iOS 地图制作讲义

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一.系统原生地图 

1.什么是LBS

LBS:基于位置的服务   Location Based Service

实际应用:大众点评,陌陌,微信,百度地图

2.定位原理

1.GPS定位        2.基站定位    3.WIFI定位

3.定位使用框架

MapKit:显示地图

CoreLocation:定位框架,没有地图时也可以定位.

4.如何使用系统地图

1).初始化MapView

_mapView = [[MKMapViewalloc]initWithFrame:self.view.bounds];

    [self.viewaddSubview:_mapView];

2).设置地图中心坐标点

CLLocationCoordinate2D cl2d =CLLocationCoordinate2DMake(22.540396,113.951832);

    _mapView.centerCoordinate = cl2d;

3)设置地图显示区域

MKCoordinateSpan span =MKCoordinateSpanMake(0.01,0.01);

    MKCoordinateRegion region =MKCoordinateRegionMake(cl2d, span);

    _mapView.region = region;

4).设置地地图类型

_mapView.mapType =MKMapTypeStandard;

5).允许显示自己的位置

_mapView.showsUserLocation =YES;

6).初始化定位管理器

_manager = [[CLLocationManageralloc]init];

_manager.delegate =self;

7).ios8如何定位

1.在info.plist中添加  Privacy - Location Usage Description  ,  NSLocationAlwaysUsageDescription

2.在代码中  [_manager requestAlwaysAuthorization];

8).定位成功代理

- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations

9).定位失败代理

- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error

10).自定义大头针

    - (CLLocationCoordinate2D)coordinate;

- (NSString *)title;

- (NSString *)subtitle;

- (id)initWithCoordinate:(CLLocationCoordinate2D )cl2d andTitle:(NSString *)title andSubTitle:(NSString *)subTitle;

- (id)initWithCoordinate:(CLLocationCoordinate2D)cl2d andTitle:(NSString *)title andSubTitle:(NSString *)subTitle

{

    if (self = [superinit]) {

        _cl2d = cl2d;

        _title = title;

        _subTitle = subTitle;

    }

   returnself;

}

11).大头针的复用及定制

- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation

{

    staticNSString *reused = @"reused";

    MKPinAnnotationView *pin = (MKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:reused];

    if (pin ==nil) {

        pin = [[MKPinAnnotationViewalloc]initWithAnnotation:annotationreuseIdentifier:reused];

        pin.canShowCallout =YES;

        pin.pinColor =MKPinAnnotationColorGreen;

        pin.animatesDrop =YES;

        

        UIView *v = [[UIViewalloc]initWithFrame:CGRectMake(0,0, 35, 35)];

        v.backgroundColor = [UIColorredColor];

        pin.leftCalloutAccessoryView = v;

        

        UIButton *b = [UIButtonbuttonWithType:UIButtonTypeSystem];

        b.frame =CGRectMake(0,0, 35, 35);

        [b setTitle:@"按钮"forState:UIControlStateNormal];

        pin.rightCalloutAccessoryView = b;

    }

    return pin;

}

12).屏幕坐标转经纬度坐标

CLLocationCoordinate2D cl2d = [_mapViewconvertPoint:point toCoordinateFromView:_mapView];

13).反地理编码

CLLocation *location = [[CLLocationalloc]initWithLatitude:cl2d.latitudelongitude:cl2d.longitude];

        CLGeocoder *geocoder = [[CLGeocoderalloc]init];

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

            CLPlacemark *mark = [placemarks lastObject];

            myPin *pin = [[myPinalloc]initWithCoordinate:cl2dandTitle:mark.countryandSubTitle:mark.name];

            [_mapViewaddAnnotation:pin];

        }];

14).移除大头针

[_mapViewremoveAnnotations:_mapView.annotations];

二.高德地图的使用

 http://lbs.amap.com

  根据文档实现

1:地图的显示

     2:POI 搜索