ISOGPS定位，坐标转换以及如何显示

这个写的公共类叫做:GPScombineClass类主要展示GPS位置的定位&＃xff0c;GPS坐标的获取&＃xff0c;然后从手机坐标转换成火星坐标&＃xff0c;继而在需要的情况下&＃xff0c;由火星转百度 &＃xff0c;百度转火星的详细算法&＃xff1b;

在GPScombineClass.h中

#import 

#import 

#import "CSqlite.h"

#import 

&＃64;interface GPScombineClass : NSObject{

    CLLocationManager *locationManager;

    CSqlite *m_sqlite;

    UILabel *m_locationName;

    MKMapView *mainMapView;

&＃64;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;

&＃64;end

&＃64;interface POI : NSObject  {

    CLLocationCoordinate2D coordinate;

    NSString *subtitle;

    NSString *title;

}

&＃64;property (nonatomic,readonly) CLLocationCoordinate2D coordinate;

&＃64;property (nonatomic,retain) NSString *subtitle;

&＃64;property (nonatomic,retain) NSString *title;

-(id) initWithCoords:(CLLocationCoordinate2D) coords;

&＃64;end

在GPScombineClass.m中

#import "GPScombineClass.h"

const double x_pi &＃61; 3.14159265358979324 * 3000.0 / 180.0;

&＃64;implementation GPScombineClass

-(void)OpenGPSmapView{

    m_sqlite &＃61; [[CSqlite alloc]init];

    [m_sqlite openSqlite];

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

        locationManager &＃61; [[CLLocationManager alloc] init];

        locationManager.delegate &＃61; self;

        locationManager.distanceFilter&＃61;0.5;

        locationManager.desiredAccuracy &＃61; kCLLocationAccuracyBest;

        [locationManager startUpdatingLocation]; // 开始定位

    }

    NSLog(&＃64;"GPS 启动");

}

// 定位成功时调用

- (void)locationManager:(CLLocationManager *)manager

    didUpdateToLocation:(CLLocation *)newLocation

           fromLocation:(CLLocation *)oldLocation

{

    CLLocationCoordinate2D mylocation &＃61; newLocation.coordinate;//手机GPS

    mylocation &＃61; [self zzTransGPS:mylocation];///转换成火星GPS

    deleeverLocation&＃61;mylocation;

    baidulocation&＃61;[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 &＃61; [[CLGeocoder alloc] init];

    [geocoder reverseGeocodeLocation:newLocation completionHandler:^(NSArray* placemarks,NSError *error)

     {

         if (placemarks.count >0   )

         {

             CLPlacemark * plmark &＃61; [placemarks objectAtIndex:0];

             NSString * country &＃61; plmark.country;

             NSString * city    &＃61; plmark.locality;

             NSLog(&＃64;"%&＃64;-%&＃64;-%&＃64;",country,city,plmark.name);

             self->m_locationName.text &＃61;plmark.name;

             NSLog(&＃64;"%&＃64;",self->m_locationName);

         }

         NSLog(&＃64;"%&＃64;",placemarks);

     }];

    //[geocoder release];

    */

}

// 定位失败时调用

- (void)locationManager:(CLLocationManager *)manager

       didFailWithError:(NSError *)error {

    NSLog(&＃64;"定位失败");

}

//把手机GPS坐标转换成火星坐标 &＃xff08;google坐标&＃xff09;

-(CLLocationCoordinate2D)zzTransGPS:(CLLocationCoordinate2D)yGps

{

    int TenLat&＃61;0;

    int TenLog&＃61;0;

    TenLat &＃61; (int)(yGps.latitude*10);

    TenLog &＃61; (int)(yGps.longitude*10);

    NSString *sql &＃61; [[NSString alloc]initWithFormat:&＃64;"select offLat,offLog from gpsT where lat&＃61;%d and log &＃61; %d",TenLat,TenLog];

    NSLog(sql);

    sqlite3_stmt* stmtL &＃61; [m_sqlite NSRunSql:sql];

    int offLat&＃61;0;

    int offLog&＃61;0;

    while (sqlite3_step(stmtL)&＃61;&＃61;SQLITE_ROW)

    {

        offLat &＃61; sqlite3_column_int(stmtL, 0);

        offLog &＃61; sqlite3_column_int(stmtL, 1);

    }

    yGps.latitude &＃61; yGps.latitude&＃43;offLat*0.0001;

    yGps.longitude &＃61; yGps.longitude &＃43; 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&＃61;mainMapView;

}

//在地图上放上自己的位置

-(void)SetMapPoint:(CLLocationCoordinate2D)myLocation MKMapView:(MKMapView *)mapView

{

//    POI* m_poi &＃61; [[POI alloc]initWithCoords:myLocation];

//    

//    [mapView addAnnotation:m_poi];

    MKCoordinateRegion theRegion &＃61; { {0.0, 0.0 }, { 0.0, 0.0 } };

    theRegion.center&＃61;myLocation;

    [mapView setZoomEnabled:YES];

    [mapView setScrollEnabled:YES];

    theRegion.span.longitudeDelta &＃61; 0.01f;

    theRegion.span.latitudeDelta &＃61; 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&＃61;fireGps.longitude;

    double huo_y&＃61;fireGps.latitude;

    double z &＃61; sqrt(huo_x * huo_x &＃43; huo_y * huo_y) &＃43; 0.00002 * sin(huo_y * x_pi);

    double theta &＃61; atan2(huo_y, huo_x) &＃43; 0.000003 * cos(huo_x * x_pi);

    bdGps.longitude &＃61; z * cos(theta) &＃43; 0.0065;

    bdGps.latitude &＃61; z * sin(theta) &＃43; 0.006;

    return bdGps;

}

#pragma mark 显示商品信息

#pragma mark

-(void)showPurchaseOnMapByLocation:(CLLocationCoordinate2D)baiduGPS MKMapView:(MKMapView*)myMapView{

    CLLocationCoordinate2D googleGPS;

    googleGPS&＃61;[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&＃61;baiduGps.longitude - 0.0065;

    double bd_y&＃61;baiduGps.latitude - 0.006;

    double z &＃61; sqrt(bd_x * bd_x &＃43; bd_y * bd_y) - 0.00002 * sin(bd_y * x_pi);

    double theta &＃61; atan2(bd_y, bd_x) - 0.000003 * cos(bd_x * x_pi);

    googleGps.longitude &＃61; z * cos(theta);

    googleGps.latitude &＃61; z * sin(theta);

    return googleGps;

}

-(void)SetPurchaseMapPoint:(CLLocationCoordinate2D)myLocation MKMapView:(MKMapView *)mapView

{

    POI* m_poi &＃61; [[POI alloc]initWithCoords:myLocation];

    [mapView addAnnotation:m_poi];

    MKCoordinateRegion theRegion &＃61; { {0.0, 0.0 }, { 0.0, 0.0 } };

    theRegion.center&＃61;myLocation;

    [mapView setZoomEnabled:YES];

    [mapView setScrollEnabled:YES];

    theRegion.span.longitudeDelta &＃61; 0.01f;

    theRegion.span.latitudeDelta &＃61; 0.01f;

    [mapView setRegion:theRegion animated:YES];}

&＃64;end