Exercise : 21
Create an application to send message between two emulators.
Screen Shot:

XML :
main.xml :

JAVA :

TwentyOneActivity.java :

package kmn.TwentyOne;
import android.app.Activity;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.telephony.SmsManager;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class TwentyOneActivity extends Activity 
{
 /**  @author Y@@D  */
 Button btnSendSMS;
 EditText txtPhoneNo;
 EditText txtMessage;

 //@Override
    public void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        btnSendSMS = (Button) findViewById(R.id.btnSendSMS);
        txtPhoneNo = (EditText) findViewById(R.id.txtPhoneNo);
        txtMessage = (EditText) findViewById(R.id.txtMessage);
        
        /*
        Intent sendIntent = new Intent(Intent.ACTION_VIEW);
        sendIntent.putExtra("sms_body", "Content of the SMS goes here..."); 
        sendIntent.setType("vnd.android-dir/mms-sms");
        startActivity(sendIntent);
        */
                
        btnSendSMS.setOnClickListener(new View.OnClickListener() 
        {
            public void onClick(View v) 
            {             
             String phoneNo = txtPhoneNo.getText().toString();
             String message = txtMessage.getText().toString();              
                if (phoneNo.length()>0 && message.length()>0)                
                    sendSMS(phoneNo, message);                
                else
                 Toast.makeText(getBaseContext(),"Please enter both phone number and message.", Toast.LENGTH_SHORT).show();
            }
        });        
    }
    
    //---sends a SMS message to another device---
    private void sendSMS(String phoneNumber, String message)
    {      
      
     String SENT = "SMS_SENT";
     String DELIVERED = "SMS_DELIVERED";
     
        PendingIntent sentPI = PendingIntent.getBroadcast(this, 0, new Intent(SENT),0);
        
        
        PendingIntent deliveredPI = PendingIntent.getBroadcast(this, 0, new Intent(DELIVERED), 0);
     
        //---when the SMS has been sent---
        registerReceiver(new BroadcastReceiver()
        {
  // @Override
   public void onReceive(Context arg0, Intent arg1) 
   {
    switch (getResultCode())
    {
        case Activity.RESULT_OK:
         Toast.makeText(getBaseContext(), "SMS sent",Toast.LENGTH_SHORT).show();
         break;
        case SmsManager.RESULT_ERROR_GENERIC_FAILURE:
         Toast.makeText(getBaseContext(), "Generic failure", Toast.LENGTH_SHORT).show();
         break;
        case SmsManager.RESULT_ERROR_NO_SERVICE:
         Toast.makeText(getBaseContext(), "No service",Toast.LENGTH_SHORT).show();
         break;
        case SmsManager.RESULT_ERROR_NULL_PDU:
         Toast.makeText(getBaseContext(), "Null PDU",Toast.LENGTH_SHORT).show();
         break;
        case SmsManager.RESULT_ERROR_RADIO_OFF:
         Toast.makeText(getBaseContext(), "Radio off",Toast.LENGTH_SHORT).show();
         break;
    }
   }
        }, new IntentFilter(SENT));
        
        //---when the SMS has been delivered---
        registerReceiver(new BroadcastReceiver()
        {
   //@Override
   public void onReceive(Context arg0, Intent arg1)
   {
    switch (getResultCode())
    {
        case Activity.RESULT_OK:
         Toast.makeText(getBaseContext(), "SMS delivered", Toast.LENGTH_SHORT).show();
         break;
        case Activity.RESULT_CANCELED:
         Toast.makeText(getBaseContext(), "SMS not delivered", Toast.LENGTH_SHORT).show();
         break;         
    }
   }
        }, new IntentFilter(DELIVERED));        
     
        SmsManager sms = SmsManager.getDefault();
        sms.sendTextMessage(phoneNumber, null, message, sentPI, deliveredPI);               
    }    
}

SmsReceiver.java :

package kmn.TwentyOne;
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 SmsReceiver extends BroadcastReceiver
{
	/**  @author Y@@D */
	//@Override
	public void onReceive(Context context, Intent intent) 
	{
        //---get the SMS message passed in---
        Bundle bundle = intent.getExtras();        
        SmsMessage[] msgs = null;
        String str = "";            
        if (bundle != null)
        {
            //---retrieve the SMS message received---
            Object[] pdus = (Object[]) bundle.get("pdus");
            msgs = new SmsMessage[pdus.length];            
            for (int i=0; i

Step to Creat two emulator and send sms.

1)goto windows->Android SDK and AVD Mangaer.

2)creat two emulator and give the different name.

3)start emulator by clicking start button

3)now enter the emulator number to phone number and send it.

Note:- see the give OutPut Image..

Enjoy.........