详情
xCode 9.1，斯威夫特 4
特点：
- 易于阅读的代码
- 现成的模板（添加更多请求很容易）
- 具有异步数据处理的嵌入式解决方案
- 完整示例
样本 1
使用闭包返回数据
Data1.searchRequest(term: "jack johnson") { json, error in
print(error ?? "nil")
print(json ?? "nil")
print("Update views")
}
完整样本 1
数据类
import Alamofire
class Data1 {
static fileprivate let queue = DispatchQueue(label: "requests.queue", qos: .utility)
static fileprivate let mainQueue = DispatchQueue.main
fileprivate class func make(request: DataRequest, closure: @escaping (_ json: [String: Any]?, _ error: Error?)->()) {
request.responseJSON(queue: Data1.queue) { response in
// print(response.request ?? "nil") // original URL request
// print(response.response ?? "nil") // HTTP URL response
// print(response.data ?? "nil") // server data
//print(response.result ?? "nil") // result of response serialization
switch response.result {
case .failure(let error):
Data1.mainQueue.async {
closure(nil, error)
}
case .success(let data):
Data1.mainQueue.async {
closure((data as? [String: Any]) ?? [:], nil)
}
}
}
}
class func searchRequest(term: String, closure: @escaping (_ json: [String: Any]?, _ error: Error?)->()) {
let request = Alamofire.request("https://itunes.apple.com/search?term=\(term.replacingOccurrences(of: " ", with: "+"))")
Data1.make(request: request) { json, error in
closure(json, error)
}
}
}
UIViewController
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
Data1.searchRequest(term: "jack johnson") { json, error in
print(error ?? "nil")
print(json ?? "nil")
print("Update views")
}
}
}
样本 2
使用委托返回数据
// ....
var data = Data2()
data.delegate = self
data.searchRequest(term: "jack johnson")
// ....
extension ViewController: Data2Delegate {
func searchRequest(response json: [String : Any]?, error: Error?) {
print(error ?? "nil")
print(json ?? "nil")
print("Update views")
}
}
完整样本 2
数据类
import Alamofire
protocol Data2Delegate: class {
func searchRequest(response json: [String: Any]?, error: Error?)
}
class Data2 {
fileprivate let queue = DispatchQueue(label: "requests.queue", qos: .utility)
fileprivate let mainQueue = DispatchQueue.main
weak var delegate: Data2Delegate?
fileprivate func make(request: DataRequest, closure: @escaping (_ json: [String: Any]?, _ error: Error?)->()) {
request.responseJSON(queue: queue) { response in
// print(response.request ?? "nil") // original URL request
// print(response.response ?? "nil") // HTTP URL response
// print(response.data ?? "nil") // server data
//print(response.result ?? "nil") // result of response serialization
switch response.result {
case .failure(let error):
self.mainQueue.async {
closure(nil, error)
}
case .success(let data):
self.mainQueue.async {
closure((data as? [String: Any]) ?? [:], nil)
}
}
}
}
func searchRequest(term: String) {
let request = Alamofire.request("https://itunes.apple.com/search?term=\(term.replacingOccurrences(of: " ", with: "+"))")
make(request: request) { json, error in
self.delegate?.searchRequest(response: json, error: error)
}
}
}
UIViewController
import UIKit
class ViewController: UIViewController {
private var data = Data2()
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
data.delegate = self
data.searchRequest(term: "jack johnson")
}
}
extension ViewController: Data2Delegate {
func searchRequest(response json: [String : Any]?, error: Error?) {
print(error ?? "nil")
print(json ?? "nil")
print("Update views")
}
}
样本 3
使用PromiseKit返回数据
_ = data.searchRequest(term: "jack johnson").then { response in
print(response.error ?? "nil")
print(response.json ?? "nil")
print("Update views")
return .void
}
完整样本 3
数据类
进口阿拉莫火
导入 PromiseKit
class Data3 {
fileprivate let queue = DispatchQueue(label: "requests.queue", qos: .utility)
fileprivate let mainQueue = DispatchQueue.main
fileprivate func make(request: DataRequest) -> Promise<(json:[String: Any]?, error: Error?)> {
return Promise { fulfill, reject in
request.responseJSON(queue: queue) { response in
// print(response.request ?? "nil") // original URL request
// print(response.response ?? "nil") // HTTP URL response
// print(response.data ?? "nil") // server data
//print(response.result ?? "nil") // result of response serialization
switch response.result {
case .failure(let error):
self.mainQueue.async {
fulfill((nil, error))
}
case .success(let data):
self.mainQueue.async {
fulfill(((data as? [String: Any]) ?? [:], nil))
}
}
}
}
}
func searchRequest(term: String) -> Promise<(json:[String: Any]?, error: Error?)> {
let request = Alamofire.request("https://itunes.apple.com/search?term=\(term.replacingOccurrences(of: " ", with: "+"))")
return make(request: request)
}
}
extension AnyPromise {
class var void: AnyPromise {
return AnyPromise(Promise<Void>())
}
}
UIViewController
import UIKit
import PromiseKit
class ViewController: UIViewController {
private var data = Data3()
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
_ = data.searchRequest(term: "jack johnson").then { response in
print(response.error ?? "nil")
print(response.json ?? "nil")
print("Update views")
return .void
}
}
}