didUpdateLocations：在运行iOS 7的设备上未调用方法

Question

I am facing a strange problem. I am using - (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations to get device location. It is working fine on simulator (iOS 6 and iOS 7) and iPhone 4S running iOS 6.1.3 . It is also working fine when I connect iPhone 4 running iOS 7 to system and install the app but as soon as I unplug the device and re-run the app, this method doesn't get called and I don't get the location. How can I overcome this issue?

Answer 1

How did you setup you location Manager?

Do you have in your interface:

@interface ViewController : UIViewController <CLLocationManagerDelegate> {
    @property (strong, nonatomic) CLLocationManager *locationManager;
}

Then in implementation in viewDidLoad:

// setup location manager
    if ([CLLocationManager locationServicesEnabled]) {
        _locationManager = [[CLLocationManager alloc] init];

        _locationManager.desiredAccuracy = kCLLocationAccuracyBest;
        _locationManager.delegate = self;

        [_locationManager startUpdatingLocation];
    }

And you need to implement the delegate:

locationManager:didUpdateLocations:

Be careful: In IOS 7

locationManager:didUpdateToLocation:fromLocation

is deprecated. Apple link to CLLocationManagerDelegate