RxSwift结合Moya获取天气数据，并结合tableView进行展示

效果图

Moya.gif

一. cocoPod安装RxSwift， RxCocoa， Alamofire， Moya/RxSwift

二. 模型

1. 枚举表示根据地理位置获取天气数据

    enum SkyAPI {
    //根据经纬度获取天气数据
    case getWeatherData(Location)
    }
   

2. 遵守TargetType协议，创建MoyaProvider

    extension SkyAPI: TargetType {
    var headers: [String : String]? {
        return nil
    }
   
    var baseURL: URL {
        return URL(string: BASE_URL)!
    }
    
    var path: String {
        switch self {
            case .getWeatherData(let location):
            return KEY + "/" + "\(location.latitude),\(location.longitude)"
        }
    }
    
    var method: Moya.Method {
        return .get
    }
    
    var sampleData: Data {
        return "找不到数据".data(using: String.Encoding.utf8)!
    }
    
    var validate: Bool {
        return true
    }
    
    var task: Task {
        return .requestPlain
    }
   
    }
   

3. 天气模型

    struct Sky {
    
    var humidity: Double?
    var time: TimeInterval?
    var windSpeed: Double?
    var summary: String?
    var tempera: Double?
    
    init(dict: [String: Any]?) {
        guard let dict = dict else {return}
        print(dict)
        self.humidity = dict["humidity"] as? Double
        self.time = dict["time"] as? Double
        self.windSpeed = dict["windSpeed"] as? Double
        self.summary = dict["summary"] as? String
        self.tempera = ((dict["temperatureMin"] as? Double ?? 0 ) - 32) / 1.8
    }
    }   
   
    class SkyModel: NSObject {
        var currently: Sky?
        var daily: [Sky]?
    
    init?(dict: [String: Any]?) {
        guard let dict = dict else{return nil}
        var skyDays = [Sky]()
        self.currently = Sky(dict: dict["currently"] as? [String: Any])
        if let daily = dict["daily"] as? [String: Any] {
            if let days = daily["data"] as? [[String: Any]] {
                for day in days {
                    skyDays.append(Sky(dict: day))
                }
            }
        }
        self.daily = skyDays
    }
    }
   

4. 请求数据

    class SkyViewModel: NSObject {
   
    override init() {
        super.init()
    }
   
    func loadWeatherData(location: Location) -> Observable<SkyModel?> {
        let provider = MoyaProvider<SkyAPI>()
        return Observable.create({ (observer) -> Disposable in
            provider.request(.getWeatherData(location), completion: { (response) in
                switch response {
                case let .success(result):
                    guard let result = try? result.mapJSON() else {return}
                    observer.onNext(SkyModel(dict: result as? [String: Any]))
                    observer.onCompleted()
                    
                case let .failure(error):
                    observer.onError(error)
                }
            })
            return Disposables.create()
        })
    }
   
    }
   

三.展示数据

1. 定位，获取地理位置

    func setupLocationManager() {
        locationManager = CLLocationManager()
        locationManager.delegate = self
        locationManager.desiredAccuracy = kCLLocationAccuracyBest
    }
    
    func startLocation() {
        locationManager.requestWhenInUseAuthorization()
        locationManager.startUpdatingLocation()
    }
    
    extension SkyViewController: CLLocationManagerDelegate {
    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        let location = locations.last
        let coordinate = location?.coordinate
        if let latitide = coordinate?.latitude, let longitude = coordinate?.longitude {
            myLocation = Location(name: "", latitude: latitide, longitude: longitude)
            viewModel.loadWeatherData(location: myLocation)
                .subscribe(onNext: {
                    if let skyModel = $0 {
                        self.skyModel = skyModel
                        self.setupUI()
                    }
                }, onError: {
                    print($0)
                })
                .disposed(by: disposedBag)
        }
        locationManager.stopUpdatingLocation()
    }
    }
   

2. 创建tableView，indicatorView

    func setupUI() {
    indicatorView.stopAnimating()
    indicatorView.removeFromSuperview()
    
    tableView = UITableView()
    tableView.register(SkyTableViewCell.self, forCellReuseIdentifier: "SkyCellID")
    tableView.tableFooterView = UIView()
    tableView.delegate = self
    tableView.dataSource = self
    view.addSubview(tableView)
    tableView.snp.makeConstraints { (make) in
        make.edges.equalToSuperview()
    }
    }
    
    func setupIndicator() {
    indicatorView = UIActivityIndicatorView()
    view.addSubview(indicatorView)
    indicatorView.startAnimating()
    indicatorView.activityIndicatorViewStyle = .gray
    
    indicatorView.snp.makeConstraints { (make) in
        make.centerX.centerY.equalToSuperview()
    }
    }
   

3. 绑定数据

    extension SkyViewController: UITableViewDelegate, UITableViewDataSource {
    func numberOfSections(in tableView: UITableView) -> Int {
        return 1
    }
    
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return skyModel.daily?.count ?? 0
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "SkyCellID") as! SkyTableViewCell
        cell.displayData(sky: skyModel.daily![indexPath.row])
        return cell
        
    }
    
    func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
        return 60
    }
    
    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        tableView.deselectRow(at: indexPath, animated: true)
    }
    }
   

4. 自定义cell

    class SkyTableViewCell: UITableViewCell {
        override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
            super.init(style: UITableViewCellStyle.subtitle, reuseIdentifier: reuseIdentifier)
    
    }
    
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    func displayData(sky: Sky) {
        textLabel?.text = "湿度: \(sky.humidity ?? 0)  温度: \(sky.tempera ?? 0)  风速: \(sky.windSpeed ?? 0)"
        detailTextLabel?.text = "描述: \(sky.summary ?? "")"
   
    }
    }