Google map marker update from sms receiver transmitter

3 , :

. SMS BroadcastReceiver

. MapView ItemizedOverlay

. BroadcastReceiver , .

A: SMS

• BroadcastReceiver:

  public class SMSBroadcastReceiver extends BroadcastReceiver
  {
      private static final String SMS_RECEIVED = "android.provider.Telephony.SMS_RECEIVED";
  
      @Override 
      public void onReceive(Context context, Intent intent) 
      {
          if (intent.getAction().equals (SMS_RECEIVED)) 
          {
              Bundle bundle = intent.getExtras();
              if (bundle != null) 
              {
                  Object[] pdusData = (Object[])bundle.get("pdus");
                  for (int i = 0; i < pdus.length; i++) 
                  {
                      SmsMessage message = SmsMessage.createFromPdu((byte[])pdus[i]);
  
                      /* ... extract lat/long from SMS here */
                  }
              }
          }
      }
  }
  

• :

  <manifest ... > 
          <application ... >
                  <receiver 
                          android:name=".SMSBroadcastReceiver"
                          android:enabled="true"
                          android:exported="true">
                          <intent-filter>
                                  <action android:name="android.provider.Telephony.SMS_RECEIVED"></action>
                          </intent-filter>
                  </receiver>
          </application>
  </manifest>
  

( : Android - SMS-)

B:

• , ItemizedOverlay, MapView , :

  class LocationOverlay extends ItemizedOverlay<OverlayItem>
  {
          public LocationOverlay(Drawable marker) 
          {         
                  /* Initialize this class with a suitable `Drawable` to use as a marker image */
  
                  super( boundCenterBottom(marker));
          }
  
          @Override     
          protected OverlayItem createItem(int itemNumber) 
          {         
                  /* This method is called to query each overlay item. Change this method if
                     you have more than one marker */
  
                  GeoPoint point = /* ... the long/lat from the sms */
                  return new OverlayItem(point, null, null);     
          }
  
     @Override 
     public int size() 
     {
                  /* Return the number of markers here */
                  return 1; // You only have one point to display
     } 
  }
  

• , :

  public class CustomMapActivity extends MapActivity 
  {     
      MapView map;
      @Override
  
          public void onCreate(Bundle savedInstanceState) 
          {     
              super.onCreate(savedInstanceState);         
              setContentView(R.layout.main);      
  
              /* We're assuming you've set up your map as a resource */
              map = (MapView)findViewById(R.id.map);
  
              /* We'll create the custom ItemizedOverlay and add it to the map */
              LocationOverlay overlay = new LocationOverlay(getResources().getDrawable(R.drawable.icon));
              map.getOverlays().add(overlay);
          }
  }
  

C:

(. BroadcastReceiver). MapActivity , . MapActivity , -, .

• ( CustomMapActivity):

  private final String UPDATE_MAP = "com.myco.myapp.UPDATE_MAP"
  

• BroadcastReceiver ( CustomMapActivity):

  private  BroadcastReceiver updateReceiver =  new BroadcastReceiver()
  {
      @Override
      public void onReceive(Context context, Intent intent) 
      {
          // custom fields where the marker location is stored
          int longitude = intent.getIntExtra("long");
          int latitude = intent.getIntExtra("lat");
  
          // ... add the point to the `LocationOverlay` ...
          // (You will need to modify `LocationOverlay` if you wish to track more
          // than one location)
  
          // Refresh the map
  
          map.invalidate();
      }
  }
  

• BroadcastReceiver ( CustomMapActivity.onCreate):

  IntentFilter filter = new IntentFilter();
  filter.addAction(UPDATE_MAP);
  registerReceiver(updateReceiver /* from step 2 */, filter);
  

• BroadcastReceiver ( SMSBroadcastReceiver.onReceive):

  Intent updateIntent = new Intent();
  updateIntent.setAction(UPDATE_MAP);
  updateIntent.putExtra("long", longitude);
  updateIntent.putExtra("lat", latitude);
  context.sendBroadcast(updateIntent);