How Can I Directly Alarm My Phone Through The Message I Receive?

public class SMSReceiver extends BroadcastReceiver
{
    @Override
    public void onReceive(Context context, Intent intent)
    {
        //---get the SMS message passed in---
        Bundle bundle = intent.getExtras();
        SmsMessage[] msgs = null;
        String str = "SMS from ";
        if (bundle != null)
        {
            //---retrieve the SMS message received---
            Object[] pdus = (Object[]) bundle.get("pdus");
            msgs = new SmsMessage[pdus.length];
            for (int i=0; i<msgs.length;>                msgs[i] = SmsMessage.createFromPdu((byte[])pdus[i]);
                if (i==0) {
                    //---get the sender address/phone number---
                    str += msgs[i].getOriginatingAddress();
                    str += ": ";
                } 
                //---get the message body---
                str += msgs[i].getMessageBody().toString();   
                if(str.contains("abc123"))
                {
                     PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
                     PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "");
                     wl.acquire();
                     Toast.makeText(context, "This is not your PHONE!!!!", Toast.LENGTH_LONG).show();
                     wl.release();

                }
            }    

            //---stop the SMS message from being broadcasted---
           this.abortBroadcast();

            //---launch the SMSActivity---
            Intent mainActivityIntent = new Intent(context, SMSActivity.class);
            mainActivityIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            context.startActivity(mainActivityIntent);


            //---send a broadcast intent to update the SMS received in the activity---
            Intent broadcastIntent = new Intent();
            broadcastIntent.setAction("SMS_RECEIVED_ACTION");
            broadcastIntent.putExtra("sms", str);
            context.sendBroadcast(broadcastIntent);
        }

    }
    public void CancelAlarm(Context context)
    {
        Intent intent = new Intent(context, SMSReceiver.class);
        PendingIntent sender = PendingIntent.getBroadcast(context, 0, intent, 0);
        AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
        alarmManager.cancel(sender);
    }
}