Map View

map_view.rb

class MapViewController < UIViewController

  attr_accessor :selected_show

  def didReceiveMemoryWarning
    super
    AH.alert("Memory issue", "Received memory warning.")
  end

  def viewDidLoad
    self.customize_background
    self.set_venue_map
  end
  
  def viewDidUnload
    @venue_map_view.delegate = nil
    @venue_map_view = nil
  end
  
  def viewDidAppear(animated)
    super
  end
  
  def viewDidDisappear(animated)
    super
  end
  
  def customize_background
    self.view.backgroundColor = ThemeManager.instance.theme.white_background
  end
  
  def set_venue_map
    @venue_map_view = MKMapView.alloc.initWithFrame(view.bounds)
    @venue_map_view.mapType           = MKMapTypeStandard
    @venue_map_view.scrollEnabled     = true
    @venue_map_view.showsUserLocation = true
    @venue_map_view.autoresizingMask  = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight
    @venue_map_view.delegate          = self
    @venue_map_view                   = self.set_map_region(self.venue_location)
    view.addSubview(@venue_map_view)
    @venue_map_view = self.set_venue_map_annotation
  end
  
  def set_venue_map_annotation
    annotation = self.map_annotation
    @venue_map_view.addAnnotation(annotation)
    selector_array = []
    selector_array << @venue_map_view
    selector_array << annotation
    self.performSelector("select_annotation:", withObject:selector_array, afterDelay:1.5)
  end
  
  def select_annotation(selector_array)
    @venue_map_view = selector_array[0]
    annotation = selector_array[1]
    @venue_map_view.selectAnnotation(annotation, animated:true)
  end

  def set_map_region(location)
    region = MKCoordinateRegionMake(location, MKCoordinateSpanMake(0.03, 0.03)) 
    @venue_map_view.setRegion(region)
  end

  def map_annotation
    venue_title = @selected_show["venue"]["name"]
    venue_address = AH.show_address_city_state(@selected_show["venue"])
    VenueAnnotation.alloc.initWithCoordinates(self.venue_location, title:venue_title, subTitle:venue_address)
  end

  def venue_location
    CLLocationCoordinate2DMake(self.venue_lat, self.venue_lng)
  end

  def venue_lat
    @selected_show["venue"]["location"].latitude
  end

  def venue_lng
    @selected_show["venue"]["location"].longitude
  end

end