How to call an API with the response from another API using RxSwift and Alamofire library?

Question

How to call an API with the response from another API using RxSwift and Alamofire library? In order to get a final result array. Can anyone suggest me one example..

Answer 1

您可以使用flatMapLatest运算符。

firstRequestObservable()
.debug("first request result")
.flatMapLatest { result in
    self.secondRequestObservable(with: result) 
}
.debug("second request result")

每次firstRequestObservable发出next事件时，之前（如果有）secondRequestObservable都会被新请求覆盖。

您可以使用RxAlamofire或将alamofire请求包装到observable中。 我对Alamofire的了解有限，但这是一个基本的例子，没有处理取消请求的可能性：

Observable<YourReturnType>.create { observable in
    Alamofire.request("https://my.api/request").responseJSON { response in
        if let json = response.result.value {
            // you would typically map this json to a relevant model, using Codable perhaps
            observable.onNext(json)
        }

        observable.onCompleted()
    }
    return Disposables.create { /* some code that can cancel the request */ }
}