iOS 高德地圖 地理圍欄

地理圍欄是一個（或多個）圓形的地理邊界作爲虛擬圍欄，當設備進入、離開該區域時，可以接收到消息通知。

地理圍欄的半徑數值需要大於0，如果 APP 退出，圍欄隨即失效。

//使用說明

//包含的頭文件

#import <MAMapKit/MAMapKit.h>
#import <AMapLocationKit/AMapLocationKit.h>

//視圖控制器需要遵循的協議
<MAMapViewDelegate, AMapLocationManagerDelegate>

//視圖控制器需要的屬性
@property (nonatomic, strong) MAMapView *mapView;

@property (nonatomic, strong) AMapLocationManager *locationManager;
@property (nonatomic, strong) NSMutableArray *regions;

//應初始化的內容
- (void)viewDidLoad
{
    [super viewDidLoad];

    [self.view setBackgroundColor:[UIColor whiteColor]];

    [self initMapView];

    [self configLocationManager];

    self.regions = [[NSMutableArray alloc] init];

    self.mapView.showsUserLocation = YES;
}
//初始化地圖
- (void)initMapView
{
    if (self.mapView == nil)
    {
        self.mapView = [[MAMapView alloc] initWithFrame:self.view.bounds];
        [self.mapView setDelegate:self];

        [self.view addSubview:self.mapView];
    }
}
//初始化位置管理器
- (void)configLocationManager
{
    self.locationManager = [[AMapLocationManager alloc] init];

    [self.locationManager setDelegate:self];

    //設置期望定位精度
    [self.locationManager setDesiredAccuracy:kCLLocationAccuracyHundredMeters];

    //設置不允許系統暫停定位
    [self.locationManager setPausesLocationUpdatesAutomatically:NO];

    //設置允許在後臺定位
    [self.locationManager setAllowsBackgroundLocationUpdates:YES];
}



- (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];

    self.navigationController.toolbar.translucent   = YES;
    self.navigationController.toolbarHidden         = YES;
}

- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];
    [self getCurrentLocation];
}

//視圖消失時應實現的內容

- (void)viewDidDisappear:(BOOL)animated
{
    [super viewDidDisappear:animated];

    //停止地理圍欄
    [self.regions enumerateObjectsUsingBlock:^(id  _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
        [self.locationManager stopMonitoringForRegion:(AMapLocationRegion *)obj];
    }];
}




//核心方法
//創建圓形的定位區域cirRegion200
AMapLocationCircleRegion *cirRegion200 = [[AMapLocationCircleRegion alloc] initWithCenter:coordinate
                                                                                       radius:200.0
                                                                                   identifier:@"circleRegion200"];
//創建圓形的定位區域cirRegion300
AMapLocationCircleRegion *cirRegion300 = [[AMapLocationCircleRegion alloc] initWithCenter:coordinate
                                                                                       radius:300.0
                                                                                   identifier:@"circleRegion300"];

//添加地理圍欄
[self.locationManager startMonitoringForRegion:cirRegion200];
[self.locationManager startMonitoringForRegion:cirRegion300];

//保存地理圍欄
[self.regions addObject:cirRegion200];
[self.regions addObject:cirRegion300];

//添加Overlay
MACircle *circle200 = [MACircle circleWithCenterCoordinate:coordinate radius:200.0];
MACircle *circle300 = [MACircle circleWithCenterCoordinate:coordinate radius:300.0];
[self.mapView addOverlay:circle200];
[self.mapView addOverlay:circle300];

[self.mapView setVisibleMapRect:circle300.boundingMapRect];

//接收地理圍欄回調

- (void)amapLocationManager:(AMapLocationManager *)manager didEnterRegion:(AMapLocationRegion *)region
{
    NSLog(@"進入圍欄:%@", region);
}

- (void)amapLocationManager:(AMapLocationManager *)manager didExitRegion:(AMapLocationRegion *)region
{
    NSLog(@"走出圍欄:%@", region);
}
//--------------------------------------------

.h
#import <UIKit/UIKit.h>
#import <MAMapKit/MAMapKit.h>
#import <AMapLocationKit/AMapLocationKit.h>

@interface MonitoringRegionViewController : UIViewController

@property (nonatomic, strong) MAMapView *mapView;

@property (nonatomic, strong) AMapLocationManager *locationManager;

@end

.m
#import "MonitoringRegionViewController.h"

@interface MonitoringRegionViewController ()<MAMapViewDelegate, AMapLocationManagerDelegate>

@property (nonatomic, strong) NSMutableArray *regions;

@end

@implementation MonitoringRegionViewController

#pragma mark - Add Regions

- (void)getCurrentLocation
{
    //獲取一次用戶的當前位置，方便添加地理圍欄
    __weak typeof(self) weakSelf = self;
    [self.locationManager requestLocationWithReGeocode:NO completionBlock:^(CLLocation *location, AMapLocationReGeocode *regeocode, NSError *error) {
        [weakSelf addCircleReionForCoordinate:location.coordinate];
    }];
}

