斯威夫特4
使用Alamofire和Api Post方法创建应用
使用Xcode 9为Swift 3安装pod文件-pod'Alamofire'，'〜> 4.0'
创建Webservices.swift类，导入Alamofire
设计故事板，登录视图
为ViewControllerClass插入以下代码
import UIKit
class ViewController: UIViewController {
@IBOutlet var usernameTextField: UITextField!
@IBOutlet var passwordTextField: UITextField!
var usertypeStr :String = "-----------"
var loginDictionary : NSDictionary?
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
@IBAction func loginButtonClicked(_ sender: Any) {
WebServices.userLogin(userName: usernameTextField.text!, password: passwordTextField.text!,userType: usertypeStr) {(result, message, status )in
if status {
let loginDetails = result as? WebServices
self.loginDictionary = loginDetails?.loginData
if self.loginDictionary?["status"] as? String == "error"
{
self.alertMessage(alerttitle: "Login Error", (self.loginDictionary?["message"] as? String)!)
} else if self.loginDictionary?["status"] as? String == "ok" {
self.alertMessage(alerttitle: "", "Success")
}else {
self.alertMessage(alerttitle: "", (self.loginDictionary?["message"] as? String)!)
}
} else {
self.alertMessage(alerttitle: "", "Sorry")
}
}
}
func alertMessage(alerttitle:String,_ message : String){
let alertViewController = UIAlertController(title:alerttitle, message:message, preferredStyle: .alert)
alertViewController.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
present(alertViewController, animated: true, completion: nil)
}
}
为WebserviceClass插入以下代码
import Foundation
import Alamofire
class WebServices: NSObject {
enum WebServiceNames: String {
case baseUrl = "https://---------------"
case UserLogin = "------------"
}
// MARK: - Login Variables
var loginData : NSDictionary?
class func userLogin(userName: String,password : String,userType : String, completion : @escaping (_ response : AnyObject?, _ message: String?, _ success : Bool)-> ()) {
let url = WebServiceNames.baseUrl.rawValue + WebServiceNames.UserLogin.rawValue
let params = ["USER": userName,"PASS":password,"API_Key" : userType]
WebServices.postWebService(urlString: url, params: params as [String : AnyObject]) { (response, message, status) in
print(response ?? "Error")
let result = WebServices()
if let data = response as? NSDictionary {
print(data)
result.loginData = data
completion(result, "Success", true)
}else {
completion("" as AnyObject?, "Failed", false)
}
}
}
//MARK :- Post
class func postWebService(urlString: String, params: [String : AnyObject], completion : @escaping (_ response : AnyObject?, _ message: String?, _ success : Bool)-> Void) {
alamofireFunction(urlString: urlString, method: .post, paramters: params) { (response, message, success) in
if response != nil {
completion(response as AnyObject?, "", true)
}else{
completion(nil, "", false)
}
}
}
class func alamofireFunction(urlString : String, method : Alamofire.HTTPMethod, paramters : [String : AnyObject], completion : @escaping (_ response : AnyObject?, _ message: String?, _ success : Bool)-> Void){
if method == Alamofire.HTTPMethod.post {
Alamofire.request(urlString, method: .post, parameters: paramters, encoding: URLEncoding.default, headers: nil).responseJSON { (response:DataResponse<Any>) in
print(urlString)
if response.result.isSuccess{
completion(response.result.value as AnyObject?, "", true)
}else{
completion(nil, "", false)
}
}
}else {
Alamofire.request(urlString).responseJSON { (response) in
if response.result.isSuccess{
completion(response.result.value as AnyObject?, "", true)
}else{
completion(nil, "", false)
}
}
}
}
//Mark:-Cancel
class func cancelAllRequests()
{
Alamofire.SessionManager.default.session.getTasksWithCompletionHandler { dataTasks, uploadTasks, downloadTasks in
dataTasks.forEach { $0.cancel() }
uploadTasks.forEach { $0.cancel() }
downloadTasks.forEach { $0.cancel() }
}
}
}