正向反向檢索：

功能描述：
（1）我們在專案中往往會需要根據經緯度在地圖中定位一個地點，在哪裡插個大頭針展示下；
（2）當經緯度沒有的時候，可以根據具體的地址資訊去獲取經緯度在地圖上插個大頭針展示下。

具體的工程：
（1）根據官方文件匯入百度地圖的FrameWork，根據官方文件先處理好所有需要的配置。
（2）我這裡給出的我的程式碼其實在百度的Demo中是可以找到的，我這裡只是總結下我的步驟；

程式碼：

（1）需要的代理：BMKLocationServiceDelegate、BMKMapViewDelegate、BMKGeoCodeSearchDelegate
（2）宣告的成本變數、屬性

BMKLocationService * _locService;
BMKGeoCodeSearch* _geocodesearch;

因為介面使用了xib所以就直接在xib上使用了MapView

@property (strong, nonatomic) IBOutlet BMKMapView *baiduMapView;

- (void)viewWillAppear:(BOOL)animated{

    [super viewWillAppear:animated];
    //注意這裡需要在這裡重新設定delegate
    self.backScrollView.delegate
 
 = self;
    //這個方法去除了導航下面的線、這個方法是一個比較好的移除導航條下面的一個線的方法
    [self.navigationController.navigationBar setShadowImage:[UIImage new]]；
    [_baiduMapView viewWillAppear];
    _baiduMapView.delegate = self;
    _locService.delegate = self;
    _geocodesearch.delegate = self;  
}
- (void)viewDidLoad {
    [super
 
 viewDidLoad]; 
}

- (void)viewWillDisappear:(BOOL)animated {

    [super viewWillDisappear:animated];
    //這裡一定要把Scrollview的代理設定為nil否則會影響到下一個介面的導航
    self.backScrollView.delegate = nil;
    [self.navigationController.navigationBar lt_reset];
    [_baiduMapView viewWillDisappear];
    // 此處記得不用的時候需要置nil，否則影響記憶體的釋放
    _baiduMapView.delegate = nil;
    _locService.delegate = nil;
    _geocodesearch.delegate = nil;

}

- (void)dealloc{
    if(_geocodesearch != nil){
        _geocodesearch = nil;
    }
    if(_baiduMapView){
        _baiduMapView = nil;
    }
}

- (void)initUI{

    _locService = [[BMKLocationService alloc]init];
    _geocodesearch = [[BMKGeoCodeSearch alloc]init];

    _locService.delegate = self;
     _baiduMapView.delegate = self;

    [_locService startUserLocationService];
     _baiduMapView.zoomLevel = 14;

    [self.navigationController.navigationBar lt_setBackgroundColor:[UIColor clearColor]];

    [self createNavButton];

    [self refreshView];

}
//重新整理介面
- (void)refreshView{

//這裡可以把這個延遲去掉不要
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{

        // 2秒後非同步執行這裡的程式碼...

        if(self.createHouseModel.latitude.integerValue == 0){

//            //如果檢索失敗就應該讓檢視周邊的按鈕不可點選，箭頭也隱藏掉

            BMKGeoCodeSearchOption *geocodeSearchOption = [[BMKGeoCodeSearchOption alloc]init];

            if([self.createHouseModel.address rangeOfString:@"市"].location != NSNotFound){
                NSArray * array = [self.createHouseModel.address componentsSeparatedByString:@"市"];

                geocodeSearchOption.city =array[0];
            }else{
               geocodeSearchOption.city= @"";
            }
            geocodeSearchOption.address = self.createHouseModel.address;
            BOOL flag = [_geocodesearch geoCode:geocodeSearchOption];
            if(flag)
            {
                NSLog(@"geo檢索傳送成功");
            }
            else
            {
                NSLog(@"geo檢索傳送失敗");
            }
        }

        else{

            CLLocationCoordinate2D pt = (CLLocationCoordinate2D){0, 0};

            pt = (CLLocationCoordinate2D){[self.createHouseModel.latitude floatValue], [self.createHouseModel.longitude floatValue]};

            BMKReverseGeoCodeOption *reverseGeocodeSearchOption = [[BMKReverseGeoCodeOption alloc]init];
            reverseGeocodeSearchOption.reverseGeoPoint = pt;
            BOOL flag = [_geocodesearch reverseGeoCode:reverseGeocodeSearchOption];
            if(flag)
            {
                NSLog(@"反geo檢索傳送成功");
            }
            else
            {
                NSLog(@"反geo檢索傳送失敗");
            }

