如何获取IPhone设备的当前纬度和经度

我正在开发一个应用程序，我想为IPhone获取设备当前的纬度和经度。是否可以在不使用GPS的情况下获取此信息

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谢谢

您可以使用

CLLocationManager

获取当前的lat和long。 创建

CLLocationManager

的

iVar

，并使用它

代码如下：

- (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];
}

---

您可以使用

CLLocationManager

获取当前lat和long。 创建

CLLocationManager

的

iVar

，并使用它

代码如下：

- (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];
}

---

如果设备具有WiFi或蜂窝数据服务，则可以使用CLLocationManager获取当前位置，而无需GPS。位置将不会像你从GPS获得的那样精确，但你得到的结果比从GPS获得的结果要快

---

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

如果设备具有WiFi或蜂窝数据服务，则可以使用CLLocationManager获取不带GPS的当前位置。位置将不会像你从GPS获得的那样精确，但你得到的结果比从GPS获得的结果要快

---

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

您可以使用

CoreLocation framework

核心位置框架有一个重要的类

CLLocationManager

CLLocationManager

类处理在位置更改时向代理发送更新。它使用委托

CLLocationManagerDelegate

协议

你可以像这样使用它

#import <CoreLocation/CoreLocation.h>

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

}

执行以下代理方法以更改位置

 - (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;
}

---

您可以使用

CoreLocation框架

核心位置框架有一个重要的类

CLLocationManager

CLLocationManager

类处理在位置更改时向代理发送更新。它使用委托

CLLocationManagerDelegate

协议

你可以像这样使用它

#import <CoreLocation/CoreLocation.h>

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

}

执行以下代理方法以更改位置

 - (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;
}

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，因此应使用Swift安全地展开。

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，因此应该安全地展开