Display latitude and longitude in a UITextView that is a subview of the UIWindow: - objective-c

Question

I'm trying to write a program that displays count, latitude and longitude in a UITextView that is a subview of the UIWindow. I couldn't make it to display the information properly on the simulator screen. Any help is appreciated!
#import "ViewController.h"
#import <CoreLocation/CoreLocation.h>
#interface ViewController () <CLLocationManagerDelegate>
#end
#implementation ViewController
{
CLLocationManager *locationManager;
int count;
}
-(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
count++;
CLLocation *location=locations[0];
UITextView *textview = [[UITextView alloc] initWithFrame:CGRectMake(20, 10, 280, 30)];
textview.backgroundColor=[UIColor whiteColor];
NSString *coun=[NSString stringWithFormat:#"%i",count];
NSString *lat=[NSString stringWithFormat:#"%f",location.coordinate.latitude];
NSString *lon=[NSString stringWithFormat:#"%f",location.coordinate.longitude];
textview.text =(#"%# %#-%#", coun, lat, lon);
[self.view addSubview:textview];
}
- (void)viewDidLoad {
[super viewDidLoad];
locationManager=[[CLLocationManager alloc] init];
locationManager.desiredAccuracy=kCLLocationAccuracyBest;
locationManager.distanceFilter=kCLDistanceFilterNone;
locationManager.delegate=self;
[locationManager startUpdatingLocation];
[locationManager requestWhenInUseAuthorization];
}

Answer 1

I hope , Following info can help you:
#import <UIKit/UIKit.h>
#import <CoreLocation/CoreLocation.h>
#interface yourController : UIViewController <CLLocationManagerDelegate> {
CLLocationManager *locationManager;
int count;
}
#end
and add this:
locationManager = [[CLLocationManager alloc] init];
locationManager.delegate = self;
locationManager.distanceFilter = kCLDistanceFilterNone;
locationManager.desiredAccuracy = kCLLocationAccuracyBest;
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0)
[self.locationManager requestWhenInUseAuthorization];
[locationManager startUpdatingLocation];
callback function:
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation {
NSLog(#"OldLocation %f %f", oldLocation.coordinate.latitude, oldLocation.coordinate.longitude);
NSLog(#"NewLocation %f %f", newLocation.coordinate.latitude, newLocation.coordinate.longitude);
}
store the above values of latitude and longitude in string
NSString *coun=[NSString stringWithFormat:#"%i",count];
NSString *lat=[NSString stringWithFormat:#"%f",newlocation.coordinate.latitude];
NSString *lon=[NSString stringWithFormat:#"%f",newlocation.coordinate.longitude];
and then set it to textfield:
textview.text =(#"%# %#-%#", coun, lat, lon);
You also have to add a string for the (in info.plist)
[`NSLocationAlwaysUsageDescription`]