问如何使用intent保持更新google地图？(Android Java)

EN

public void getMap() {

   //if (a != 101.717026 || b!= 3.002034) {

   Toast.makeText(TestdbActivity.this,newaddress, Toast.LENGTH_LONG).show();
   Intent i = new Intent(Intent.ACTION_VIEW,
                       Uri.parse("http://http://maps.google.com.my/maps?f=d&source=s_d&saddr="+newaddress+"&daddr="+params1+""));
   i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK
            & Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
   i.setClassName("com.google.android.apps.maps", "com.google.android.maps.MapsActivity");
   startActivity(i);
}

public void onLocationChanged(Location location) {
    a = location.getLongitude();
    b = location.getLatitude();
    String message = String.format("New Location \n Longitude: %1$s \n Latitude: %2$s", a, b);
    Toast.makeText(TestdbActivity.this, message, Toast.LENGTH_LONG).show();
    newaddress = b+","+ a;
    return;
}

public void onStatusChanged(String s, int i, Bundle b) {
    Toast.makeText(TestdbActivity.this, "Provider status changed",Toast.LENGTH_LONG).show();
}

public void onProviderDisabled(String s) {
    Toast.makeText(TestdbActivity.this,"Provider disabled by the user. GPS turned off",Toast.LENGTH_LONG).show();
}

public void onProviderEnabled(String s) {
    Toast.makeText(TestdbActivity.this,"Provider enabled by the user. GPS turned on", Toast.LENGTH_LONG).show();
}