一.系統原生地圖?

1.什么是LBS

LBS:基于位置的服務 ? Location Based Service

實際應用:大眾點評,陌陌,微信,百度地圖

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:顯示地圖

CoreLocation:定位框架,沒有地圖時也可以定位.

4.如何使用系統地圖

1).初始化MapView

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

? ? [self.viewaddSubview:_mapView];

2).設置地圖中心坐標點

CLLocationCoordinate2D cl2d =CLLocationCoordinate2DMake(22.540396,113.951832);

? ? _mapView.centerCoordinate = cl2d;

3)設置地圖顯示區域

MKCoordinateSpan span =MKCoordinateSpanMake(0.01,0.01);

? ? MKCoordinateRegion region =MKCoordinateRegionMake(cl2d, span);

? ? _mapView.region = region;

4).設置地地圖類型

_mapView.mapType =MKMapTypeStandard;

5).允許顯示自己的位置

_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.在代碼中? [_manager requestAlwaysAuthorization];

8).定位成功代理

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

9).定位失敗代理

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

10).自定義大頭針

? ? - (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).大頭針的復用及定制

- (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:@"按鈕"forState:UIControlStateNormal];

? ? ? ? pin.rightCalloutAccessoryView = b;

? ? }

? ? return pin;

}

12).屏幕坐標轉經緯度坐標

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

13).反地理編碼

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).移除大頭針

[_mapViewremoveAnnotations:_mapView.annotations];

二.高德地圖的使用

?http://lbs.amap.com

? 根據文檔實現

1:地圖的顯示

?? ? 2:POI 搜索

總結

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