iOS中定位当前位置坐标及转换为火星坐标的方法

{

    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];