黑心医院开发总结

莆田系医院作的恶已经人尽皆知，为了让家人远离附近的莆田系医院，我特意开发了一款APP供大家使用，现已上架AppStore，地址在这里，而因为实现简单又不涉及许多隐私，所以把这个app开源了，地址在这。

这是我首个个人作品，也是首个全用swift完成的作品。当然使用swift进行开发早在14年就开始了，不过因为版本更新太快，不得不放弃了后续维护，改用OC继续实现。如今swift的稳定性已经相当可观，第三方库的支持也比较到位了，是时候全面转向swift的怀抱了。今后的开源项目也将尽量都用swift来实现。

黑心医院的实现非常简单:

1. 从凤凰网获取名单，然后到高德地图上获取地理位置数据，并保存下来。
2. 使用SwiftyJSON进行解析，使用Realm进行存储

func loadData() -> Void {
      let realm = try! Realm()
      
      hospitals = realm.objects(Hospital)
      print("count = \(hospitals.count)")
      if hospitals.count == 0 {
          let path = NSBundle.mainBundle().pathForResource("hospital", ofType: "geojson")
          let data = NSFileManager.defaultManager().contentsAtPath(path!)
          
          let dic = try!  NSJSONSerialization.JSONObjectWithData(data!, options: NSJSONReadingOptions.AllowFragments) as? NSDictionary
          
          let json = JSON(dic!)
          
          print(json)
          
          let array = json["features"]
          for hos in array.array! {
              let name = hos["properties"]["name"].string
              let lng = hos["geometry"]["coordinates"][0].double
              let lat = hos["geometry"]["coordinates"][1].double
              
              let hospital: Hospital = Hospital()
              hospital.name = name!
              hospital.lat = lat!
              hospital.lng = lng!
              
              try! realm.write {
                  realm.add(hospital)
              }
          }
          
          hospitals = realm.objects(Hospital)
      }
      
      print("count = \(hospitals.count)")
  }

这里我曾经想把做好的realm数据库直接放进bundle并设为只读，然后直接读取bundle中的数据库，但是无奈并没有这个权限，只好放弃了。

3. 使用MapKit进行地图绘制

override func viewDidLoad() {
      super.viewDidLoad()

      // Do any additional setup after loading the view.
      
      locationManager.delegate = self
      locationManager.desiredAccuracy = kCLLocationAccuracyBest
      locationManager.requestWhenInUseAuthorization()
      locationManager.startUpdatingLocation()
      
      mapView.showsUserLocation = true
      for hospital in hospitals {
          let ann = MKPointAnnotation()
          ann.title = hospital.name
          let coordinate = CLLocation(latitude: hospital.lat, longitude: hospital.lng).coordinate
          ann.coordinate = coordinate
          mapView.addAnnotation(ann)
      }
  }

//MARK: mapview delegate
  func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? {
      
      if annotation is MKUserLocation {
          //return nil so map view draws "blue dot" for standard user location
          return nil
      }
      
      let reuseId = "pin"
      
      var pinView = mapView.dequeueReusableAnnotationViewWithIdentifier(reuseId) as? MKPinAnnotationView
      if pinView == nil {
          pinView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: reuseId)
          pinView!.canShowCallout = true
          pinView!.animatesDrop = true
//            pinView!.pinTintColor = UIColor.purpleColor()
          pinView!.rightCalloutAccessoryView = UIButton(type: .DetailDisclosure)
          
      }
      else {
          pinView!.annotation = annotation
      }
      return pinView
  }
  
  var locationUpdated = false
  
  func mapView(mapView: MKMapView, didUpdateUserLocation userLocation: MKUserLocation) {
      if locationUpdated == false {
          
          //创建一个MKCoordinateSpan对象，设置地图的范围（越小越精确）
          let latDelta = 0.5
          let longDelta = 0.5
          let currentLocationSpan:MKCoordinateSpan = MKCoordinateSpanMake(latDelta, longDelta)
          
          //定义地图区域和中心坐标（
          //使用自定义位置
          let center:CLLocation = userLocation.location!
          let currentRegion:MKCoordinateRegion = MKCoordinateRegion(center: center.coordinate,
                                                                    span: currentLocationSpan)
          
          //设置显示区域
          mapView.setRegion(currentRegion, animated: true)
          locationUpdated = true
      }
  }
  

4. 使用UISearchController进行检索
   本来检索想用UISearchDIsplayController做的，由于只支持最新版本，才发现这玩意已经被弃用了。从后面的版本开始需要使用UISearchController了。

override func viewDidLoad() {
      super.viewDidLoad()

      // Uncomment the following line to preserve selection between presentations
      // self.clearsSelectionOnViewWillAppear = false

      // Uncomment the following line to display an Edit button in the navigation bar for this view controller.
      // self.navigationItem.rightBarButtonItem = self.editButtonItem()
      searchController = UISearchController(searchResultsController: nil)
      searchController.delegate = self
      searchController.searchResultsUpdater = self
      searchController.dimsBackgroundDuringPresentation = false
      searchController.obscuresBackgroundDuringPresentation = false
      searchController.hidesNavigationBarDuringPresentation = false
      self.tableView.tableHeaderView = searchController.searchBar
  }

func updateSearchResultsForSearchController(searchController: UISearchController) {
      let searchText = searchController.searchBar.text
      
      var arr = Array()
      for hospital in self.hospitals {
          if (hospital.name as NSString).containsString(searchText!) {
              arr.append(hospital)
          }
      }
      searchResults = arr
      self.tableView.reloadData()
  }

5. 使用UIActivityController 来分享

func mapView(mapView: MKMapView, annotationView view: MKAnnotationView, calloutAccessoryControlTapped control: UIControl) {
      let image = UIImage(named: "60")
      let url = NSURL(string: "http://finance.ifeng.com/a/20160504/14362042_0.shtml")
      let string = (view.annotation?.title!)!+"属于莆田系医院，小伙伴们千万不要去！"
      let activityController = UIActivityViewController(activityItems: [image! ,url!,string], applicationActivities: nil)
      self.presentViewController(activityController, animated: true, completion: nil)
  }

原本想使用微信分享的，但一来微信分享需要引入微信库，二来还要各种依赖，集成好了之后又被我删掉了。反正自带的分享也可以支持微信的，而且代码相当简单。

我也知道github上有些开源项目正在收集莆田系医院的数据，不过一来没提供获取数据与提交数据的接口，仍然是本地数据的模式，二来没有地理位置的信息，我觉得相比什么电话网址这些数据，地理位置更有用一些。所以目前我还是会维持使用本地数据的方式，直到有可用的接口为止。