iOS如何實現百度地圖定位簽到功能

這篇文章主要為大家展示了“iOS如何實現百度地圖定位簽到功能”，內容簡而易懂，條理清晰，希望能夠幫助大家解決疑惑，下面讓小編帶領大家一起研究并學習一下“iOS如何實現百度地圖定位簽到功能”這篇文章吧。

寫在前面：

項目需求用到這個功能，主要目的是實現老師設置位置簽到范圍，學生在一定范圍內進行簽到的功能。

簡要介紹：

下面記錄一下主要的實現流程，功能的實現主要是根據百度地圖開發者官網提供的api文檔，各項功能之間組合。百度地圖的SDK現在分成了地圖功能和定位功能兩塊不同的SDK，BaiduMapAPI這個是基礎的地圖功能，BMKLocationKit這個是定位功能。項目里實現定位簽到功能用的的SDK包括上面說的這兩個模塊，所以在用cocopods引入framework的時候，需要引入： #百度地圖 pod 'BMKLocationKit' pod 'BaiduMapKit'

功能實現

一、在APPdelegate.m文件中引入：

#import <BaiduMapAPI_Base/BMKBaseComponent.h>#import <BMKLocationKit/BMKLocationComponent.h>

加入功能代碼：

#pragma mark 百度地圖設置- (void)configBaiduMap { NSString *ak = @"xxxx"; BMKMapManager *mapManager = [[BMKMapManager alloc] init]; self.mapManager = mapManager; BOOL ret = [mapManager start:ak generalDelegate:nil]; [[BMKLocationAuth sharedInstance] checkPermisionWithKey:ak authDelegate:self]; if (!ret) {  NSLog(@"manager start failed!"); }}

二、在用到地圖定位功能的viewController中

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

遵循協議<BMKMapViewDelegate,BMKLocationManagerDelegate>

聲明全局變量

@property (nonatomic, strong) BMKUserLocation *userLocation; //當前位置對象@property (nonatomic, strong) BMKLocationManager *locationManager;/** locationManager*/@property (nonatomic, strong) BMKMapView *mapView;/** 百度地圖*///@property (nonatomic, strong) BMKPointAnnotation* annotation ;/** 標記*/@property (nonatomic, strong) NSMutableArray *annotationArr;/** 標記數組*/@property (nonatomic, strong) NSMutableArray *circleArr;/** 圓形數組*/

地圖SDK文檔中建議在以下代碼中如此設置， 目的是控制內存

- (void)viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; [_mapView viewWillAppear]; _mapView.delegate = self;}- (void)viewWillDisappear:(BOOL)animated { [super viewWillDisappear:animated]; [_mapView viewWillDisappear]; _mapView.delegate = nil;}- (void)dealloc { if (_mapView) {  _mapView = nil; }}

初始化數組，這兩個數組在接下來會用到

- (NSMutableArray *)annotationArr { if (!_annotationArr) {  _annotationArr = [NSMutableArray array]; } return _annotationArr;}- (NSMutableArray *)circleArr { if (!_circleArr) {  _circleArr = [NSMutableArray array]; } return _circleArr;}

添加地圖view

#pragma mark 添加地圖- (void)addSignMapBgView { if (!self.mapBgView) {  UIView *mapBgView = [UIView new];  self.mapBgView = mapBgView;  mapBgView.backgroundColor = [CommUtls colorWithHexString:APP_BgColor];  [self addSubview:mapBgView];  [mapBgView makeConstraints:^(MASConstraintMaker *make) {   make.top.equalTo(self.tipView.bottom);   make.left.right.bottom.equalTo(0);  }];  _mapView = [[BMKMapView alloc] initWithFrame:CGRectZero];//  _mapView.delegate = self;  [_mapView setZoomLevel:21];//精確到5米  _mapView.showsUserLocation = YES;//顯示定位圖層  [mapBgView addSubview:_mapView];  [_mapView makeConstraints:^(MASConstraintMaker *make) {   make.edges.equalTo(0);  }];  _mapView.userTrackingMode = BMKUserTrackingModeNone; }}

初始化地圖定位：這里我用的是一次定位而沒有選擇持續定位。

#pragma mark 初始化locationManager- (void)initUserLocationManager { //因為mapView是在一個分離出來的view中創建的，所以在這里將signSetTypeView中的mapView賦給當前viewcontroller的mapView； self.mapView = self.mainView.signSetTypeView.mapView; self.mapView.delegate = self;// self.annotation = [[BMKPointAnnotation alloc] init]; // self.mapView是BMKMapView對象 //精度圈設置 BMKLocationViewDisplayParam *param = [[BMKLocationViewDisplayParam alloc] init]; //設置顯示精度圈，默認YES param.isAccuracyCircleShow = YES; //精度圈 邊框顏色 param.accuracyCircleStrokeColor = [UIColor colorWithRed:242/255.0 green:129/255.0 blue:126/255.0 alpha:1]; //精度圈 填充顏色 param.accuracyCircleFillColor = [UIColor colorWithRed:242/255.0 green:129/255.0 blue:126/255.0 alpha:0.3]; [self.mapView updateLocationViewWithParam:param]; self.userLocation = [[BMKUserLocation alloc] init]; //初始化實例 _locationManager = [[BMKLocationManager alloc] init]; //設置delegate _locationManager.delegate = self; //設置返回位置的坐標系類型 _locationManager.coordinateType = BMKLocationCoordinateTypeBMK09LL; //設置距離過濾參數 _locationManager.distanceFilter = kCLDistanceFilterNone; //設置預期精度參數 _locationManager.desiredAccuracy = kCLLocationAccuracyBest; //設置應用位置類型 _locationManager.activityType = CLActivityTypeAutomotiveNavigation; //設置是否自動停止位置更新 _locationManager.pausesLocationUpdatesAutomatically = NO; //設置是否允許后臺定位 //_locationManager.allowsBackgroundLocationUpdates = YES; //設置位置獲取超時時間 _locationManager.locationTimeout = 15; //設置獲取地址信息超時時間 _locationManager.reGeocodeTimeout = 15; //請求一次定位 [self requestLocation];}