        }

    });
 }
//根據anntation生成對應的View

- (BMKAnnotationView *)mapView:(BMKMapView *)mapView viewForAnnotation:(id<BMKAnnotation>)annotation{

    NSString *AnnotationViewID = @"annotationViewID";
    //根據指定標識查詢一個可被複用的標註View，一般在delegate中使用，用此函式來代替新申請一個View
    BMKAnnotationView *annotationView = [mapView dequeueReusableAnnotationViewWithIdentifier:AnnotationViewID];
    if (annotationView == nil) {
        annotationView = [[BMKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:AnnotationViewID];
        ((BMKPinAnnotationView*)annotationView).pinColor = BMKPinAnnotationColorRed;
        ((BMKPinAnnotationView*)annotationView).animatesDrop = YES;
    }

    annotationView.centerOffset = CGPointMake(0, -(annotationView.frame.size.height * 0.5));
    annotationView.annotation = annotation;
    annotationView.canShowCallout = YES;
    return annotationView;
}


- (void)onGetGeoCodeResult:(BMKGeoCodeSearch *)searcher result:(BMKGeoCodeResult *)result errorCode:(BMKSearchErrorCode)error
{
    NSArray* array = [NSArray arrayWithArray:_baiduMapView.annotations];
    [_baiduMapView removeAnnotations:array];
    array = [NSArray arrayWithArray:_baiduMapView.overlays];
    [_baiduMapView removeOverlays:array];
    if (error == 0) {
        self.locationFailRemarkView.hidden = YES;
        BMKPointAnnotation* item = [[BMKPointAnnotation alloc]init];
        item.coordinate = result.location;
        item.title = self.createHouseModel.esidentialquarters;//標題是小區的名稱；

        [_baiduMapView addAnnotation:item];
        _baiduMapView.centerCoordinate = result.location;

        self.createHouseModel.latitude = [NSString stringWithFormat:@"%f",item.coordinate.latitude];
        self.createHouseModel.longitude = [NSString stringWithFormat:@"%f",item.coordinate.longitude];

    }else{
        self.locationFailRemarkView.hidden = NO;
    }
}

-(void) onGetReverseGeoCodeResult:(BMKGeoCodeSearch *)searcher result:(BMKReverseGeoCodeResult *)result errorCode:(BMKSearchErrorCode)error
{
    NSArray* array = [NSArray arrayWithArray:_baiduMapView.annotations];
    [_baiduMapView removeAnnotations:array];
    array = [NSArray arrayWithArray:_baiduMapView.overlays];
    [_baiduMapView removeOverlays:array];
    if (error == 0) {
         self.locationFailRemarkView.hidden = YES;
        BMKPointAnnotation* item = [[BMKPointAnnotation alloc]init];
        item.coordinate = result.location;
        item.title = self.createHouseModel.esidentialquarters;//標題是小區的名稱；
        [_baiduMapView addAnnotation:item];
        _baiduMapView.centerCoordinate = result.location;

    }else{
       self.locationFailRemarkView.hidden = NO;
    }
}

//代理方法
- (void)didUpdateUserHeading:(BMKUserLocation *)userLocation{

    [_baiduMapView updateLocationData:userLocation];
}

- (void)didUpdateBMKUserLocation:(BMKUserLocation *)userLocation{

    [_baiduMapView updateLocationData:userLocation];

}

周邊檢索

這裡的檢索程式碼在百度的Demo中也是可以找到的。這裡我做了一點點的修改。不過還存在一個問題，當點選搜尋“地鐵”的時候無法出現

#import "NeighbourViewController.h"
#import "SliderView.h"

@interface NeighbourViewController ()<BMKMapViewDelegate,BMKLocationServiceDelegate,SliderViewDelegate,BMKPoiSearchDelegate>{

    NSString * searchSign;

     BMKLocationService * _locService;
     BMKPoiSearch* _poisearch;
}

@property (nonatomic,strong) BMKMapView * baiduMapView;
@property (nonatomic,strong) SliderView * sliderView;
@property (nonatomic,strong) UIButton * rightButton;

@end

@implementation NeighbourViewController


- (void)viewWillAppear:(BOOL)animated{

    [super viewWillAppear:animated];
    [self.baiduMapView viewWillAppear];
    self.baiduMapView.delegate = self; // 此處記得不用的時候需要置nil，否則影響記憶體的釋放
    _locService.delegate = self;
    _poisearch.delegate = self;


}

- (void)viewDidLoad {
    [super viewDidLoad];
    _poisearch = [[BMKPoiSearch alloc]init];
    _locService = [[BMKLocationService alloc]init];
    [_locService startUserLocationService];

    self.view.backgroundColor = [UIColor whiteColor];

