Setting the title of multiple pin annotations

Setting the title of multiple pin annotations

Here is Question 3 of 3:
My app is a map view were the user can enter an address which will put a
purple pin on the map for the HQ. Secondly, the user can enter any
address, which will put as many red pins on the map as required. It is
easy to set a title and subtitle for the purple "HQ" pin, but how can the
user set a title for each individual red pin? I would like the user to be
able to enter a name as the title and an ID number as the subtitle for
each pin. Someone suggested to use UIAlertView (thank you) to do this, but
I would like to use a modal view because it can hold more textfields. How
can this be done?
Here is my code:
FieldMapController.m
#import "FieldMapController.h"
#import "CustomAnnotation.h"
#define HQ_latitude @"headquarters_latitude"
#define HQ_longitude @"headquarters_longitude"
#define HQ_coordinates @"headquarters_coordinates"
#import "PinSelectionViewController.h"
@interface FieldMapController ()
@end
@implementation FieldMapController
@synthesize mapView;
@synthesize searchBar;
@synthesize geocoder = _geocoder;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle
*)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
//ACCESS SAVED DATA FROM NSUSERDEFAULTS
-(void)viewWillAppear:(BOOL)animated{
NSUserDefaults *uDefaults = [NSUserDefaults standardUserDefaults];
if ([uDefaults boolForKey:@"headquarters_coordinates"])
{
CLLocationCoordinate2D savedCoordinate;
savedCoordinate.latitude = [uDefaults
doubleForKey:@"headquarters_latitude"];
savedCoordinate.longitude = [uDefaults
doubleForKey:@"headquarters_longitude"];
NSLog(@"Your HQ is at coordinates %f and
%f",savedCoordinate.latitude, savedCoordinate.longitude);
CustomAnnotation *annHq =[[CustomAnnotation alloc] init];
annHq.title=@"HQ";
annHq.subtitle=@"";
annHq.coordinate= savedCoordinate;
[mapView addAnnotation:annHq];
MKCoordinateRegion viewRegion = {{0.0, 0.0}, {0.0, 0.0}};
viewRegion.center.latitude = savedCoordinate.latitude;
viewRegion.center.longitude = savedCoordinate.longitude;
viewRegion.span.longitudeDelta = 0.5f;
viewRegion.span.latitudeDelta = 0.5f;
[self.mapView setRegion:viewRegion animated:YES];
[self.mapView setDelegate:self];
}
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
self.mapView.delegate = self;
self.searchBar.delegate = self;
//SEARCH BAR TOOLBAR WITH "DONE" AND "CANCEL" BUTTON
UIToolbar* searchToolbar = [[UIToolbar
alloc]initWithFrame:CGRectMake(0, 0, 320, 50)];
searchToolbar.barStyle = UIBarStyleBlackTranslucent;
searchToolbar.items = [NSArray arrayWithObjects:
[[UIBarButtonItem alloc]initWithTitle:@"Cancel"
style:UIBarButtonItemStyleBordered target:self
action:@selector(cancelSearchBar)],
[[UIBarButtonItem
alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace
target:nil action:nil],
nil];
[searchToolbar sizeToFit];
searchBar.inputAccessoryView = searchToolbar;
}
//WHEN PUSHING THE "CANCEL" BUTTON IN THE SEARCH BAR
-(void)cancelSearchBar
{
[searchBar resignFirstResponder];
searchBar.text = @"";
}
//PREPARE SEGUE FOR THE PIN SELECTOR VIEW
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if([segue.identifier isEqualToString:@"ShowPinChoicesSegue"])
{
PinSelectionViewController *pinVC = [segue
destinationViewController];
CustomAnnotation *selectedAnnotation = (CustomAnnotation *)sender;
pinVC.currentPinType = selectedAnnotation.pinType;
pinVC.delegate = self;
}
}
//WHAT HAPPENS WHEN THE "SEARCH" BUTTON AT THE SEARCH BAR KEYBOARD IS TAPPED
- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar
{
//Forward Geocoder
if (!self.geocoder)
{
self.geocoder = [[CLGeocoder alloc] init];
}
NSString *address = [NSString stringWithFormat:@"%@",
self.searchBar.text];
[self.geocoder geocodeAddressString:address
completionHandler:^(NSArray *placemarks, NSError *error) {
if ([placemarks count] > 0)
{
CLPlacemark *placemark = [placemarks objectAtIndex:0];
CLLocation *location = placemark.location;
CLLocationCoordinate2D coordinate = location.coordinate;