請求定位，獲取經緯度

#pragma mark 請求定位- (void)requestLocation { [_locationManager requestLocationWithReGeocode:YES withNetworkState:YES completionBlock:^(BMKLocation * _Nullable location, BMKLocationNetworkState state, NSError * _Nullable error) {  if (error)  {   NSLog(@"locError:{%ld - %@};", (long)error.code, error.localizedDescription);  }  if (location) {//得到定位信息，添加annotation   if (location.location) {    NSLog(@"LOC = %@",location.location);   }   if (location.rgcData) {    NSLog(@"rgc = %@",[location.rgcData description]);   }   if (!location) {    return;   }   if (!self.userLocation) {    self.userLocation = [[BMKUserLocation alloc] init];   }   self.userLocation.location = location.location;   [self.mapView updateLocationData:self.userLocation];   CLLocationCoordinate2D mycoordinate = location.location.coordinate;   self.mapView.centerCoordinate = mycoordinate;   //賦予初始值   self.viewModel.lat = [NSString stringWithFormat:@"%f", location.location.coordinate.latitude];   self.viewModel.lng = [NSString stringWithFormat:@"%f",location.location.coordinate.longitude];   self.viewModel.radius = @"50";   //打印經緯度   NSLog(@"didUpdateUserLocation lat %f,long %f",location.location.coordinate.latitude,location.location.coordinate.longitude);  }  NSLog(@"netstate = %d",state); }];}

地圖長按選點功能實現：

//長按地圖選點- (void)mapview:(BMKMapView *)mapView onLongClick:(CLLocationCoordinate2D)coordinate { if (self.annotationArr.count > 0) {  [mapView removeAnnotations:self.annotationArr];  [self.annotationArr removeAllObjects];  BMKPointAnnotation *annotation = [[BMKPointAnnotation alloc]init];  annotation.coordinate = coordinate;  [self.annotationArr addObject:annotation];  [mapView addAnnotations:self.annotationArr]; } else {  BMKPointAnnotation *annotation = [[BMKPointAnnotation alloc]init];  annotation.coordinate = coordinate;  [self.annotationArr addObject:annotation];  [mapView addAnnotations:self.annotationArr]; } //彈出半徑選擇框 [self showLocationSelectRadiusViewWithCoordinate:coordinate];}

選點后彈出選擇定位范圍彈框

#pragma mark 彈出位置彈框- (void)showLocationSelectRadiusViewWithCoordinate:(CLLocationCoordinate2D)coordinate { ExtraActLocationSignPopView *popView = [ExtraActLocationSignPopView new]; [popView show]; @weakify(self); [popView.locatioonSureSignal subscribeNext:^(NSString *x) {  @strongify(self);  self.viewModel.radius = x;  CGFloat radius = [x floatValue];  [self circleWithCenterWithCoordinate2D:coordinate radius:radius]; }];}

設置好定位點以及半徑范圍后繪制范圍圈，開始的時候聲明的circleArr在這里用來盛放添加的區域圓形，在添加新的圓圈的時候，將之前舊的移除，保證每次繪制的范圍都是最新的，同理annotationArr也是這個功能，因為API有提供的- (void)addOverlays:(NSArray *)overlays;這個方法：/** *向地圖窗口添加一組Overlay，需要實現BMKMapViewDelegate的-mapView:viewForOverlay:函數來生成標注對應的View *@param overlays 要添加的overlay數組 */

#pragma mark 添加區域圓形覆蓋- (void)circleWithCenterWithCoordinate2D:(CLLocationCoordinate2D )coor radius:(CGFloat)radius { NSLog(@"coordinate lat %f,long %f",coor.latitude,coor.longitude); //賦予點擊選點值 self.viewModel.lat = [NSString stringWithFormat:@"%f", coor.latitude]; self.viewModel.lng = [NSString stringWithFormat:@"%f",coor.longitude]; if (self.circleArr.count > 0) {  [_mapView removeOverlays:self.circleArr];  [self.circleArr removeAllObjects];  BMKCircle *circle = [BMKCircle circleWithCenterCoordinate:coor radius:radius];  [self.circleArr addObject:circle];  [_mapView addOverlays:self.circleArr]; } else {  BMKCircle *circle = [BMKCircle circleWithCenterCoordinate:coor radius:radius];  [self.circleArr addObject:circle];  [_mapView addOverlays:self.circleArr]; }}#pragma mark 重繪overlay- (BMKOverlayView *)mapView:(BMKMapView *)mapView viewForOverlay:(id <BMKOverlay>)overlay{ if ([overlay isKindOfClass:[BMKCircle class]]){  BMKCircleView* circleView = [[BMKCircleView alloc] initWithOverlay:overlay];  circleView.fillColor = [UIColor colorWithRed:33/255.0 green:196/255.0 blue:206/255.0 alpha:0.3];  circleView.strokeColor = [UIColor colorWithRed:33/255.0 green:196/255.0 blue:206/255.0 alpha:1];  circleView.lineWidth = 1.0;  return circleView; } return nil;}

以上是“iOS如何實現百度地圖定位簽到功能”這篇文章的所有內容，感謝各位的閱讀！相信大家都有了一定的了解，希望分享的內容對大家有所幫助，如果還想學習更多知識，歡迎關注億速云行業資訊頻道！