iOS應(yīng)用中調(diào)用支付寶支付的方法
默認后臺已經(jīng)對orderString進行處理，app中直接能拿到orderString，然后進行調(diào)用。
首先去支付寶官網(wǎng)下載iOSDemo，導入到工程中

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然后在TARGETS點擊General，找到Linked Frameworks and Libraries，導入如下的支付寶SDK的依賴庫

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AlipaySDK.defaultService().payOrder(orderString, fromScheme: appScheme){
                        result in
                    }

調(diào)用支付寶支付就是這一句話
orderString是服務(wù)器返回的，appScheme是自己定義的，不能重復，需要在代碼中定義

let appScheme = "yourappScheme"http://你自己的appScheme

然后前往工程，TARGETS,Info下面的URL Types，新增一個

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千萬記住yourappScheme與 URL Schemes一致
為了拿到支付寶返回的數(shù)據(jù)，需要在AppDelegate.swift增加

func application(_ app: UIApplication, open url: URL, options: [UIApplicationOpenURLOptionsKey : Any] = [:]) -> Bool {
        if url.host == "safepay"{
            AlipaySDK.defaultService().processOrder(withPaymentResult: url){
                value in
                let code = value!
                let resultStatus = code["resultStatus"] as!String
                var content = ""
                switch resultStatus {
                case "9000":
                    content = "支付成功"
                    NotificationCenter.default.post(name: NSNotification.Name(rawValue: "aliPaySucceess"), object: content)
                case "8000":
                    content = "訂單正在處理中"
                    NotificationCenter.default.post(name: NSNotification.Name(rawValue: "aliPayUnknowStatus"), object: content)
                case "4000":
                    content = "支付失敗"
                    NotificationCenter.default.post(name: NSNotification.Name(rawValue: "aliPayDefeat"), object: content)
                case "5000":
                    content = "重復請求"
                    NotificationCenter.default.post(name: NSNotification.Name(rawValue: "aliPayDefeat"), object: content)
                case "6001":
                    content = "中途取消"
                    NotificationCenter.default.post(name: NSNotification.Name(rawValue: "aliPayDefeat"), object: content)
                case "6002":
                    content = "網(wǎng)絡(luò)連接出錯"
                    NotificationCenter.default.post(name: NSNotification.Name(rawValue: "aliPayDefault"), object: content)
                case "6004":
                    content = "支付結(jié)果未知"
                    NotificationCenter.default.post(name: NSNotification.Name(rawValue: "aliPayUnknowStatus"), object: content)
                default:
                    content = "支付失敗"
                    NotificationCenter.default.post(name: NSNotification.Name(rawValue: "aliPayDefeat"), object: content)
                    break
                }
            }
        }
        return true
    }

附上支付寶官方對于resultStatus的解釋

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NotificationCenter處是給你的viewController發(fā)消息，說明支付寶回調(diào)了數(shù)據(jù)
關(guān)于2018年最新的iOS支付寶支付就是這樣，如果寫的不好還請見諒～