所以我目前有以下内容：
class ViewController: UIViewController {
class Identity{
let baseUrl = "superSecretURL"
var _username: String = ""
var _password: String = ""
var _apiKey: String = ""
init(){
}
init(username: String,apiKey: String){
_username = username
_apiKey = apiKey
}
init(username: String,password: String){
_username = username
_password = password
}
func loginPassword() -> String{
var loginJSON = ["auth": ["passwordCredentials": ["username": _username,"password": _password]]];
var returnJSON: String
request(.POST,baseUrl,parameters: loginJSON,encoding: .JSON)
.responseJSON { (request,response,data,error) in
if let anError = error
{
// got an error in getting the data,need to handle it
println("error calling POST on /posts")
println(error)
}
else if let data: AnyObject = data
{
// handle the results as JSON,without a bunch of nested if loops
let post = JSON(data)
// to make sure it posted,print the results
println("JSON Returned")
}
}
}
}
var i = Identity(username: "secretName",password: "complicatedPassword")
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view,typically from a nib.
println("Before Call")
println("After Call")
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
基本上我希望能够调用println(“Before Call”)然后从loginPassword()方法接收响应,然后println(“After Call”).这是我相信同步,但我无法找到一种方法让它工作,整个线程的事情让我感到困惑.
我基本上希望能够说：
if i.loginPassword(){ // do some login stuff }else{ // do some error stuff }
任何帮助或指针赞赏.
您需要在loginPassword()函数中设置要调用的回调函数.
原文链接：https://www.f2er.com/swift/318595.html这可能是实现它的一种方式：
func loginPassword(callback: ((isOk: Bool)->Void)?) -> String{
var loginJSON = ["auth": ["passwordCredentials": ["username": _username,"password": _password]]];
var returnJSON: String
request(.POST,encoding: .JSON)
.responseJSON { (request,error) in
if let anError = error{
// got an error in getting the data,need to handle it
println("error calling POST on /posts")
println(error)
callback?(isOk: false)
}
else if let data: AnyObject = data{
// handle the results as JSON,without a bunch of nested if loops
let post = JSON(data)
// to make sure it posted,print the results
println("JSON Returned")
callback?(isOk: true)
}
}
}
然后…
override func viewDidLoad() {
super.viewDidLoad()
var identity = Identity(username: "John Apleseed",apiKey: "213123123")
identity.loginPassword { (isOK) -> Void in
if (isOK) {
//do good stuff here
}else{
// do error handling here
}
}
}
UPDATE
override func viewDidLoad() {
super.viewDidLoad()
var identity = Identity(username: "John Apleseed",apiKey: "213123123")
identity.loginPassword(handlePasswordRequest)
}
并且您可以添加尽可能多的回调处理程序,而无需乱搞一堆嵌套的闭包……
private func handlePasswordRequest(isOK: Bool){
if (isOK) {
//do good stuff here
}else{
// do error handling here
}
}
更新2
如果您需要在调用层次结构中深入调用回调,则需要将回调作为每个先前闭包的参数传递.
更新3
我会尝试一下RxAlamofire和RxSwift
