前言:关于这次集成高德地图,打算分几个内容定位
POI检索
导航
线路规划
,现在只是简单地实现了前两个功能,先记录一下吧。
至于集成SDK的过程很简单,需要注意的只是Info.plist中的添加两个字段
Privacy - Location When In Use Usage Description
定位权限(使用时定位)
Allow Arbitrary Loads
-
定位
(1)添加大头针
先导入头文件
#import <MAMapKit/MAMapKit.h> #import <AMapFoundationKit/AMapFoundationKit.h> #import <AMapSearchKit/AMapSearchKit.h>
懒加载创建mapView
if (_mapView == nil) {
_mapView = [[MAMapView alloc]initWithFrame:self.view.bounds];
//设置进入地图的缩放比例
[_mapView setZoomLevel:17.5 animated:YES];
//地图跟着位置移动
[_mapView setUserTrackingMode: MAUserTrackingModeFollow animated:NO];
///如果您需要进入地图就显示定位小蓝点,则需要下面两行代码
_mapView.showsUserLocation = YES;
//如果不写这句话,就不会显示蓝色圆圈,也不会自动定位,这个貌似无法更改大小
_mapView.userTrackingMode = MAUserTrackingModeFollow;
_mapView.delegate = self;
}
return _mapView;
}
创建大头针重要的一点是要实现-(MAAnnotationView *)mapView:(MAMapView *)mapView viewForAnnotation:(id<MAAnnotation>)annotation
代理方法
此时我们并没有给大头针加上经纬度和标题,看很多demo都是直接赋值,并没有根据当前用户的位置设置大头针,经过我不断地踩坑,解决了这个问题。
要获取当前用户的位置及位置的title和subTitle,要实现<AMapSearchKit/AMapSearchKit.h>
中的两个代理方法:
// 用户地址发生更新后执行- (void)mapView:(MAMapView *)mapView didUpdateUserLocation:(MAUserLocation *)userLocation updatingLocation:(BOOL)updatingLocation
(这个方法用于获取当前用户的经纬度)
// 反编码回调函数- (void)onReGeocodeSearchDone:(AMapReGeocodeSearchRequest *)request response:(AMapReGeocodeSearchResponse *)response
(这个方法用于获取当前位置的title和subTitle)
此时我们就可以使用大头针的类MAPointAnnotation
,创建一个全局对象,在代理方法中对其设置
- (void)mapView:(MAMapView *)mapView didUpdateUserLocation:(MAUserLocation *)userLocation updatingLocation:(BOOL)updatingLocation {
//将用户地址传入参数currentLocation
currentLocation = [userLocation.location copy];
//获得当前地理编码后,进行反编码,获得当前定位点的信息
[self reGeoAction];
}
//地理反编码函数
-(void)reGeoAction {
if (currentLocation) {
//生成一个地理反编码的搜索
AMapReGeocodeSearchRequest *request = [[AMapReGeocodeSearchRequest alloc] init];
request.location = [AMapGeoPoint locationWithLatitude:currentLocation.coordinate.latitude longitude:currentLocation.coordinate.longitude];
[self.searchAPI AMapReGoecodeSearch:request];
}
}
// 反编码回调函数
- (void)onReGeocodeSearchDone:(AMapReGeocodeSearchRequest *)request response:(AMapReGeocodeSearchResponse *)response {
//将搜索结果传给用户定位点,这样点击气泡就可以显示出详细信息
NSString *title = response.regeocode.addressComponent.city;
if (title.length ==0) {
title = response.regeocode.addressComponent.province;
}
self.mapView.userLocation.title = title;
self.mapView.userLocation.subtitle = response.regeocode.formattedAddress;
[self.mapView selectedAnnotations];
self.mapView.centerCoordinate = CLLocationCoordinate2DMake(currentLocation.coordinate.latitude, currentLocation.coordinate.longitude);
pointAnnotation.coordinate = CLLocationCoordinate2DMake(currentLocation.coordinate.latitude, currentLocation.coordinate.longitude);
pointAnnotation.title = title;
pointAnnotation.subtitle = response.regeocode.formattedAddress;
}
//添加大头针
-(MAAnnotationView *)mapView:(MAMapView *)mapView viewForAnnotation:(id<MAAnnotation>)annotation{
if ([annotation isKindOfClass:[MAPointAnnotation class]])
{
static NSString *pointReuseIndentifier = @"pointReuseIndentifier";
MAPinAnnotationView *annotationView = (MAPinAnnotationView*)[mapView dequeueReusableAnnotationViewWithIdentifier:pointReuseIndentifier];
if (annotationView == nil)
{
annotationView = [[MAPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:pointReuseIndentifier];
}
annotationView.canShowCallout= YES; //设置气泡可以弹出,默认为NO
annotationView.animatesDrop = YES; //设置标注动画显示,默认为NO
annotationView.draggable = YES; //设置标注可以拖动,默认为NO
annotationView.pinColor = MAPinAnnotationColorPurple;
return annotationView;
}
return nil;
}
效果图(最好用真机测试,模拟器不准确):
(2)添加覆盖圆
- (void)onReGeocodeSearchDone:(AMapReGeocodeSearchRequest *)request response:(AMapReGeocodeSearchResponse *)response {
MACircle *circle = [MACircle circleWithCenterCoordinate:currentLocation.coordinate radius:1000];
[self.mapView addOverlay:circle];
}
//添加覆盖的圆圈的代理方法
-(MAOverlayRenderer *)mapView:(MAMapView *)mapView rendererForOverlay:(id <MAOverlay>)overlay{
if ([overlay isKindOfClass:[MACircle class]])
{
MACircleRenderer *circleView = [[MACircleRenderer alloc] initWithCircle:overlay];
circleView.lineWidth = 5.f;
circleView.strokeColor = [UIColor colorWithRed:0.6 green:0.6 blue:0.6 alpha:0.8];
circleView.fillColor = [UIColor colorWithRed:1.0 green:0.8 blue:0.0 alpha:0.8];
return circleView;
}
return nil;
}
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POI周边检索
自定义一个搜索框,将搜索框中的字符串作为POI检索的关键字,然后将搜索到的信息展示出来,实现过程很简单,先上一张效果图:
)
效果图直接去github上看吧,简书不知道为什么上传不了动图了.
Demo地址