in Android Broadcast Receivers are used to listen for broadcast Intents. A Broadcast Receiver needs to be registered, either in code or within the application manifest. (in this case is registered in the manifest)
When registering a Broadcast Receiver you must use an Intent Filter to specify which Intents it is listening for.
We use BroadcastReceiver to intercept SMS.
See the code below
import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.os.Bundle; import android.telephony.SmsMessage; import android.widget.Toast; public class SMSBroadcastReceiver extends BroadcastReceiver{ @Override public void onReceive(Context context, Intent intent) { Bundle bundle = intent.getExtras(); SmsMessage[] msgs = null; StringBuilder str = new StringBuilder(); if (bundle != null) { // --- retrieve the received SMS here --- 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]); str.append("SMS from " + msgs[i].getOriginatingAddress()); str.append(" :"); str.append(msgs[i].getMessageBody().toString()); str.append("\n"); } // ...we show sms here... Toast.makeText(context, str.toString(), Toast.LENGTH_SHORT).show(); } } }
As you can see, we extends from BroadcastReceiver and override the method onReceive where we retrieve information about the received SMS.
In the manifest you must define the RECEIVE_SMS uses-permission, register the receiver (our class SMSBroadcastListener) and his intent-filter (SMS_RECEIVED):
They will be started automatically when a matching Intent is broadcast, in practice when received an SMS you will see a Toast with SMS information.
The blog gave me idea to intercept sms with the help of broad cast receiver my sincere thanks for sharing this post and please continue to share this post
ReplyDeleteAndroid Training in Chennai