I follow some tutorial and mix my awful code. Now I can get my current location. And when I tap on a button it will trigger a pin which locates on my current location. If I tap on the pin, the message shows address of my current.
I have two question:
Why I can not get a more precise address? Now I receive address with country, city and district, but without name of the road.
How can I get the "text" of the address of current location? I want to display the address in a UILabel elsewhere but don't know how to do that.
Thank you very much!
here's the .h
#import <UIKit/UIKit.h>
#import "MapKit/MapKit.h"
#import "CoreLocation/CoreLocation.h"
@interface UserLocationAddressViewController : UIViewController <MKMapViewDelegate,MKReverseGeocoderDelegate>
{
MKMapView *userLocationAddMapView;
CLLocationManager *locationManager;
}
@property (nonatomic, retain) MKMapView *userLocationAddMapView;
-(IBAction)getUserLocationAddress:(id)sender;
@end
And Here's .m
#import "UserLocationAddressViewController.h"
@implementation UserLocationAddressViewController
@synthesize userLocationAddMapView;
-(IBAction)getUserLocationAddress:(id)sender
{
MKReverseGeocoder *geoCoder = [[MKReverseGeocoder alloc] initWithCoordinate:locationManager.location.coordinate];
geoCoder.delegate = self;
[geoCoder start];
}
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
}
-(void)dealloc
{
[userLocationAddMapView release];
[super dealloc];
}
#pragma mark - View lifecycle
- (void)viewDidLoad
{
[super viewDidLoad];
self.userLocationAddMapView = [[MKMapView alloc] initWithFrame:CGRectMake(0, 0, 320, 460)];
userLocationAddMapView.showsUserLocation = YES;
userLocationAddMapView.delegate = self;
self.userLocationAddMapView.mapType = MKMapTypeStandard;
locationManager = [[CLLocationManager alloc] init];
[locationManager startUpdatingLocation];
CLLocationCoordinate2D coordinate = locationManager.location.coordinate;
MKCoordinateRegion mapRegion;
mapRegion.center = coordinate;
MKCoordinateSpan mapSpan;
mapSpan.latitudeDelta = 0.006;
mapSpan.longitudeDelta = 0.006;
mapRegion.span = mapSpan;
[userLocationAddMapView setRegion:mapRegion animated:YES];
self.userLocationAddMapView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
[self.view addSubview:self.userLocationAddMapView];
self.navigationItem.rightBarButtonItem = [[[UIBarButtonItem alloc] initWithTitle:@"Get Add" style:UIBarButtonItemStylePlain target:self action:@selector(getUserLocationAddress:)] autorelease];
}
-(void)reverseGeocoder:(MKReverseGeocoder *)geocoder didFindPlacemark:(MKPlacemark *)placemark
{
NSLog(@"placemark %f %f", placemark.coordinate.latitude, placemark.coordinate.longitude);
NSLog(@"addressDictionary %@", placemark.addressDictionary);
[userLocationAddMapView addAnnotations:[NSArray arrayWithObjects:placemark, nil]];
[geocoder release];
}
-(void)reverseGeocoder:(MKReverseGeocoder *)geocoder didFailWithError:(NSError *)error
{
NSLog(@"reverseGeocoder fail");
[geocoder release];
}
- (void)viewDidUnload
{
[super viewDidUnload];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
@end
You shouldn't really use MKReverseGeocoder as it has been depreciated by apple in iOS5, you should really use CLGeocoder. The following example will return a whole tonne of information which is based in the NSArray *placemarks, you can then iterate through them and call the keys in the assoc array.
#import "MapPoint.h"
@implementation MapPoint
@synthesize coordinate, title, dateAdded, subtitle, city, reverseGeo;
-(id)initWithCoordinates:(CLLocationCoordinate2D)c
title:(NSString *)t {
self = [super init];
if (self) {
coordinate = c;
[self setTitle: t];
[self setCurrentCity: [[CLLocation alloc] initWithLatitude:c.latitude longitude:c.longitude]];
[self setDateAdded: [[NSDate alloc] init]];
}
return self;
}
-(void)setCurrentCity: (CLLocation *)loc {
if (!self.reverseGeo) {
self.reverseGeo = [[CLGeocoder alloc] init];
}
[self.reverseGeo reverseGeocodeLocation: loc completionHandler:
^(NSArray *placemarks, NSError *error) {
for (CLPlacemark *placemark in placemarks) {
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setTimeStyle:NSDateFormatterNoStyle];
[formatter setDateStyle:NSDateFormatterLongStyle];
NSString *dateString = [formatter stringFromDate: [self dateAdded]];
[self setSubtitle: [dateString stringByAppendingString: [placemark locality] ] ];
}
}];
}
@end