Android™ Application Development - Bahar Ali Khan

Chapter 9: Peer-to-Peer Communication
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};
}
}
}
Object[] pdus = (Object[]) bundle.get(“pdus”);
SmsMessage[] messages = new SmsMessage[pdus.length];
for (int i = 0; i < pdus.length; i++)
messages[i] = SmsMessage.createFromPdu((byte[]) pdus[i]);
for (SmsMessage message : messages) {
if (message.getMessageBody().toLowerCase().contains(queryString)) {
requestReceived(message.getOriginatingAddress());
}
}
public void requestReceived(String _from) {}
8. Update the onCreate method of the Emergency Responder Activity to register the Broadcast
Receiver created in Step 7.
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
}
lock = new ReentrantLock();
requesters = new ArrayList();
wireUpControls();
IntentFilter filter = new IntentFilter(SMS_RECEIVED);
registerReceiver(emergencyResponseRequestReceiver, filter);
9. Update the requestReceived method stub so that it adds the originating number of each
status request’s SMS to the “requesters” Array List.
public void requestReceived(String _from) {
if (!requesters.contains(_from)) {
lock.lock();
requesters.add(_from);
aa.notifyDataSetChanged();
lock.unlock();
}
}
10. The Emergency Responder Activity should now be listening for status request SMS messages
and adding them to the List View as they arrive. Start the application and use the DDMS
emulator control to simulate incoming SMS messages, as shown in Figure 9-4.