
var window = Ti.UI.createWindow();
var mapView = Ti.Map.createView({
  mapType: Ti.Map.STANDARD_TYPE,
  region:{
    latitude:33.74511, longitude:-84.38993,
    latitudeDelta:0.5, longitudeDelta:0.5
  },
  animate:true,
  regionFit:true,
  userLocation:true
});
var button = Ti.UI.createButton({
  title: "Changer",
  width: 100,
  height: 40,
  bottom: 0
});
button.addEventListener('click', function() {
  mapView.setLocation({
    latitude:37.337681,
    longitude:-122.038193,
    animate:true,
    latitudeDelta:0.04,
    longitudeDelta:0.04
  });
});

var changeNumber = 0;

mapView.addEventListener('regionChanged', function(e) {
  button.title = "La region change " + changeNumber;
  var latitude = e.latitude;
  var longitude = e.longitude;
  var latitudeDelta = e.latitudeDelta;
  var longitudeDelta = e.longitudeDelta;
  changeNumber++;
});

window.add(mapView);
window.add(button);
window.open();