How do i set a listener in an activity from another class?

Question

I am working on an application that needs to read an incoming message. Now, i found out that i need to use the onReceive method from the BroadcastReceiver class. Now i got to know that java does not allow extending two classes, so how do i get it working, i have been stuck on this from a long time, please help! Also if there is some other way to do this, please do quote.

public class SMS extends Activity { Button btnSendSMS; EditText txtPhoneNo; EditText txtMessage;

 /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.sms); btnSendSMS = (Button) findViewById(R.id.btnSendSMS); txtPhoneNo = (EditText) findViewById(R.id.txtPhoneNo); btnSendSMS.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { String phoneNo = txtPhoneNo.getText().toString(); if (phoneNo.length()>0) sendSMS(phoneNo, phoneNo); else Toast.makeText(getBaseContext(), "Please enter a valid Phone Number.", Toast.LENGTH_SHORT).show(); } }); } private void sendSMS(String phoneNumber, String message) { PendingIntent pi = PendingIntent.getActivity(this, 0, new Intent(this, SMS.class), 0); SmsManager sms = SmsManager.getDefault(); sms.sendTextMessage(phoneNumber, null, message, pi, null); } Context context = getApplicationContext(); Intent intent = new Intent(); object.onReceive(context, intent); } 

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()); Toast.makeText(context, "HI", Toast.LENGTH_SHORT).show(); if (intent.getAction().equals(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) { Toast.makeText(context, "Message recieved: " + messages[0].getMessageBody(), 7000).show(); } } } } } 

Answer 1

You don't need to extend two classes (which is not possible and never required in java) to achieve your goal. For getting the last message simply create a static message variable, lets say in your SMSBroadcastReceiver and set that variable to latest message received in onreceive. This static variable can be accessed throughout your app using SmsReceiver.latestmessage