iOS中定位当前位置坐标及转换为火星坐标的方法

定位和位置信息获取
定位和反查位置信息要加载两个动态库 corelocation.framework 和 mapkit.framework 一个获取坐标一个提供反查

// appdelgate.h
#import <uikit/uikit.h>
#import <corelocation/corelocation.h>
#import <mapkit/mapkit.h>
 
@interface appdelegate : uiresponder <uiapplicationdelegate,cllocationmanagerdelegate,mkreversegeocoderdelegate>
 
@property (strong, nonatomic) uiwindow *window;
 
@end

 

#import "appdelegate.h"
 
 
@implementation appdelegate
 
- (bool)application:(uiapplication *)application didfinishlaunchingwithoptions:(nsdictionary *)launchoptions
{
    self.window = [[uiwindow alloc] initwithframe:[[uiscreen mainscreen] bounds]];
    // override point for customization after application launch.
    self.window.backgroundcolor = [uicolor whitecolor];
    [self.window makekeyandvisible];
    uibutton *button = [uibutton buttonwithtype:uibuttontypecontactadd];
    button.frame = cgrectmake(0, 100, 100, 30);
    [button settitle:@"定位" forstate:uicontrolstatenormal];
    [button addtarget:self action:@selector(test) forcontrolevents:uicontroleventtouchupinside];
    
    uilabel *label = [[uilabel alloc] initwithframe:cgrectmake(0, 150, 320, 30)];
    label.tag = 101;
    label.text = @"等待定位中....";
    [self.window addsubview:label];
    [label release];
    [self.window addsubview:button];
    return yes;
 
}
 
-(void) test {
    
    cllocationmanager *locationmanager = [[cllocationmanager alloc] init];
    // 设置定位精度，十米，百米，最好
    [locationmanager setdesiredaccuracy:kcllocationaccuracynearesttenmeters];
    locationmanager.delegate = self;
    
    // 开始时时定位
    [locationmanager startupdatinglocation];
}
 
// 错误信息
-(void)locationmanager:(cllocationmanager *)manager didfailwitherror:(nserror *)error {
    nslog(@"error");
}
 
// 6.0 以上调用这个函数
-(void)locationmanager:(cllocationmanager *)manager didupdatelocations:(nsarray *)locations {
    
    nslog(@"%d", [locations count]);
    
    cllocation *newlocation = locations[0];
    cllocationcoordinate2d oldcoordinate = newlocation.coordinate;
    nslog(@"旧的经度：%f,旧的纬度：%f",oldcoordinate.longitude,oldcoordinate.latitude);
    
//    cllocation *newlocation = locations[1];
//    cllocationcoordinate2d newcoordinate = newlocation.coordinate;
//    nslog(@"经度：%f,纬度：%f",newcoordinate.longitude,newcoordinate.latitude);
    
    // 计算两个坐标距离
    //    float distance = [newlocation distancefromlocation:oldlocation];
    //    nslog(@"%f",distance);
    
    [manager stopupdatinglocation];
    
    //------------------位置反编码---5.0之后使用-----------------
    clgeocoder *geocoder = [[clgeocoder alloc] init];
    [geocoder reversegeocodelocation:newlocation
                   completionhandler:^(nsarray *placemarks, nserror *error){
                       
                       for (clplacemark *place in placemarks) {
                           uilabel *label = (uilabel *)[self.window viewwithtag:101];
                           label.text = place.name;
                           nslog(@"name,%@",place.name);                       // 位置名
//                           nslog(@"thoroughfare,%@",place.thoroughfare);       // 街道
//                           nslog(@"subthoroughfare,%@",place.subthoroughfare); // 子街道
//                           nslog(@"locality,%@",place.locality);               // 市
//                           nslog(@"sublocality,%@",place.sublocality);         // 区
//                           nslog(@"country,%@",place.country);                 // 国家
                       }
                       
                   }];
    
