iOS實現百度地圖定位簽到功能

這篇文章主要給大家介紹了iOS實現百度地圖定位簽到功能的相關資料，文中通過示例代碼介紹的非常詳細，對大家的學習或者工作具有一定的參考學習價值，需要的朋友們下面隨着小編來一起學習學習吧

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範圍，學生在一定範圍內進行簽到的功能。

功能如下方截圖：

屏幕快照 2019-01-28 上午10.29.26.png

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。項目裏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：這裏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 {
 //因爲mapView是在一個分離出來的view中創建的，所以在這裏將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;
 //設置返回位置的座標系類型
 _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;
 //設置是否允許後臺定位
 //_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];
}

選點後彈出選擇定位範圍彈框

#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範圍後繪製範圍圈，開始的時候聲明的circleArr在這裏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，保證每次繪製的範圍都是最新的，同理annotationArr也是這個功能，因爲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:函數來生成標註對應的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;
}

至此，在地圖上選點進行簽到功能基本實現，另外，關於自定義的範圍圓圈的顏色，邊框大小都是可以自定義的，選點的標記也是可以自定義的，官方文檔有說明

總結

以上就是這篇文章的全部內容了，希望本文的內容對大家的學習或者工作具有一定的參考學習價值，如果有疑問大家可以留言交流，謝謝大家對神馬文庫的支持。

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