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我想从我的 iPhone 应用程序中获取用户的当前位置。我想在我的应用程序中显示用户的当前位置,例如国家名称、纬度、经度信息。而且我也想在谷歌地图上显示位置。我也尝试过谷歌搜索,但无法得到确切的答案。我已经获得了CLLocationManager在我的应用程序中用于跟踪位置的信息。我怎么用这个?我从 Apple Documents 下载了一个示例应用程序。这是链接:https ://developer.apple.com/library/ios/#samplecode/LocateMe/Introduction/Intro.html

你能帮我解决这个问题吗?提前致谢。

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4 回答 4

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1) 我已经获得了CLLocationManager在我的应用中用于跟踪位置的信息。我怎么用这个?

在 .h 文件中

#include <CoreLocation/CLLocationManagerDelegate.h>
#include <CoreLocation/CLError.h>
#include <CoreLocation/CLLocation.h>
#include <CoreLocation/CLLocationManager.h>

CLLocationManager   * myLocationManager;

CLLocation          * myLocation;

在 .m 文件中:-

    -(void)findMyCurrentLocation
    {           

    self.myLocationManager = [[[CLLocationManager alloc] init] autorelease];
    [[self myLocationManager] setDelegate:self ];
    [myLocationManager startUpdatingLocation];

    double latitude=34.052234;
    double longitude=-118.243685;

    CLLocation *defaultLocation =[[CLLocation alloc] initWithLatitude:latitude longitude:longitude];
    [self setMyLocation:defaultLocation];
    [defaultLocation release];

    if( [CLLocationManager locationServicesEnabled] )
    {   
        NSLog(@"Location Services Enabled....");
        locationServicesEnabled=TRUE;
        UIAlertView *alert = [ [UIAlertView alloc] initWithTitle:@"Information" 
                                                         message:@"Fetching your current location." 
                                                        delegate:self 
                                               cancelButtonTitle:@"OK" 
                                               otherButtonTitles:nil ];
        [alert release];
    }
    else
    {   
        NSLog( @"Location Services Are Not Enabled...." );
        locationServicesEnabled=FALSE;
        UIAlertView *alert = [ [UIAlertView alloc] initWithTitle:@"Information" 
                                                         message:@"Location service is not enable. Please enable it from settings." 
                                                        delegate:self 
                                               cancelButtonTitle:@"OK" 
                                               otherButtonTitles:nil ];
        [alert release];
     }

        }

    - (void)locationManager:(CLLocationManager *)manager didUpdateToLocation: (CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
    {
      [self setMyLocation:newLocation];

    NSString *tempLat = [ NSString stringWithFormat:@"%3.6f" , (newLocation.coordinate.latitude) ];
    NSString *tempLong= [ NSString stringWithFormat:@"%3.6f" , (newLocation.coordinate.longitude)];

    appDelegate.curlat = tempLat;
    appDelegate.curlong = tempLong;
   }

     - (void)locationManager: (CLLocationManager *)manager didFailWithError: (NSError *)error
     {
    printf("\nerror");
    UIAlertView *alert = [ [UIAlertView alloc] initWithTitle:@"Error" 
                                                     message:@"Error while getting your current location." 
                                                    delegate:self 
                                           cancelButtonTitle:@"OK" 
                                           otherButtonTitles:nil ];

    [alert release];
     }

2)。我想在我的应用程序中显示用户的当前位置,例如国家/地区名称信息。

为此,您可以使用Google 的反向地理编码MKReverseGeocoder

于 2012-02-20T07:17:57.620 回答
0

是的,您可以使用 CLGeoCoder。但是 CLGeaCoder 不会为印度等其他国家/地区提供美国以外的准确位置信息。所以最好使用谷歌的反向地理编码SVGeoCoder。SVGeoCoder 有很好的实现来使用 goolePlaceAPI 获取位置。

于 2013-10-22T09:09:57.597 回答
0

首先创建一个实例MKMapView

获取用户的纬度和经度

在你的viewDidLoad

[yourMapView setShowsUserLocation:YES];

CLLocationCoordinate2D userCoord;

userCoord.latitude=map_view.userLocation.coordinate.latitude;
userCoord.longitude=map_view.userLocation.coordinate.longitude;

//NSLogging these on simulator will give you Cupertino or whatever location you set in location simulation.

对于国家名称,您将需要反向地理编码,您可以在此处查看类参考

https://developer.apple.com/library/ios/#documentation/MapKit/Reference/MKReverseGeocoder_Class/Reference/Reference.html#//apple_ref/doc/uid/TP40008323

或者

如果 MKReverseGeoCoding 变得太复杂,你可以使用 Yahoo 的 reversegeocoder

http://where.yahooapis.com/geocode?q=%f,%f&gflags=R&appid=yourAppId,那 2 %f 将是userCoord.longitudeand userCoord.latitude

于 2012-02-20T07:19:07.087 回答