//Display Coordinates in Console
NSLog (@"%f %f", coordinate.latitude, coordinate.longitude);
MKCoordinateRegion region;
MKCoordinateSpan span;
span.latitudeDelta = 0.01;
span.longitudeDelta = 0.01;
region.span = span;
region.center = coordinate;
//Create Annotation with Callout Bubble that displays "No
Information"
MKPointAnnotation *annotation = [[MKPointAnnotation alloc] init];
[annotation setCoordinate:coordinate];
[annotation setTitle:@"No Information"];
[[self mapView] addAnnotation:annotation];
[self.mapView setRegion:region animated:TRUE];
[self.mapView regionThatFits:region];
//Dismiss the Search Bar Keyboard
[self.searchBar resignFirstResponder];
//Delete text in Search Bar
self.searchBar.text = @"";
}
}];
}
//CUSTOM ANNOTATION VIEW
- (MKAnnotationView *)mapView:(MKMapView *)mapView
viewForAnnotation:(id<MKAnnotation>)annotation
{
if ([annotation isKindOfClass:[MKUserLocation class]])
{
return nil;
}
if ([annotation isKindOfClass:[CustomAnnotation class]])
{
MKPinAnnotationView *annotationView =
(MKPinAnnotationView *)[self.mapView
dequeueReusableAnnotationViewWithIdentifier:((CustomAnnotation
*)annotation).annotationViewImageName];
if(annotationView == nil)
{
MKPinAnnotationView *customPinView =
[[MKPinAnnotationView alloc] initWithAnnotation:annotation
reuseIdentifier:((CustomAnnotation
*)annotation).annotationViewImageName];
if([[customPinView.annotation title] isEqualToString:@"HQ"])
{
//The pin for the HQ should be purple
customPinView.pinColor = MKPinAnnotationColorPurple;
}
else
{
//All other new pins should be "red" by default
customPinView.image = [UIImage
imageNamed:((CustomAnnotation
*)annotation).annotationViewImageName];
}
customPinView.canShowCallout = YES;
customPinView.animatesDrop = YES;
//Right Callout Accessory Button
UIButton *rightButton = [UIButton
buttonWithType:UIButtonTypeDetailDisclosure];
customPinView.rightCalloutAccessoryView = rightButton;
return customPinView;
}
else
{
annotationView.annotation = annotation;
}
return annotationView;
}
return nil;
}
//SHOW ACCESSORY VIEW WHEN BUTTON ON CALLOUT BUBBLE IS TAPPED
-(void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView
*)view calloutAccessoryControlTapped:(UIControl *)control
{
if (![view.annotation isKindOfClass:[CustomAnnotation class]])
return;
CustomAnnotation *customAnnotation = (CustomAnnotation *)view.annotation;
if (control.tag == 0)
{
[self performSegueWithIdentifier:@"ShowPinChoicesSegue"
sender:customAnnotation];
}
else
{
[self onRightCalloutAccessoryViewTouched:control];
}
}
-(void)mapView:(MKMapView *)mapView
didSelectAnnotationView:(MKAnnotationView *)view
{
if(![view.annotation isKindOfClass:[CustomAnnotation class]])
return;
if (!view.rightCalloutAccessoryView)
{
UIButton *rightViewButton = [[UIButton alloc]
initWithFrame:CGRectMake(0.0, 0.0, 48.0, 32.0)];
[rightViewButton addTarget:self
action:@selector(onRightCalloutAccessoryViewtouched:)
forControlEvents:UIControlEventTouchUpInside];
rightViewButton.tag = 1;
view.rightCalloutAccessoryView = rightViewButton;
}
}
-(void)onRightCalloutAccessoryViewTouched:(id)sender
{
CustomAnnotation *selectedAnnotation = (CustomAnnotation
*)[mapView.selectedAnnotations objectAtIndex:0];
[self performSegueWithIdentifier:@"ShowPinChoicesSegue"
sender:selectedAnnotation];
}
- (void)viewDidUnload
{
self.mapView = nil;
self.searchBar = nil;
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
}
//BUTTON TO SELECT NEW HQ
- (IBAction)selectHq:(UIBarButtonItem *)sender
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Select
Headquarters"
message:@"Enter Address"
delegate:self
cancelButtonTitle:@"Cancel"
otherButtonTitles:@"Ok", nil];
alert.alertViewStyle = UIAlertViewStylePlainTextInput;
[[alert textFieldAtIndex:0] setKeyboardType:UIKeyboardTypeDefault];
[alert show];
}
//REMOVING ALL PINS EXCEPT USER LOCATION
- (IBAction)resetPins:(UIBarButtonItem *)sender
{
id userLocation = [mapView userLocation];
NSMutableArray *pins = [[NSMutableArray alloc] initWithArray:[mapView
annotations]];
