最近项目刚刚忙完，有空整理一下用到的相关技术点。地图是比较常见的功能模块，现在用的比较多的是地图当前位置显示，公交、骑行、步行路线信息，附近热点位置搜索。现在国内用的比较多的是高德、百度，国外的话可以用谷歌、腾讯。路线信息的内容之前博文里面有所提及，本文以高德地图为例，主要介绍一下其他两点。
1、pod导入相应的地图库,添加引用和协议
#import <MAMapKit/MAMapKit.h>
#import <AMapFoundationKit/AMapFoundationKit.h>
#import <AMapLocationKit/AMapLocationKit.h>
#import <AMapSearchKit/AMapSearchKit.h>
<MAMapViewDelegate,AMapLocationManagerDelegate,AMapSearchDelegate>
2、定义地图、地图管理变量，热点搜索，经纬度信息变量
/**
高德地图
*/
@property (nonatomic,strong) MAMapView *mapView;
/**
定位管理
*/
@property (nonatomic,strong) AMapLocationManager *locService;
/**
用户当前位置
*/
@property (nonatomic,strong) MAPointAnnotation *curAnnotation;
/**
周边检索
*/
@property (nonatomic,strong) AMapSearchAPI *poiSearch;
/**
周边检索条件
*/
@property (nonatomic,strong) AMapPOIAroundSearchRequest *placeAround;
3、实例化相关变量，并开启定位
-(void)viewWillAppear:(BOOL)animated{
[super viewWillAppear:animated];
self.mapView.delegate = self;
self.locService.delegate = self;
self.poiSearch.delegate = self;
}
-(void)viewWillDisappear:(BOOL)animated{
[super viewWillDisappear:animated];
[self.mapView removeAnnotation:self.curAnnotation];
self.curAnnotation = nil;
self.mapView.delegate = nil;
self.locService.delegate = nil;
self.poiSearch.delegate = nil;
}
-(void)viewDidAppear:(BOOL)animated{
[super viewDidAppear:animated];
// self.locService.delegate = self;
[self.locService startUpdatingLocation];
}
#pragma mark - 懒加载
-(MAMapView *)mapView{
if (!_mapView) {
_mapView = [[MAMapView alloc]initWithFrame:self.mapBackView.bounds];
[_mapView setMapType:MAMapTypeStandard];
_mapView.showsCompass = NO;
[_mapView setZoomLevel:16];
}
return _mapView;
}
-(AMapLocationManager *)locService{
if (!_locService) {
_locService = [[AMapLocationManager alloc] init];
//设置不允许系统暂停定位
[_locService setPausesLocationUpdatesAutomatically:NO];
//设置允许在后台定位
[_locService setAllowsBackgroundLocationUpdates:YES];
//设置允许连续定位逆地理
[_locService setLocatingWithReGeocode:YES];
}
return _locService;
}
-(AMapSearchAPI *)poiSearch{
if (!_poiSearch) {
_poiSearch = [[AMapSearchAPI alloc]init];
}
return _poiSearch;
}
-(AMapPOIAroundSearchRequest *)placeAround{
if (!_placeAround) {
_placeAround = [[AMapPOIAroundSearchRequest alloc]init];
_placeAround.radius = 1500;
_placeAround.offset = 10;
_placeAround.keywords = @"";
_placeAround.sortrule = 0;
_placeAround.requireExtension = YES;
_placeAround.types = @"220000|070700|120000|110000|160000|060000|170000|130000|150900|080304|141200";
//,事物,会议,大厦,公寓,广场,银行,商场,学校,停车场,酒吧
}
return _placeAround;
}
-(void)viewDidLoad {
[super viewDidLoad];
[AMapServices sharedServices].enableHTTPS = YES;
[self createSubviews];
}
4、地图位置解析，设置地图上的当前经纬度信息，然后关闭定位，搜索周边热点位置
-(void)amapLocationManager:(AMapLocationManager *)manager didUpdateLocation:(CLLocation *)location reGeocode:(AMapLocationReGeocode *)reGeocode{
if (location) {
CLGeocoder *geocoder = [[CLGeocoder alloc] init];
WS(weakSelf)
[geocoder reverseGeocodeLocation:[[CLLocation alloc] initWithLatitude:location.coordinate.latitude longitude:location.coordinate.longitude] completionHandler:^(NSArray *placemarks, NSError *error){
if (error) {
weakSelf.errorLabel.hidden = NO;
[CCErrorView showErrorWithText:K_CC_LOCAL_STR(@"location.error")];
}else{
if (placemarks.count>0) {
if (weakSelf.curAnnotation) {
[weakSelf.mapView removeAnnotation:weakSelf.curAnnotation];
weakSelf.curAnnotation = nil;
}
