objective C . get lat/lng information on app delegate.m - objective-c

Question

AppDelegate.h
#import <UIKit/UIKit.h>
#import <CoreLocation/CoreLocation.h>
#interface AppDelegate : UIResponder <UIApplicationDelegate,CLLocationManagerDelegate>
#property (strong, nonatomic) UIWindow *window;
#property (nonatomic, strong) CLLocationManager * locationManager;
#property (nonatomic, strong) CLLocation *currentLocation;
#end
AppDelegate.m
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.
NSLog(#"11111");
CLLocationManager *manager = [[CLLocationManager alloc] init];
manager.delegate = self;
[manager requestAlwaysAuthorization];
//Here you set the Distance Filter that you need
manager.distanceFilter = kCLDistanceFilterNone;
// Here you set the Accuracy
manager.desiredAccuracy = kCLLocationAccuracyBestForNavigation;
NSLog(#"startUpdatingLocation");
CLAuthorizationStatus status = [CLLocationManager authorizationStatus];
NSLog(#"startUpdatingLocation %#" , status);
[manager startUpdatingLocation];
NSLog(#"22222");
return YES;
}
first problem is that popup that asking permission called by
[manager requestAlwaysAuthorization]; is dismissed just after 0.5sec~3sec. I don't know why it dismiss.
and even if I pressed always approved (I don't know how English version is exactly),
CLAuthorizationStatus status = [CLLocationManager authorizationStatus];
status is alway null
-(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(CLLocation *)newLocation{
// currentLocation = newLocation;
NSLog(#"locationinfor %#! ,,, %#!!!!", newLocation.coordinate.latitude,newLocation.coordinate.longitude);
}
Secondly
for this phase, [manager startUpdatingLocation];
It should go to didUpdateLocations function and should Log
NSLog(#"locationinfor %#! ,,, %#!!!!", newLocation.coordinate.latitude,newLocation.coordinate.longitude);
but It doesn't come to didUpdateLocations.

Answer 1

The problem might be your declaration of CLLocationManager *manager. When you already have a class member CLLocationManager *locationManager defined, why not use that.
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.
NSLog(#"11111");
self.locationManager = [[CLLocationManager alloc] init];
self.locationManager.delegate = self;
[self.locationManager requestAlwaysAuthorization];
//Here you set the Distance Filter that you need
self.locationManager.distanceFilter = kCLDistanceFilterNone;
// Here you set the Accuracy
self.locationManager.desiredAccuracy = kCLLocationAccuracyBestForNavigation;
NSLog(#"startUpdatingLocation");
CLAuthorizationStatus status = [CLLocationManager authorizationStatus];
NSLog(#"startUpdatingLocation %#" , status);
[self.locationManager startUpdatingLocation];
NSLog(#"22222");
return YES;
}
Edit : Make sure your Info.plist has descriptive text for User-sensitive data. You could also check for authorization status and request again if authorization is undetermined.
- (void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status {
if (status == kCLAuthorizationStatusNotDetermined) {
[self.locationManager requestAlwaysAuthorization];
}
}