Broadcast Receiver in manifest
3. Need SMS Receive permissions

Note: If you are compiling against 6.0 Marshmallow you have get android.permission.RECEIVE_SMS at runtime. Runtime Permissions

Lets Starts Receiving incoming SMS

1) First add permissions in manifest

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

2) Declare Broadcast Receiver in Manifest.

What this declaration do it will inform you when ever a new SMS Receive by device.

<receiver android:name="com.example.abc.ReciveSMS">
    <intent-filter>
        <action android:name="android.provider.Telephony.SMS_RECEIVED" />
    </intent-filter>
</receiver>

3) Add this code to your declared class in manifest

public class ReciveSMS extends BroadcastReceiver{

    private SharedPreferences preferences;

    @Override
    public void onReceive(Context context, Intent intent) {
        // TODO Auto-generated method stub

        if(intent.getAction().equals("android.provider.Telephony.SMS_RECEIVED")){
            Bundle bundle = intent.getExtras();           //---get the SMS message passed in---
            SmsMessage[] msgs = null;
            String msg_from;
            if (bundle != null){
                //---retrieve the SMS message received---
                try{
                    Object[] pdus = (Object[]) bundle.get("pdus");
                    msgs = new SmsMessage[pdus.length];
                    for(int i=0; i<msgs.length; i++){
                        msgs[i] = SmsMessage.createFromPdu((byte[])pdus[i]);
                        msg_from = msgs[i].getOriginatingAddress();
                        String msgBody = msgs[i].getMessageBody();
                    }
                }catch(Exception e){
//                            Log.d("Exception caught",e.getMessage());
                }
            }
        }
    }
}

Original Post here.