Checking location service permission on iOS

Question

How can I check if location service is enabled for my app?

I have 2 storyboards and I want to check location service. If location service enabled for my app, I want to launch map storyboard with location. Otherwise, I want to launch another storyboard. How can I do programmatically?

Answer 1

This is the correct.

if ([CLLocationManager locationServicesEnabled]){      NSLog(@"Location Services Enabled");      if ([CLLocationManager authorizationStatus]==kCLAuthorizationStatusDenied){         alert = [[UIAlertView alloc] initWithTitle:@"App Permission Denied"                                                 message:@"To re-enable, please go to Settings and turn on Location Service for this app."                                            delegate:nil                                   cancelButtonTitle:@"OK"                                   otherButtonTitles:nil];         [alert show];     } } 

Answer 2

Tested on iOS 9.2

For getting location updates we should always check

• Location services enabled on user's iOS Device and
• Location services enabled for particular app

and launching user on correct settings screen to enable

Launch iOS Device Location Settings page

Step.1 Go to Project settings --> Info --> URL Types --> Add New URL Schemes

Step.2 Use below code to launch direct phone's location settings page: (Note: The URL Scheme is different in iOS 10+, we check the version as stated here)

 #define SYSTEM_VERSION_LESS_THAN(v)  ([[[UIDevice   currentDevice] systemVersion] compare:v options:NSNumericSearch] ==   NSOrderedAscending)   //Usage NSString* url = SYSTEM_VERSION_LESS_THAN(@"10.0") ? @"prefs:root=LOCATION_SERVICES" : @"App-Prefs:root=Privacy&path=LOCATION";             [[UIApplication sharedApplication] openURL:[NSURL URLWithString: url]]; 

Launch Application Location Settings page

Use below code to launch direct application's location settings page

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]]; 

Here is the full code example :

#define SYSTEM_VERSION_LESS_THAN(v)  ([[[UIDevice   currentDevice] systemVersion] compare:v options:NSNumericSearch] ==   NSOrderedAscending)   CLLocationManager *locationManager;  -(void) checkLocationServicesAndStartUpdates {     locationManager = [[CLLocationManager alloc] init];     locationManager.delegate = self;     locationManager.desiredAccuracy = kCLLocationAccuracyBest;      if ([locationManager respondsToSelector:@selector(requestWhenInUseAuthorization)])     {         [locationManager requestWhenInUseAuthorization];     }      //Checking authorization status     if (![CLLocationManager locationServicesEnabled] && [CLLocationManager authorizationStatus] == kCLAuthorizationStatusDenied)     {          UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Location Services Disabled!"                                                             message:@"Please enable Location Based Services for better results! We promise to keep your location private"                                                            delegate:self                                                   cancelButtonTitle:@"Settings"                                                   otherButtonTitles:@"Cancel", nil];          //TODO if user has not given permission to device         if (![CLLocationManager locationServicesEnabled])         {             alertView.tag = 100;         }         //TODO if user has not given permission to particular app         else         {             alertView.tag = 200;         }          [alertView show];          return;     }     else     {         //Location Services Enabled, let's start location updates         [locationManager startUpdatingLocation];     } } 

Handle the user click respone, and launch correct location settings

-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {      if(buttonIndex == 0)//Settings button pressed     {         if (alertView.tag == 100)         {             //This will open ios devices location settings             NSString* url = SYSTEM_VERSION_LESS_THAN(@"10.0") ? @"prefs:root=LOCATION_SERVICES" : @"App-Prefs:root=Privacy&path=LOCATION";             [[UIApplication sharedApplication] openURL:[NSURL URLWithString: url]];         }         else if (alertView.tag == 200)         {             //This will opne particular app location settings             [[UIApplication sharedApplication] openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]];         }     }     else if(buttonIndex == 1)//Cancel button pressed.     {         //TODO for cancel     } }