weakSelf.errorLabel.hidden = YES;
weakSelf.curAnnotation = [[MAPointAnnotation alloc]init];
weakSelf.curAnnotation.coordinate = location.coordinate;
CLPlacemark *placemark = [placemarks objectAtIndex:0];
NSDictionary *addressDic = placemark.addressDictionary;
NSString *address = [[addressDic objectForKey:@"FormattedAddressLines"] firstObject];
if (K_CC_EMPTY_STR(address)) {
address = @"";
}
if (!K_CC_EMPTY_STR(addressDic[@"Country"])) {
address = [address stringByReplacingOccurrencesOfString:[addressDic objectForKey:@"Country"] withString:@""];
}
weakSelf.curAnnotation.title = address;
weakSelf.curStreet = [addressDic objectForKey:@"Name"];
weakSelf.curProvince = [addressDic objectForKey:@"State"];
weakSelf.curCity = [addressDic objectForKey:@"City"];
weakSelf.curArea = [addressDic objectForKey:@"SubLocality"];
[weakSelf.datalist removeAllObjects];
CCSignInModel *model = [[CCSignInModel alloc]init];
model.name = [addressDic objectForKey:@"Name"];
model.address = address;
model.location =location.coordinate;
model.curCity = [addressDic objectForKey:@"City"];
model.curArea = [addressDic objectForKey:@"SubLocality"];
model.curStreet = [addressDic objectForKey:@"Name"];
[weakSelf.datalist addObject:model];
weakSelf.curModel = model;
[weakSelf.listTableView reloadData];
}else{
weakSelf.errorLabel.hidden = NO;
[CCErrorView showErrorWithText:K_CC_LOCAL_STR(@"location.error")];
}
[weakSelf.mapView setCenterCoordinate:location.coordinate animated:NO];
[weakSelf.mapView addAnnotation:weakSelf.curAnnotation];
[weakSelf.mapView selectAnnotation:weakSelf.curAnnotation animated:YES];
[weakSelf.locService stopUpdatingLocation];
AMapGeoPoint *centerPoint = [AMapGeoPoint locationWithLatitude:location.coordinate.latitude longitude:location.coordinate.longitude];
[weakSelf.placeAround setLocation:centerPoint];
[weakSelf.poiSearch AMapPOIAroundSearch:weakSelf.placeAround];
}
}];
}else{
self.errorLabel.hidden = NO;
}
}
#pragma mark - AMapSearchDelegate
-(void)AMapSearchRequest:(id)request didFailWithError:(NSError *)error
{
NSLog(@"Error: %@ ", error);
if (self.datalist.count>0 && self.placeAround.page!=1) {
[self.listTableView.mj_footer endRefreshingWithNoMoreData];
}
[self.listTableView reloadData];
}
-(void)onPOISearchDone:(AMapPOISearchBaseRequest *)request response:(AMapPOISearchResponse *)response
{
[self.listTableView.mj_footer endRefreshing];
if (response.pois.count>0) {
for (AMapCloudPOI *info in response.pois) {
CCSignInModel *model = [[CCSignInModel alloc]init];
model.name = info.name;
model.address = info.address;
model.curCity = self.curCity;
model.curArea = self.curArea;
model.curStreet = self.curStreet;
model.location = CLLocationCoordinate2DMake(info.location.latitude,info.location.longitude);
[self.datalist addObject:model];
}
if (response.pois.count == 10 && self.placeAround.page == 1) {
@K_CC_WEAK(self)
self.listTableView.mj_footer = [MJRefreshAutoNormalFooter footerWithRefreshingBlock:^{
@K_CC_STRONG(self)
self.placeAround.page++;
[self.poiSearch AMapPOIAroundSearch:self.placeAround];
}];
}else if(response.pois.count < 10 && self.placeAround.page != 1){
[self.listTableView.mj_footer endRefreshingWithNoMoreData];
}
}else{
if (self.placeAround.page == 1 && self.datalist.count == 0) {
[CCNoDataView nodataViewShowWithTableView:self.listTableView isShow:YES];
}
}
[self.listTableView reloadData];
}