if ( userLocation != nil )
{
[pins removeObject:userLocation]; //avoid removing user location
}
[mapView removeAnnotations:pins];
pins = nil;
[[NSUserDefaults standardUserDefaults]
removeObjectForKey:HQ_coordinates];
[[NSUserDefaults standardUserDefaults] removeObjectForKey:HQ_longitude];
[[NSUserDefaults standardUserDefaults] removeObjectForKey:HQ_latitude];
}
//ALERT VIEW TO ENTER ADDRESS OF HQ
- (void)alertView:(UIAlertView *)alertView
clickedButtonAtIndex:(NSInteger)buttonIndex
{
if (buttonIndex != alertView.cancelButtonIndex)
{
UITextField *field = [alertView textFieldAtIndex:0];
field.placeholder = @"Enter HQ Address";
if (!self.geocoder)
{
self.geocoder = [[CLGeocoder alloc] init];
}
NSString *hqAddress = [NSString stringWithFormat:@"%@", field.text];
[self.geocoder geocodeAddressString:hqAddress
completionHandler:^(NSArray *placemarks, NSError *error) {
if ([placemarks count] > 0)
{
CLPlacemark *placemark = [placemarks objectAtIndex:0];
CLLocation *location = placemark.location;
CLLocationCoordinate2D hqCoordinate = location.coordinate;
NSLog (@"Your new HQ is at coordinates %f and %f",
hqCoordinate.latitude, hqCoordinate.longitude);
MKCoordinateRegion region;
MKCoordinateSpan span;
span.latitudeDelta = 0.01;
span.longitudeDelta = 0.01;
region.span = span;
region.center = hqCoordinate;
MKPointAnnotation *hqAnnotation = [[MKPointAnnotation
alloc] init];
[hqAnnotation setCoordinate:hqCoordinate];
[hqAnnotation setTitle:@"HQ"];
[[self mapView] addAnnotation:hqAnnotation];
[self.mapView setRegion:region animated:TRUE];
[self.mapView regionThatFits:region];
//Save to NSUserDefaults
NSUserDefaults *uDefaults = [NSUserDefaults
standardUserDefaults];
[uDefaults setDouble:hqCoordinate.latitude
forKey:HQ_latitude];
[uDefaults setDouble:hqCoordinate.longitude
forKey:HQ_longitude];
[uDefaults setBool:YES forKey:HQ_coordinates];
[uDefaults synchronize];
}
}];
}
else
{
//any actions for "Cancel"
}
}
//DEFINES WHAT SELECTING THE NEW PIN COLOR DOES
-(void)userDidSelectPinType:(AnnotationPinType)aPinType
{
CustomAnnotation *selectedAnnotation = (CustomAnnotation
*)[mapView.selectedAnnotations objectAtIndex:0];
selectedAnnotation.pinType = aPinType;
[mapView removeAnnotation:selectedAnnotation];
[mapView addAnnotation:selectedAnnotation];
[self.navigationController dismissViewControllerAnimated:YES
completion:nil];
}
@end
CustomAnnotation.m
#import "CustomAnnotation.h"
#import <CoreLocation/CoreLocation.h>
@implementation CustomAnnotation
@synthesize title, subtitle, coordinate;
@synthesize pinType;
-(id) initWithCoordinate:(CLLocationCoordinate2D)aCoordinate
title:(NSString *)aTitle subtitle:(NSString *)aSubtitle
{
if ((self = [super init]))
{
self.title = aTitle;
self.coordinate = aCoordinate;
self.subtitle = aSubtitle;
}
return self;
}
- (NSString *)annotationViewImageName
{
switch (self.pinType)
{
case 0:
return @"Red_Pin.png";
break;
case 1:
return @"Green_Pin.png";
break;
case 2:
return @"Purple_Pin.png";
break;
default:
break;
}
}
- (NSString *)title
{
return title;
}
- (NSString *)subtitle
{
return subtitle;
}
@end
PinSelectionViewController.m
#import "PinSelectionViewController.h"
@interface PinSelectionViewController ()
@end
@implementation PinSelectionViewController
@synthesize delegate;
@synthesize currentPinType;
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - Table view data source
- (void)tableView:(UITableView *) tableView
willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath
*)indexPath
{
if(indexPath.row ==currentPinType)
cell.accessoryType = UITableViewCellAccessoryCheckmark;
}
#pragma mark - Table view delegate
- (void)tableView:(UITableView *)tableView
didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[self.delegate userDidSelectPinType:indexPath.row];
}
@end
PinSelectionDelegateProtocol.h
#import <Foundation/Foundation.h>
typedef enum
{
RED_PIN,
GREEN_PIN,
PURPLE_PIN
} AnnotationPinType;
@protocol PinSelectionDelegate <NSObject>
@required
-(void)userDidSelectPinType:(AnnotationPinType)aPinType;
@end