• 設定 plist 配置檔案

• 匯入兩個地圖應用框架

#import <CoreLocation/CoreLocation.h>
#import <MapKit/MapKit.h>

• 定義地圖和地位屬性

@property (nonatomic , strong) MKMapView *mapView;        ///<地圖
@property (nonatomic , strong) CLLocationManager *locManager;   ///<獲得定位

• 重寫兩個屬性的 getter 方法

///重寫 getter
- (CLLocationManager *)locManager{
    
    if (!_locManager) {
        
        _locManager = [[CLLocationManager alloc]init];
        _locManager.activityType = CLActivityTypeFitness;   ///<步行導航
        _locManager.delegate = self;
    }
    
    return _locManager;
}

- (MKMapView *)mapView{
    
    if (!_mapView) {
        
        self.mapView = [[MKMapView alloc]initWithFrame:self.view.frame];
        self.mapView.delegate = self;
        //設定地圖型別
        _mapView.mapType = MKMapTypeStandard;   //平面地圖
    }
    
    return _mapView;
}
 

• 在viewDidLoad 中設定使用者授權

//申請使用者授權
[self.locManager requestWhenInUseAuthorization];

• 遵守協議

<CLLocationManagerDelegate ,MKMapViewDelegate>

• 得到當前位置觸發事件

 [_locManager startUpdatingLocation];    //開始更新當前位置資訊

• CLLocationManagerDelegate代理方法中獲取當前位置

- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray<CLLocation *> *)locations{
    
    //得到當前位置
    CLLocation *currentLocation = locations.lastObject;
    
    //位置    ,此物件已經採用了 MK 協議
    MKPointAnnotation *point = [[MKPointAnnotation alloc]init];
    point.coordinate = currentLocation.coordinate;
    
    point.title = @"當前位置";
    //地址解析
    CLGeocoder *gecoder = [[CLGeocoder alloc]init];
    
    [gecoder reverseGeocodeLocation:currentLocation completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {
        
        CLPlacemark *place = placemarks.lastObject;
        
        point.subtitle = place.name;
    }];
    
    //新增大頭針
    [_mapView addAnnotation:point];
    
    //需要將地圖的顯示區域變小
    MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance(currentLocation.coordinate, 800, 800);
    [_mapView setRegion:region animated:YES];
}
 

• MKMapViewDelegate代理設定描邊

//設定錨點樣式
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation{
    
    MKPinAnnotationView *pin = (MKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:@"pin"];
    
    if (!pin) {
        
        pin = [[MKPinAnnotationView alloc]initWithAnnotation:annotation reuseIdentifier:@"pin"];
    }
    
    pin.pinTintColor = [MKPinAnnotationView purplePinColor];
    pin.animatesDrop = YES;
    pin.canShowCallout = YES;
    
    return pin;
}
 

• 定位自定義的位置(您輸入的位置) 點選事件

//傳遞過來省會的字串做地址解析
    CLGeocoder *geocoder = [[CLGeocoder alloc]init];
    [geocoder geocodeAddressString:@"河北省邯鄲市永年區" completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {
        
        CLPlacemark *place = placemarks.lastObject;
        CLLocationCoordinate2D coord = place.location.coordinate;
        
        dispatch_async(dispatch_get_main_queue(), ^{
            
            //位置    ,此物件已經採用了 MK 協議
            MKPointAnnotation *point = [[MKPointAnnotation alloc]init];
            point.coordinate = coord;
            //新增大頭針
            [self.mapView addAnnotation:point];
            
            point.title = @"當前位置";
            
            [geocoder reverseGeocodeLocation:place.location completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {
                
                CLPlacemark *place = placemarks.lastObject;
                
                point.subtitle = place.name;
            }];
            
            //需要將地圖的顯示區域變小
            MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance(coord, 800, 800);
            [self.mapView setRegion:region animated:YES];
        });
    }];