}
 
// 6.0 调用此函数
-(void)locationmanager:(cllocationmanager *)manager didupdatetolocation:(cllocation *)newlocation fromlocation:(cllocation *)oldlocation {
    nslog(@"%@", @"ok");
}
 
 
@end

转换为火星坐标
这个写的公共类叫做:gpscombineclass类主要展示gps位置的定位，gps坐标的获取，然后从手机坐标转换成火星坐标，继而在需要的情况下，由火星转百度 ，百度转火星的详细算法；

在gpscombineclass.h中

#import <foundation/foundation.h>

#import <corelocation/corelocation.h>

#import "csqlite.h"

#import <mapkit/mapkit.h>

@interface gpscombineclass : nsobject<mkmapviewdelegate>{

    cllocationmanager *locationmanager;

    csqlite *m_sqlite;

   

    uilabel *m_locationname;

    mkmapview *mainmapview;

@public cllocationcoordinate2d baidulocation;

    cllocationcoordinate2d deleeverlocation;

}

-(void)opengpsmapview;

//在地图上放上自己的位置--外接接口

-(void)setmymapponitbymkmapview:(mkmapview *)mymap;

@end

@interface poi : nsobject <mkannotation> {

   

    cllocationcoordinate2d coordinate;

    nsstring *subtitle;

    nsstring *title;

}

 

@property (nonatomic,readonly) cllocationcoordinate2d coordinate;

@property (nonatomic,retain) nsstring *subtitle;

@property (nonatomic,retain) nsstring *title;

 

-(id) initwithcoords:(cllocationcoordinate2d) coords;

 

@end

 

在gpscombineclass.m中

#import "gpscombineclass.h"

const double x_pi = 3.14159265358979324 * 3000.0 / 180.0;

@implementation gpscombineclass

-(void)opengpsmapview{

    m_sqlite = [[csqlite alloc]init];

    [m_sqlite opensqlite];

    if ([cllocationmanager locationservicesenabled]) { // 检查定位服务是否可用

        locationmanager = [[cllocationmanager alloc] init];

        locationmanager.delegate = self;

        locationmanager.distancefilter=0.5;

        locationmanager.desiredaccuracy = kcllocationaccuracybest;

        [locationmanager startupdatinglocation]; // 开始定位

    }

   

    nslog(@"gps 启动");

}

 

// 定位成功时调用

- (void)locationmanager:(cllocationmanager *)manager

    didupdatetolocation:(cllocation *)newlocation

           fromlocation:(cllocation *)oldlocation

{

    cllocationcoordinate2d mylocation = newlocation.coordinate;//手机gps

   

    mylocation = [self zztransgps:mylocation];///转换成火星gps

    deleeverlocation=mylocation;

    baidulocation=[self hhtrans_bdgps:mylocation];//转换成百度地图

     /*

    //显示火星坐标

    [self setmappoint:mylocation mkmapview:mainmapview];

  

    /////////获取位置信息

    clgeocoder *geocoder = [[clgeocoder alloc] init];

    [geocoder reversegeocodelocation:newlocation completionhandler:^(nsarray* placemarks,nserror *error)

     {

         if (placemarks.count >0   )

         {

             clplacemark * plmark = [placemarks objectatindex:0];

            

             nsstring * country = plmark.country;

             nsstring * city    = plmark.locality;

            

            

             nslog(@"%@-%@-%@",country,city,plmark.name);

             self->m_locationname.text =plmark.name;

             nslog(@"%@",self->m_locationname);

         }

        

         nslog(@"%@",placemarks);

        

     }];

   

    //[geocoder release];

    */

}

// 定位失败时调用

- (void)locationmanager:(cllocationmanager *)manager

       didfailwitherror:(nserror *)error {

    nslog(@"定位失败");

}

 

