iOS－百度地图之LBS.云检索学习

首先，要把百度地图sdk集成到项目中，集成教程可以参考百度地图api，里面有详细的说明。在集成sdk后，需要实现百度地图的基本地图。

一. 百度地图－基本地图实现：

1. 创建BMKMapView对象。

BMKMapView *_mapView;

2.对象的实现，以及设置相应的属性

    _mapView = [[BMKMapView alloc] initWithFrame:self.view.bounds];
    [self.view addSubview:_mapView];

    _mapView.userTrackingMode = BMKUserTrackingModeNone;  //定位跟随模式
    _mapView.mapType = BMKMapTypeStandard;  //标准地图
    _mapView.zoomLevel = 18;    // 设置显示级别
    _mapView.showsUserLocation = YES;   //设定是否显示定位图层

这样基本地图就实现了。

二. 百度地图－定位

1. 创建BMKLocationService对象。

BMKLocationService *_locService;

2.对象的实现，以及设置相应的属性

_locService = [[BMKLocationService alloc] init];

    _locService.delegate = self;
    // 启动locationService
    [_locService startUserLocationService];

3. 实现代理方法

#pragma mark ---

// 处理坐标更新
- (void)didUpdateBMKUserLocation:(BMKUserLocation *)userLocation
{
//    CLLocationCoordinate2D center = userLocation.location.coordinate;
//    _mapView.centerCoordinate = center;
//    [_mapView updateLocationData:userLocation];
    if (!_isSetMapSpan)
    {
        _locationPoint = userLocation.location;
        [_mapView setCenterCoordinate:userLocation.location.coordinate animated:YES];
        _isSetMapSpan = YES;
        [_mapView updateLocationData:userLocation];
    }
}

如此，定位功能就实现了。

三. 简单实现LBS.云检索功能

在这，就简单的实现下，本地云搜索，附近云搜索以及详细云搜索, 在次需要在百度地图云检索后台配置信息，如下图

百度云搜索后台

1.云搜索对象的实现

BMKCloudSearch *_search;

2.对象的实现以及相关属性的设置

    // 初始化云检索服务
    _search = [[BMKCloudSearch alloc] init];
    _search.delegate = self;
    // 设置地图级别
    [_mapView setZoomLevel:13];
    _mapView.isSelectedAnnotationViewFront = YES; //设定是否总让选中的annotaion置于最前面

3.功能的实现，选择某个搜索

a.本地云搜索：

    // 本地搜索
    
    BMKCloudLocalSearchInfo *cloudSearch = [[BMKCloudLocalSearchInfo alloc] init];
    
    cloudSearch.ak = @"IdoZaK6nNotZlVKVHB3GY4ZKLmtqHF2L";
    cloudSearch.geoTableId = 137542;
    cloudSearch.pageIndex = 0;
    cloudSearch.pageSize = 10;
    
    cloudSearch.region = @"厦门市";
    cloudSearch.keyword = @"KFC";
    
    BOOL flag = [_search localSearchWithSearchInfo:cloudSearch];

b.周边云搜索：

   // 周边搜索
    BMKCloudNearbySearchInfo *cloudLocalSearch = [[BMKCloudNearbySearchInfo alloc]init];
    cloudLocalSearch.ak = @"IdoZaK6nNotZlVKVHB3GY4ZKLmtqHF2L";
    cloudLocalSearch.geoTableId = 137542;
    cloudLocalSearch.keyword = @"KFC";
    cloudLocalSearch.radius = 10000;
    cloudLocalSearch.location = [NSString stringWithFormat:@"%f,%f",_locationPoint.coordinate.longitude, _locationPoint.coordinate.latitude];
    BOOL flag = [_search nearbySearchWithSearchInfo:cloudLocalSearch];

c.详情云搜索

    // 详情搜索
    BMKCloudDetailSearchInfo *cloudDetailearch = [[BMKCloudDetailSearchInfo alloc] init];
    cloudDetailearch.ak = @"IdoZaK6nNotZlVKVHB3GY4ZKLmtqHF2L";
    cloudDetailearch.geoTableId = 137542;
    cloudDetailearch.uid = @"1661834813";
    BOOL flag = [_search detailSearchWithSearchInfo:cloudDetailearch];

4.代理相关处理操作

// 本地、周边、区域搜索回调
- (void)onGetCloudPoiResult:(NSArray *)poiResultList searchType:(int)type errorCode:(int)error
{
    NSArray *array = [NSArray arrayWithArray:_mapView.annotations];
    [_mapView removeAnnotations:array];
    
    if (error == BMKErrorOk)
    {
        BMKCloudPOIList *result = [poiResultList objectAtIndex:0];
        for (int i = 0; i < result.POIs.count; i++)
        {
            BMKCloudPOIInfo *poi = [result.POIs objectAtIndex:i];
            BMKPointAnnotation *item = [[BMKPointAnnotation alloc] init];
            CLLocationCoordinate2D pt = (CLLocationCoordinate2D){poi.longitude, poi.latitude};
            item.coordinate = pt;
            item.title = poi.title;
            [_mapView addAnnotation:item];
        }
    }
    else
    {
        NSLog(@"error == %d", error);
    }
}

// 详情搜索回调
- (void)onGetCloudPoiDetailResult:(BMKCloudPOIInfo*)poiDetailResult searchType:(int)type errorCode:(int)error
{
    // 清楚屏幕中所有的annotation
    NSArray* array = [NSArray arrayWithArray:_mapView.annotations];
    [_mapView removeAnnotations:array];
    
    if (error == BMKErrorOk) {
        BMKCloudPOIInfo* poi = poiDetailResult;
        BMKPointAnnotation* item = [[BMKPointAnnotation alloc]init];
        CLLocationCoordinate2D pt = (CLLocationCoordinate2D){ poi.longitude,poi.latitude};
        item.coordinate = pt;
        item.title = poi.title;
        [_mapView addAnnotation:item];
        //将第一个点的坐标移到屏幕中央
        _mapView.centerCoordinate = pt;
    } else {
        NSLog(@"error ==%d",error);
    }
}