前言

需要實(shí)現(xiàn)員工巡查功能硫狞，展示地圖，并顯示員工當(dāng)前所在位置晃痴。當(dāng)該員工點(diǎn)擊“開(kāi)始巡查”按鈕残吩，則追隨其腳步，進(jìn)行軌跡繪制倘核，直到員工點(diǎn)擊“結(jié)束巡查”按鈕泣侮，完成軌跡的繪制，并截圖上傳至后臺(tái)紧唱。

注冊(cè)和獲取百度地圖的秘鑰

官方文檔

引入第三方庫(kù)

    pod 'BMKLocationKit'
    pod 'BaiduMapKit'

//引入base相關(guān)所有的頭文件
#import <BaiduMapAPI_Base/BMKBaseComponent.h>
//引入地圖功能所有的頭文件
#import <BaiduMapAPI_Map/BMKMapComponent.h>

@interface RouteViewController ()<BMKMapViewDelegate, BMKLocationManagerDelegate>
@end

地圖設(shè)置

#pragma mark - 地圖懶加載
-(BMKMapView *)mapView
{
    if (!_mapView) {
        _mapView = [[BMKMapView alloc] initWithFrame:CGRectMake(0, kTopHeight, KScreenWidth, KScreenHeight-kTopHeight-100)];
        //地圖放縮大小活尊，4-21
        _mapView.zoomLevel = 17;
        //定位模式，定位跟隨模式才會(huì)有個(gè)箭頭跟著人走漏益，羅盤(pán)的話會(huì)有一個(gè)圈圈
        _mapView.userTrackingMode = BMKUserTrackingModeFollow;
        //設(shè)定地圖View能否支持所有手勢(shì)操作
        _mapView.gesturesEnabled= YES;
        _mapView.delegate= self;
        //是否顯示定位圖層蛹锰，默認(rèn)為NO，則不顯示跟著人走的箭頭绰疤。
        _mapView.showsUserLocation = YES;
        //此類(lèi)表示定位圖層自定義樣式參數(shù)
        BMKLocationViewDisplayParam *param = [[BMKLocationViewDisplayParam alloc] init];
        //不顯示定位圖層的圈圈
        param.isAccuracyCircleShow = NO;
        [_mapView updateLocationViewWithParam:param];
        //設(shè)置地圖模式為標(biāo)準(zhǔn)地圖
        [_mapView setMapType:BMKMapTypeStandard];
    }
    return _mapView;
}

定位設(shè)置

#pragma mark - 設(shè)置locationManager宁仔，定位到當(dāng)前位置
-(void)setupLocationManager
{
    //初始化實(shí)例
    self.locationManager = [[BMKLocationManager alloc] init];
    self.locationManager.delegate = self;
    //設(shè)置返回位置的坐標(biāo)系類(lèi)型
    self.locationManager.coordinateType = BMKLocationCoordinateTypeBMK09LL;
    //設(shè)置距離過(guò)濾參數(shù)，超過(guò)10米才更新位置參數(shù)
    self.locationManager.distanceFilter = 10;
    //設(shè)置預(yù)期精度參數(shù)
    self.locationManager.desiredAccuracy = kCLLocationAccuracyNearestTenMeters;
    //設(shè)置應(yīng)用位置類(lèi)型
    self.locationManager.activityType = CLActivityTypeAutomotiveNavigation;
    //設(shè)置是否自動(dòng)停止位置更新
    self.locationManager.pausesLocationUpdatesAutomatically = NO;
    //設(shè)置是否允許后臺(tái)定位
    self.locationManager.allowsBackgroundLocationUpdates = YES;
    //設(shè)置位置獲取超時(shí)時(shí)間
    self.locationManager.locationTimeout = 10;
    //設(shè)置獲取地址信息超時(shí)時(shí)間
    self.locationManager.reGeocodeTimeout = 10;
    [self.locationManager startUpdatingHeading];
    //打開(kāi)這個(gè)才能在地圖加載后定位到當(dāng)前位置峦睡，不然坐標(biāo)點(diǎn)箭頭會(huì)跑到幾內(nèi)亞灣去
    [self.locationManager startUpdatingLocation];
}