//把手机gps坐标转换成火星坐标 （google坐标）

-(cllocationcoordinate2d)zztransgps:(cllocationcoordinate2d)ygps

{

    int tenlat=0;

    int tenlog=0;

    tenlat = (int)(ygps.latitude*10);

    tenlog = (int)(ygps.longitude*10);

    nsstring *sql = [[nsstring alloc]initwithformat:@"select offlat,offlog from gpst where lat=%d and log = %d",tenlat,tenlog];

    nslog(sql);

    sqlite3_stmt* stmtl = [m_sqlite nsrunsql:sql];

    int offlat=0;

    int offlog=0;

    while (sqlite3_step(stmtl)==sqlite_row)

    {

        offlat = sqlite3_column_int(stmtl, 0);

        offlog = sqlite3_column_int(stmtl, 1);

       

    }

   

    ygps.latitude = ygps.latitude+offlat*0.0001;

    ygps.longitude = ygps.longitude + offlog*0.0001;

    return ygps;

   

   

}

//在地图上放上自己的位置--外接接口

-(void)setmymapponitbymkmapview:(mkmapview *)mymap{

 //显示火星坐标

    [self setmappoint:deleeverlocation mkmapview:mymap];

    mymap=mainmapview;

}

//在地图上放上自己的位置

-(void)setmappoint:(cllocationcoordinate2d)mylocation mkmapview:(mkmapview *)mapview

{

//    poi* m_poi = [[poi alloc]initwithcoords:mylocation];

//   

//    [mapview addannotation:m_poi];

   

    mkcoordinateregion theregion = { {0.0, 0.0 }, { 0.0, 0.0 } };

    theregion.center=mylocation;

    [mapview setzoomenabled:yes];

    [mapview setscrollenabled:yes];

    theregion.span.longitudedelta = 0.01f;

    theregion.span.latitudedelta = 0.01f;

    [mapview setregion:theregion animated:yes];

   

}

 

//把火星坐标转换成百度坐标

-(cllocationcoordinate2d)hhtrans_bdgps:(cllocationcoordinate2d)firegps

{

    cllocationcoordinate2d bdgps;

    double huo_x=firegps.longitude;

    double huo_y=firegps.latitude;

    double z = sqrt(huo_x * huo_x + huo_y * huo_y) + 0.00002 * sin(huo_y * x_pi);

    double theta = atan2(huo_y, huo_x) + 0.000003 * cos(huo_x * x_pi);

    bdgps.longitude = z * cos(theta) + 0.0065;

    bdgps.latitude = z * sin(theta) + 0.006;

    return bdgps;

}

#pragma mark 显示商品信息

#pragma mark

-(void)showpurchaseonmapbylocation:(cllocationcoordinate2d)baidugps mkmapview:(mkmapview*)mymapview{

    cllocationcoordinate2d googlegps;

    googlegps=[self hhtrans_gcgps:baidugps];//转换为百度

    [self setpurchasemappoint:googlegps mkmapview:mymapview];

}

//把百度地图转换成谷歌地图--火星坐标

-(cllocationcoordinate2d)hhtrans_gcgps:(cllocationcoordinate2d)baidugps

{

    cllocationcoordinate2d googlegps;

    double bd_x=baidugps.longitude - 0.0065;

    double bd_y=baidugps.latitude - 0.006;

    double z = sqrt(bd_x * bd_x + bd_y * bd_y) - 0.00002 * sin(bd_y * x_pi);

    double theta = atan2(bd_y, bd_x) - 0.000003 * cos(bd_x * x_pi);

    googlegps.longitude = z * cos(theta);

    googlegps.latitude = z * sin(theta);

    return googlegps;

}

 

-(void)setpurchasemappoint:(cllocationcoordinate2d)mylocation mkmapview:(mkmapview *)mapview

{

    poi* m_poi = [[poi alloc]initwithcoords:mylocation];

  
    [mapview addannotation:m_poi];
 

    mkcoordinateregion theregion = { {0.0, 0.0 }, { 0.0, 0.0 } };

    theregion.center=mylocation;

    [mapview setzoomenabled:yes];

    [mapview setscrollenabled:yes];

    theregion.span.longitudedelta = 0.01f;

    theregion.span.latitudedelta = 0.01f;

    [mapview setregion:theregion animated:yes];}

@end