Opening Settings app from another app programmatically in iPhone

Opening settings apps programmatically is possible only from iOS 8 so, use the following code

if([CLLocationManager locationServicesEnabled] &&

       [CLLocationManager authorizationStatus] !=                kCLAuthorizationStatusDenied)

    {

      //...Location service is enabled

    }

    else

    {

        if([[[UIDevice currentDevice] systemVersion] floatValue]  < 8.0)

        {

        UIAlertView* curr1=[[UIAlertView alloc] initWithTitle:@"This app does not have access to Location service" message:@"You can enable access in Settings->Privacy->Location->Location Services" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];

        [curr1 show];

        }

        else

        {

            UIAlertView* curr2=[[UIAlertView alloc] initWithTitle:@"This app does not have access to Location service" message:@"You can enable access in Settings->Privacy->Location->Location Services" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:@"Settings", nil];

            curr2.tag=121;

            [curr2 show];

        }

    }

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex

{

    NSLog(@"buttonIndex:%d",buttonIndex);

    

     if (alertView.tag == 121 && buttonIndex == 1)

    {

   //code for opening settings app in iOS 8

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

    }

}