func showImageForUrl(url: String) -> Observable<Async<Any>> {
let result = RxAlamofire
.requestJSON(.get,
url,
parameters: nil)
.flatMap { (response, json) -> Observable<Any> in
return Observable.just(json)
}.async()
return result
}
网址字符串“ http://1.bp.blogspot.com/-KhiJ6WYQn8Q/T7ZXxb_KHxI/AAAAAAAABvM/_l134PCuEcA/s1600/dog+photos+3.jpg ”