Hi all i have a mysql database that consists of 7 columns and i have a script that reads it and extracts the data as JSON which i have pulled into an NSMutableArray, I want to be able to use this array to setup annotations on my Map but i'm not sure what to do here, as you can see i have defined one annotation here which shows up no problem but i'm honestly not sure how to show the NSMutableArray items? The NSMutable array will have more information than needed for the Annotations, I only need, coordinate, title and subtitle so how can i go about doing this? Here is my code so far:
hazards.h
hazards.m
viewController.h
viewController.m
Many Thanks in advance
hazards.h
Code:
#import <Foundation/Foundation.h>
#import <MapKit/MapKit.h>
@interface Hazards : NSObject <MKAnnotation>
@property (nonatomic, assign) CLLocationCoordinate2D coordinate;
@property (nonatomic, copy) NSString *title;
@property (nonatomic, copy) NSString *subtitle;
@property (nonatomic, strong) NSString * ID;
@property (nonatomic, strong) NSString * ROUTE;
@property (nonatomic, strong) NSString * ADDRESS;
@property (nonatomic, strong) NSString * LATITUDE;
@property (nonatomic, strong) NSString * LONGITUDE;
@property (nonatomic, strong) NSString * HAZARD;
@property (nonatomic, strong) NSString * RISK;
// Methods
- (id) initWithID: (NSString *) hazardsID andROUTE: (NSString *) hazardsROUTE andADDRESS: (NSString *) hazardsADDRESS andLATITUDE: (NSString *) hazardsLATITUDE andLONGITUDE: (NSString *) hazardsLONGITUDE andHAZARD: (NSString *) hazardsHAZARD andRISK: (NSString *) hazardsRISK;
@endhazards.m
Code:
#import "Hazards.h"
@implementation Hazards
@synthesize coordinate, title, subtitle, ID, ROUTE, ADDRESS, LATITUDE, LONGITUDE, HAZARD, RISK;
- (id) initWithID: (NSString *) hazardsID andROUTE: (NSString *) hazardsROUTE andADDRESS: (NSString *) hazardsADDRESS andLATITUDE: (NSString *) hazardsLATITUDE andLONGITUDE: (NSString *) hazardsLONGITUDE andHAZARD: (NSString *) hazardsHAZARD andRISK: (NSString *) hazardsRISK {
self = [super init];
if (self)
{
ID = hazardsID;
ROUTE = hazardsROUTE;
ADDRESS = hazardsADDRESS;
LATITUDE = hazardsLATITUDE;
LONGITUDE = hazardsLONGITUDE;
HAZARD = hazardsHAZARD;
RISK = hazardsRISK;
}
return self;
}
@endviewController.h
Code:
#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>
#import "Hazards.h"
@interface ViewController : UIViewController
@property (nonatomic, strong) NSMutableArray *json;
@property (nonatomic, strong) NSMutableArray *hazardsArray;
@property (weak, nonatomic) IBOutlet MKMapView *mapView;
#pragma mark - Methods
-(void) retrieveData;
@endviewController.m
Code:
#import "ViewController.h"
#import "Hazards.h"
@interface ViewController ()
@end
// Railway Street Ballymena Coordinates
#define BALLYMENA_LATITUDE 54.857719;
#define BALLYMENA_LONGITUDE -6.280654;
// Span
#define THE_SPAN 0.01f;
#define getDataURL @"localhost:8888/rmb/json.php"
@implementation ViewController
@synthesize json, hazardsArray, mapView;
- (void)viewDidLoad
{
[super viewDidLoad];
// Create the region
MKCoordinateRegion myRegion;
// Center
CLLocationCoordinate2D center;
center.latitude = BALLYMENA_LATITUDE;
center.longitude = BALLYMENA_LONGITUDE;
//Span
MKCoordinateSpan span;
span.latitudeDelta = THE_SPAN;
span.longitudeDelta = THE_SPAN;
myRegion.center = center;
myRegion.span = span;
// Set our mapview
[mapView setRegion:myRegion animated: YES];
// Annotation
NSMutableArray *locations = [[NSMutableArray alloc] init];
CLLocationCoordinate2D location;
Hazards *myAnn;
// Pin to show Royal Mail Ballymena delivery office
myAnn = [[Hazards alloc] init];
location.latitude = BALLYMENA_LATITUDE;
location.longitude = BALLYMENA_LONGITUDE;
myAnn.coordinate = location;
myAnn.title = @"Royal Mail Ballymena";
myAnn.subtitle = @"111, Railway Street";
[locations addObject:myAnn];
[self.mapView addAnnotations:locations];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - Methods
-(void) retrieveData {
NSURL *url = [NSURL URLWithString:getDataURL];
NSData *data = [NSData dataWithContentsOfURL:url];
json = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:nil];
// Setup our hazards array
hazardsArray = [[NSMutableArray alloc] init];
for (int i =0; i < json.count; i++) {
// Create hazard object
NSString *hazardsID = [[json objectAtIndex:i] objectForKey:@"ID"];
NSString *hazardsROUTE = [[json objectAtIndex:i] objectForKey:@"ROUTE"];
NSString *hazardsADDRESS = [[json objectAtIndex:i] objectForKey:@"ADDRESS"];
NSString *hazardsLATITUDE = [[json objectAtIndex:i] objectForKey:@"LATITUDE"];
NSString *hazardsLONGITUDE = [[json objectAtIndex:i] objectForKey:@"LONGITUDE"];
NSString *hazardsHAZARD = [[json objectAtIndex:i] objectForKey:@"HAZARD"];
NSString *hazardsRISK = [[json objectAtIndex:i] objectForKey:@"RISK"];
Hazards *myHazards = [[Hazards alloc] initWithID:hazardsID andROUTE:hazardsROUTE andADDRESS:hazardsADDRESS andLATITUDE:hazardsLATITUDE andLONGITUDE:hazardsLONGITUDE andHAZARD:hazardsHAZARD andRISK:hazardsRISK];
// Add our hazards object to our hazards array
[hazardsArray addObject:myHazards];
}
// [self.mapView addAnnotation:hazardsArray];
}
@endMany Thanks in advance
I'll have another attempt and see what i can come up with and if need be i'll come back to you for more hints hehehehe