}

- (void)viewWillDisappear:(BOOL)animated {

    [super viewWillDisappear:animated];

    [self.baiduMapView viewWillDisappear];
    _poisearch.delegate = nil; // 不用時，置nil
    self.baiduMapView.delegate = nil; // 不用時，置nil
    _locService.delegate = nil;
}

- (void)initData{

}

- (void)initUI{

    [self createRightButton];


    [self goBackBtn];
    [self createBaiduMapView];
    [self createBottomView];

    [self startLocation];//開始定位

}

- (void)createRightButton{

    self.rightButton = [self createRightItemAction:@selector(rightButtonClick:)];
    [self.rightButton setTitle:@"導航" forState:UIControlStateNormal];

    self.rightButton.titleLabel.font = [UIFont systemFontOfSize:15.0f];

    self.rightButton.contentHorizontalAlignment = UIControlContentHorizontalAlignmentRight;
    self.rightButton.titleEdgeInsets = UIEdgeInsetsMake(0, 0, 0, -10);


}

//導航按鈕的點選
- (void)rightButtonClick:(UIButton *)button{

    if ([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:@"baidumap://map/"]])
    {

        double m_wd = _locService.userLocation.location.coordinate.latitude;
        double m_jd = _locService.userLocation.location.coordinate.longitude;

        NSString *urlString = [NSString stringWithFormat:@"baidumap://map/direction?origin=%f,%f&destination=%f,%f&mode=driving&src=webapp.navi.yourCompanyName.yourAppName",m_wd,m_jd,self.latFloat,self.logFloat];

        [[UIApplication sharedApplication]openURL:[NSURL URLWithString:urlString]];
    }else{
        [SVProgressHUD showErrorWithStatus:@"您沒有安裝百度地圖，無法為你導航"];
    }
}


- (void)createBaiduMapView{

    self.baiduMapView = [[BMKMapView alloc]initWithFrame:CGRectMake(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT - 50)];

    // 設定地圖級別
    [self.baiduMapView setZoomLevel:13];

    [self.view addSubview:self.baiduMapView];
}

- (void)didUpdateUserHeading:(BMKUserLocation *)userLocation{
    [self.baiduMapView updateLocationData:userLocation];
}

- (void)didUpdateBMKUserLocation:(BMKUserLocation *)userLocation{
    [self.baiduMapView updateLocationData:userLocation];

}

#pragma mark 開始定位

- (void)startLocation{

    CLLocationCoordinate2D coordinate;
    coordinate.latitude = self.latFloat;
    coordinate.longitude = self.logFloat;
    [_locService startUserLocationService];
    self.baiduMapView.userTrackingMode = BMKUserTrackingModeNone;//設定定位的狀態
    [self.baiduMapView setShowsUserLocation:YES];

    BMKPointAnnotation* annotation = [[BMKPointAnnotation alloc]init];
    annotation.coordinate = coordinate;
    annotation.title = self.titleStr;
    [self.baiduMapView addAnnotation:annotation];


    self.baiduMapView.centerCoordinate = coordinate;
}

- (void)createBottomView{

    NSMutableArray * titleArray = [[NSMutableArray alloc]initWithObjects:@"銀行",@"公交",@"地鐵",@"教育",@"醫院",@"休閒",@"購物",@"健身",@"美食",nil];

    self.sliderView = [[SliderView alloc]initWithFrame:CGRectMake(0, SCREEN_HEIGHT - 50, SCREEN_WIDTH, 50) titleArray:titleArray];

    self.sliderView.sliderDelegate = self;
    [self.view addSubview:self.sliderView];


}

- (void)itemButtonClick:(UIButton *)button{


    NSString * searchTitle = button.titleLabel.text;
    searchSign = searchTitle;

    BMKNearbySearchOption * nearSearch = [[BMKNearbySearchOption alloc]init];
    CLLocationCoordinate2D coordinate;
    coordinate.latitude = self.latFloat;
    coordinate.longitude = self.logFloat;
    nearSearch.pageIndex = 1;
    nearSearch.pageCapacity = 20;
    nearSearch.location = coordinate;
    nearSearch.radius = 3000;
    nearSearch.keyword = searchTitle;
    BOOL flag = [_poisearch poiSearchNearBy:nearSearch];
    if(flag)
    {

        NSLog(@"城市內檢索傳送成功");
    }
    else
    {

        NSLog(@"城市內檢索傳送失敗");
    }

}

- (void)dealloc {
    if (_poisearch != nil) {
        _poisearch = nil;
    }
    if (_baiduMapView) {
        _baiduMapView = nil;
    }
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}