- (void)addCircleReionForCoordinate:(CLLocationCoordinate2D)coordinate
{
    //創建圓形地理圍欄
    AMapLocationCircleRegion *cirRegion200 = [[AMapLocationCircleRegion alloc] initWithCenter:coordinate
                                                                                       radius:200.0
                                                                                   identifier:@"circleRegion200"];

    AMapLocationCircleRegion *cirRegion300 = [[AMapLocationCircleRegion alloc] initWithCenter:coordinate
                                                                                       radius:300.0
                                                                                   identifier:@"circleRegion300"];

    //添加地理圍欄
    [self.locationManager startMonitoringForRegion:cirRegion200];
    [self.locationManager startMonitoringForRegion:cirRegion300];

    //保存地理圍欄
    [self.regions addObject:cirRegion200];
    [self.regions addObject:cirRegion300];

    //添加地理圍欄對應的Overlay，方便查看
    MACircle *circle200 = [MACircle circleWithCenterCoordinate:coordinate radius:200.0];
    MACircle *circle300 = [MACircle circleWithCenterCoordinate:coordinate radius:300.0];
    [self.mapView addOverlay:circle200];
    [self.mapView addOverlay:circle300];

    [self.mapView setVisibleMapRect:circle300.boundingMapRect];
}

#pragma mark - Action Handle

- (void)configLocationManager
{
    self.locationManager = [[AMapLocationManager alloc] init];

    [self.locationManager setDelegate:self];

    //設置期望定位精度
    [self.locationManager setDesiredAccuracy:kCLLocationAccuracyHundredMeters];

    //設置不允許系統暫停定位
    [self.locationManager setPausesLocationUpdatesAutomatically:NO];

    //設置允許在後臺定位
    [self.locationManager setAllowsBackgroundLocationUpdates:YES];
}

#pragma mark - AMapLocationManagerDelegate

- (void)amapLocationManager:(AMapLocationManager *)manager didFailWithError:(NSError *)error
{
    NSLog(@"locationError:{%ld;%@}", (long)error.code, error.localizedDescription);
}

- (void)amapLocationManager:(AMapLocationManager *)manager didStartMonitoringForRegion:(AMapLocationRegion *)region
{
    NSLog(@"didStartMonitoringForRegion:%@", region);
}

- (void)amapLocationManager:(AMapLocationManager *)manager monitoringDidFailForRegion:(AMapLocationRegion *)region withError:(NSError *)error
{
    NSLog(@"monitoringDidFailForRegion:%@", error.localizedDescription);
}

- (void)amapLocationManager:(AMapLocationManager *)manager didEnterRegion:(AMapLocationRegion *)region
{
    NSLog(@"didEnterRegion:%@", region);
}

- (void)amapLocationManager:(AMapLocationManager *)manager didExitRegion:(AMapLocationRegion *)region
{
    NSLog(@"didExitRegion:%@", region);
}

- (void)amapLocationManager:(AMapLocationManager *)manager didDetermineState:(AMapLocationRegionState)state forRegion:(AMapLocationRegion *)region
{
    NSLog(@"didDetermineState:%@; state:%ld", region, (long)state);
}

#pragma mark - Initialization

- (void)initMapView
{
    if (self.mapView == nil)
    {
        self.mapView = [[MAMapView alloc] initWithFrame:self.view.bounds];
        [self.mapView setDelegate:self];

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

#pragma mark - Life Cycle

- (void)viewDidLoad
{
    [super viewDidLoad];

    [self.view setBackgroundColor:[UIColor whiteColor]];

    [self initMapView];

    [self configLocationManager];

    self.regions = [[NSMutableArray alloc] init];

    self.mapView.showsUserLocation = YES;
}

- (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];

    self.navigationController.toolbar.translucent   = YES;
    self.navigationController.toolbarHidden         = YES;
}

- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];
    [self getCurrentLocation];
}

- (void)viewDidDisappear:(BOOL)animated
{
    [super viewDidDisappear:animated];

    //停止地理圍欄
    [self.regions enumerateObjectsUsingBlock:^(id  _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
        [self.locationManager stopMonitoringForRegion:(AMapLocationRegion *)obj];
    }];
}

#pragma mark - MAMapViewDelegate

//根據overlay生成對應的Renderer(圖像渲染)

- (MAOverlayRenderer *)mapView:(MAMapView *)mapView rendererForOverlay:(id <MAOverlay>)overlay
{
    if ([overlay isKindOfClass:[MAPolygon class]])
    {
        MAPolygonRenderer *polylineRenderer = [[MAPolygonRenderer alloc] initWithPolygon:overlay];
        polylineRenderer.lineWidth = 5.0f;
        polylineRenderer.strokeColor = [UIColor redColor];

        return polylineRenderer;
    }
    else if ([overlay isKindOfClass:[MACircle class]])
    {
        MACircleRenderer *circleRenderer = [[MACircleRenderer alloc] initWithCircle:overlay];
        circleRenderer.lineWidth = 5.0f;
        circleRenderer.strokeColor = [UIColor blueColor];

        return circleRenderer;
    }

    return nil;
}

@end