定位代理

-(void)BMKLocationManager:(BMKLocationManager *)manager didUpdateHeading:(CLHeading *)heading
{
    if (!heading) {
        return;
    }
    if (!self.userLocation) {
        self.userLocation = [[BMKUserLocation alloc] init];
    }
    self.userLocation.heading = heading;
    [self.mapView updateLocationData:self.userLocation];
}

-(void)BMKLocationManager:(BMKLocationManager *)manager didUpdateLocation:(BMKLocation *)location orError:(NSError *)error
{
    if (error) {
        NSLog(@"locError:{%ld - %@};", (long)error.code, error.localizedDescription);
    }
    if (!location) {
        return ;
    }
    if (!self.userLocation) {
        self.userLocation = [[BMKUserLocation alloc] init];
    }
    
    self.userLocation.location = location.location;
    [self.mapView updateLocationData:self.userLocation];

    //設(shè)置一個(gè)開(kāi)始繪制軌跡的flag翎苫，當(dāng)flag為真的時(shí)候，開(kāi)始繪制軌跡榨了，在此處寫(xiě)代碼來(lái)繪制
}

地圖代理

#pragma mark - 添加線圖
-(BMKOverlayView *)mapView:(BMKMapView *)mapView viewForOverlay:(id<BMKOverlay>)overlay
{
    if ([overlay isKindOfClass:[BMKPolyline class]]) {
        BMKPolylineView *polylineView = [[BMKPolylineView alloc] initWithOverlay:overlay];
        polylineView.strokeColor = CSecondaryColor;
        polylineView.lineWidth = 2.0;
        
        return polylineView;
    }
    return nil;
}

#pragma mark - 添加完線圖
-(void)mapView:(BMKMapView *)mapView didAddOverlayViews:(NSArray *)overlayViews
{
    //每次添加完線圖煎谍，把地圖的中心設(shè)置成起始點(diǎn)和當(dāng)前位置點(diǎn)的中點(diǎn)
    CLLocationDegrees longitude = (self.startLocation.location.coordinate.longitude + self.userLocation.location.coordinate.longitude)/2;
    CLLocationDegrees latitude = (self.startLocation.location.coordinate.latitude + self.userLocation.location.coordinate.latitude)/2;
    _mapView.centerCoordinate = CLLocationCoordinate2DMake(latitude, longitude);
}

自定義Annotation

-(BMKAnnotationView *)mapView:(BMKMapView *)mapView viewForAnnotation:(id<BMKAnnotation>)annotation
{
    if ([annotation isKindOfClass:[BMKPointAnnotation class]]) {
        static NSString *reuseID = @"anotationReuseIndetifier";
        BMKAnnotationView *annotationView = [mapView dequeueReusableAnnotationViewWithIdentifier:reuseID];
        if (annotationView == nil) {
            annotationView = [[BMKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:reuseID];
        }
        
        UILabel *lblStart = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 30, 30)];
        if (!self.isStartTrace) {
            lblStart.text = @"始";
        }
        else{
            lblStart.text = @"終";
        }
        lblStart.backgroundColor = CSecondaryColor;
        lblStart.font = [UIFont systemFontOfSize:14.0];
        lblStart.textAlignment = NSTextAlignmentCenter;
        lblStart.textColor = [UIColor whiteColor];
        lblStart.layer.cornerRadius = 15;
        lblStart.layer.borderWidth = 1;
        lblStart.layer.masksToBounds = YES;
        lblStart.layer.borderColor = [UIColor darkGrayColor].CGColor;
        [annotationView addSubview:lblStart];
        
        return annotationView;
    }
    return nil;
}