/**
 *根據anntation生成對應的View
 *@param mapView 地圖View
 *@param annotation 指定的標註
 *@return 生成的標註View
 */
- (BMKAnnotationView *)mapView:(BMKMapView *)view viewForAnnotation:(id <BMKAnnotation>)annotation
{  
    NSString *AnnotationViewID = @"xidanMark";

    BMKPinAnnotationView *newAnnotationView = [[BMKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:AnnotationViewID];

    // 快取沒有命中，自己構造一個，一般首次新增annotation程式碼會執行到此處
    if (newAnnotationView == nil) {

        newAnnotationView = [[BMKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:AnnotationViewID];
        ((BMKPinAnnotationView*)newAnnotationView).pinColor = BMKPinAnnotationColorRed;
        // 設定重天上掉下的效果(annotation)
        ((BMKPinAnnotationView*)newAnnotationView).animatesDrop = YES;
    }


    newAnnotationView.pinColor = BMKPinAnnotationColorPurple;
    newAnnotationView.animatesDrop = YES;// 設定該標註點動畫顯示
    newAnnotationView.annotation=annotation;


    if([searchSign isEqualToString:@"銀行"]){
       newAnnotationView.image = [UIImage imageNamed:@"location_bank"];

    }else if([searchSign isEqualToString:@"公交"]){

       newAnnotationView.image = [UIImage imageNamed:@"location_transit"];

    }else if([searchSign isEqualToString:@"銀行"]){
        newAnnotationView.image = [UIImage imageNamed:@"location_bank"];
    }else if([searchSign isEqualToString:@"地鐵"]){
        newAnnotationView.image = [UIImage imageNamed:@"location_subWay"];
    }else if([searchSign isEqualToString:@"教育"]){
        newAnnotationView.image = [UIImage imageNamed:@"location_eductation"];
    }else if([searchSign isEqualToString:@"醫院"]){
        newAnnotationView.image = [UIImage imageNamed:@"location_hospital"];
    }else if([searchSign isEqualToString:@"休閒"]){
        newAnnotationView.image = [UIImage imageNamed:@"location_casual"];
    }else if([searchSign isEqualToString:@"購物"]){
        newAnnotationView.image = [UIImage imageNamed:@"location_shopping"];
    }else if([searchSign isEqualToString:@"健身"]){
        newAnnotationView.image = [UIImage imageNamed:@"location_physical"];
    }else if([searchSign isEqualToString:@"美食"]){
        newAnnotationView.image = [UIImage imageNamed:@"location_food"];
    }

//    newAnnotationView.image = [UIImage imageNamed:@"home_push.jpg"];   //把大頭針換成別的圖片
    newAnnotationView.size = CGSizeMake(28, 35);
    return newAnnotationView;

}
- (void)mapView:(BMKMapView *)mapView didSelectAnnotationView:(BMKAnnotationView *)view
{
    [mapView bringSubviewToFront:view];
    [mapView setNeedsDisplay];
}
- (void)mapView:(BMKMapView *)mapView didAddAnnotationViews:(NSArray *)views
{
    NSLog(@"didAddAnnotationViews");
}

#pragma mark -
#pragma mark implement BMKSearchDelegate
- (void)onGetPoiResult:(BMKPoiSearch *)searcher result:(BMKPoiResult*)result errorCode:(BMKSearchErrorCode)error
{
    [SVProgressHUD show];
    // 清楚螢幕中所有的annotation
    NSMutableArray* array = [NSMutableArray arrayWithArray:_baiduMapView.annotations];
    for(int i = 0; i < array.count; i++){

        BMKPointAnnotation * annotation = array[i];
        if([annotation.title isEqualToString:self.titleStr]){
            [array removeObject:annotation];
        }
    }
    [_baiduMapView removeAnnotations:array];

    if (error == BMK_SEARCH_NO_ERROR) {

        NSMutableArray *annotations = [NSMutableArray array];
        for (int i = 0; i < result.poiInfoList.count; i++) {

            BMKPoiInfo* poi = [result.poiInfoList objectAtIndex:i];
            BMKPointAnnotation* item = [[BMKPointAnnotation alloc]init];
            item.coordinate = poi.pt;
            item.title = poi.name;
            [annotations addObject:item];
        }
        [_baiduMapView addAnnotations:annotations];
        [_baiduMapView showAnnotations:annotations animated:YES];


    } else if (error == BMK_SEARCH_AMBIGUOUS_ROURE_ADDR){
        NSLog(@"起始點有歧義");
    } else {
        // 各種情況的判斷。。。
    }

    [SVProgressHUD dismiss];
}

@end