Map won't update to new location in iOS 7 - ios

Question

I'm doing the homework from the Big Nerd Ranch Guide. I can't get my map to show a new location. I know I'm using one deprecated method but I was having a problem using NSArray (the deprecated method is locationManager:didUpdateToLocation:fromLocation). Any pointers would be appreciated.
Here's my code:
WhereamiViewController.h:
// WhereamiViewController.h
// Whereami
//
// Created by Meghan on 2/28/14.
// Copyright (c) 2014 Meghan. All rights reserved.
//
#import <UIKit/UIKit.h>
#import <CoreLocation/CoreLocation.h>
#import <MapKit/MapKit.h>
#interface WhereamiViewController : UIViewController <CLLocationManagerDelegate, MKMapViewDelegate, UITextFieldDelegate>
{
CLLocationManager *locationManager;
IBOutlet UITextField *locationTitleField;
IBOutlet UIActivityIndicatorView *activityIndicator;
IBOutlet MKMapView *worldView;
}
- (void)findLocation;
- (void)foundLocation:(CLLocation *)loc;
#end
WhereamiViewController.m:
// WhereamiViewController.m
// Whereami
//
// Created by Meghan on 2/28/14.
// Copyright (c) 2014 Meghan. All rights reserved.
//
#import "WhereamiViewController.h"
#import "BNRMapPoint.h"
#interface WhereamiViewController ()
#end
#implementation WhereamiViewController
- (void)findLocation
{
[locationManager startUpdatingLocation];
[activityIndicator startAnimating];
[locationTitleField setHidden:YES];
}
- (void)foundLocation:(CLLocation *)loc
{
CLLocationCoordinate2D coord = [loc coordinate];
//Create an instance of BNRMapPoint with the current data
BNRMapPoint *mp = [[BNRMapPoint alloc]initWithCoordinate:coord
title:[locationTitleField text]];
//Add it to the map view
[worldView addAnnotation:mp];
//Zoom the region to this location
MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance(coord, 250, 250);
[worldView setRegion:region animated:YES];
//Reset the UI
[locationTitleField setText:#""];
[activityIndicator stopAnimating];
[locationTitleField setHidden:NO];
[locationManager stopUpdatingLocation];
}
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
//Create location manager object
locationManager = [[CLLocationManager alloc] init];
[locationManager setDelegate:self];
//We want the most accuracy
[locationManager setDesiredAccuracy:kCLLocationAccuracyBest];
//Tell our manager to start looking for location immediately
[locationManager startUpdatingHeading];
[locationManager setDistanceFilter:50];
}
return self;
}
- (void)locationManager:(CLLocationManager *)manager
didUpdateToLocation:(CLLocation *)newLocation
fromLocation:(CLLocation *)oldLocation
{
NSLog(#"%#", newLocation);
//How many seconds ago was this new location created?
NSTimeInterval t = [[newLocation timestamp] timeIntervalSinceNow];
//CLLocationManagers will return the last found location of the
//device first, you don't want that data in this case.
//If this location was made > 3 minutes ago, ignore it
if (t < -180) {
//This is cached data, you don't want it. Keep looking.
return;
}
[self foundLocation:newLocation];
}
- (void)locationManager:(CLLocationManager *)manager
didFailWithError:(NSError *)error
{
NSLog(#"Could not find location: %#", error);
}
- (void)locationManager:(CLLocationManager *)manager didUpdateHeading:(CLHeading *)newHeading
{
int degrees = (int)locationManager.heading.magneticHeading;
NSLog(#"from delegate method: %i", degrees);
}
- (void)dealloc
{
//Tell loc manager to stop sending messages
[locationManager setDelegate:nil];
}
- (void)viewDidLoad
{
[worldView setShowsUserLocation:YES];
}
- (void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation
{
CLLocationCoordinate2D loc = [userLocation coordinate];
MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance(loc, 250, 250);
[worldView setRegion:region animated:YES];
}
- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
//This method isn't implemented yet - but will be soon.
[self findLocation];
[textField resignFirstResponder];
return YES;
}
#end
BNRMapPoint.h:
// BNRMapPoint.h
// Whereami
//
// Created by Meghan on 3/4/14.
// Copyright (c) 2014 Meghan. All rights reserved.
//
#import <Foundation/Foundation.h>
#import <CoreLocation/CoreLocation.h>
#import <MapKit/MapKit.h>
#interface BNRMapPoint : NSObject <MKAnnotation>
{
}
//A new designated initializer for instances of BNRMapPoint
- (id)initWithCoordinate:(CLLocationCoordinate2D)c title:(NSString *)t;
//This is a required property from MKAnnotation
#property (nonatomic, readonly) CLLocationCoordinate2D coordinate;
//This is an optional property from MKAnnotation
#property (nonatomic, copy) NSString *title;
#end
BNRMapPoint.m:
// BNRMapPoint.m
// Whereami
//
// Created by Meghan on 3/4/14.
// Copyright (c) 2014 Meghan. All rights reserved.
//
#import "BNRMapPoint.h"
#implementation BNRMapPoint
- (id)initWithCoordinate:(CLLocationCoordinate2D)c title:(NSString *)t
{
self = [super init];
if (self) {
_coordinate = c;
[self setTitle:t];
}
return self;
}
- (id)init
{
return [self initWithCoordinate:CLLocationCoordinate2DMake(43.07, -89.32)
title:#"Hometown"];
}
#end

Answer 1

In the initWithNibName method, you're not calling startUpdatingLocation on the locationManager (you're only calling startUpdatingHeading).
(You are calling startUpdatingLocation in findLocation but that's only called from textFieldShouldReturn.)
The didUpdateToLocation delegate method is only called if you do startUpdatingLocation.
Also, make sure the initWithNibName method is actually getting called.
Depending on how this view controller is being created, you may need to move that startup code to initWithCoder: or viewDidLoad.

Answer 2

Hey you can get updated location from this method in iOS
-(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
location_updated = [locations lastObject];
NSLog(#"updated coordinate are %#",location_updated);
}