Question

我正在开发一个应用程序，我想让设备当前的经纬度和IP经理。是否可以在不使用GPS的情况下获取此信息。

谢谢

Answer 1

您可以使用CoreLocation framework

Core Location框架有一个重要的类CLLocationManager。

CLLocationManager类处理在位置发生更改时向委托发送更新。它使用委托CLLocationManagerDelegate协议。

你可以像

一样使用它

#import <CoreLocation/CoreLocation.h>

@interface ViewController : UIViewController 
  <CLLocationManagerDelegate>
{
  CLLocationManager *locationManager;

}

在viewDidLoad

中设置这样的locationManager

- (void)viewDidLoad {
  [super viewDidLoad];
  locationManager = [[CLLocationManager alloc] init];
  locationManager.delegate = self;
  locationManager.distanceFilter = kCLDistanceFilterNone; // whenever we move
  locationManager.desiredAccuracy = kCLLocationAccuracyHundredMeters; // 100 m
  [locationManager startUpdatingLocation];
}

实现以下委托方法以获取更改位置

 - (void)locationManager:(CLLocationManager *)manager
    didUpdateToLocation:(CLLocation *)newLocation
           fromLocation:(CLLocation *)oldLocation
{
  NSInteger degrees = newLocation.coordinate.latitude;
  double decimal = fabs(newLocation.coordinate.latitude - degrees);
  int minutes = decimal * 60;
  double seconds = decimal * 3600 - minutes * 60;
  NSString *lattitudeStr = [NSString stringWithFormat:@"%d° %d' %1.4f\"", 
                   degrees, minutes, seconds];
  lattitudeLabel.text = lattitudeStr;
  degrees = newLocation.coordinate.longitude;
  decimal = fabs(newLocation.coordinate.longitude - degrees);
  minutes = decimal * 60;
  seconds = decimal * 3600 - minutes * 60;
  NSString *longitudeStr = [NSString stringWithFormat:@"%d° %d' %1.4f\"", 
                     degrees, minutes, seconds];
  longitudeLabel.text = longitudeStr;
}

Answer 2

您可以使用CLLocationManager获取当前的lat和long。创建iVar CLLocationManager并使用它。

以下是代码：

- (void)viewDidLoad
{
[super viewDidLoad];
locationManager = [[CLLocationManager alloc] init];
locationManager.delegate = self;
locationManager.distanceFilter = kCLDistanceFilterNone;
locationManager.desiredAccuracy = kCLLocationAccuracyBest;
[locationManager startUpdatingLocation];
}


- (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);

currentLat = [NSString stringWithFormat:@"%f",newLocation.coordinate.latitude];
currentLong = [NSString stringWithFormat:@"%f",newLocation.coordinate.longitude];
}

Answer 3

CLLocationManager *locationManager = [[CLLocationManager alloc] init];
CLLocation* currentLocation = [locationManager location];

NSString *loc = [NSString stringWithFormat:@"%f,%f",currentLocation.coordinate.latitude, currentLocation.coordinate.longitude];
NSLog(@"location:%@", loc);

Answer 4

如果设备具有WiFi或蜂窝数据服务，您可以使用CLLocationManager获取没有GPS的当前位置。该位置不会像您从GPS获得的那样准确，但是您获得的结果比从GPS获得更快。

您可以通过将desiredAccuracy属性设置为kCLLocationAccuracyKilometer来从CLLocationManager请求非GPS位置。

Answer 5

使用Swift

import CoreLocation

获取当前位置

let locationManager = CLLocationManager()
locationManager.distanceFilter = kCLDistanceFilterNone
locationManager.desiredAccuracy = kCLLocationAccuracyBest

//get the most recently retrieved user location
if let currentLocation = locationManager.location {
    let longitude = currentLocation.coordinate.longitude
    let latitude = currentLocation.coordinate.latitude
    //work with the received data
}

请注意，locationManager.location是可选的，因此应该安全地解包。

如何为iPhone设备获取设备当前的经纬度

5 个答案: