Question

我正在使用Alamofire向API发布参数。
我试图根据我们是否有密码使用不同的参数。

请参阅下面的部分代码：

    let parameters: [String: Any] = [:]

    if (password != nil) {
        let parameters: [String : Any] = [
            "displayName": firstName + " " + lastName,
            "firstName": firstName,
            "lastName": lastName,
            "password": password ?? "",
            "passwordConfirmation": password ?? "",
            "location": location?.json ?? [:],
            "wallet": wallet?.json ?? [:],
            "gender": gender.rawValue,
            "avatarId": 1,
            "email": email,
            "authExternalAccessToken": accessToken ?? "",
        ]
    } else {
        let parameters: [String : Any] = [
            "displayName": firstName + " " + lastName,
            "firstName": firstName,
            "lastName": lastName,
            "password": password ?? "",
            "passwordConfirmation": password ?? "",
            "location": location?.json ?? [:],
            "wallet": wallet?.json ?? [:],
            "gender": gender.rawValue,
            "avatarId": 1,
            "email": email,
            "authExternalAccessToken": accessToken ?? "",
        ]
    }

    Alamofire.request(url, method: .post, parameters: parameters, encoding: JSONEncoding.default, headers: [

当我在if / else语句后面设置一个断点时，它说有0个元素。
我做错了什么？我可能也可以加快速度，因为建立这种方式需要更长的时间。

Answer 1

在if-else块中，您正在创建新常量parameters，因此请更改此代码。

let parameters: [String: Any]

if (password != nil) {
    parameters = [
        "displayName": firstName + " " + lastName,
        "firstName": firstName,
        "lastName": lastName,
        "password": password ?? "",
        "passwordConfirmation": password ?? "",
        "location": location?.json ?? [:],
        "wallet": wallet?.json ?? [:],
        "gender": gender.rawValue,
        "avatarId": 1,
        "email": email,
        "authExternalAccessToken": accessToken ?? "",
    ] as [String : Any]
} else {
    parameters = [
        "displayName": firstName + " " + lastName,
        "firstName": firstName,
        "lastName": lastName,
        "password": password ?? "",
        "passwordConfirmation": password ?? "",
        "location": location?.json ?? [:],
        "wallet": wallet?.json ?? [:],
        "gender": gender.rawValue,
        "avatarId": 1,
        "email": email,
        "authExternalAccessToken": accessToken ?? "",
    ] as [String : Any]
}

Answer 2

您正在重新声明您的参数变量，而不是分配给它。

您只能一次分配一个let变量，但该赋值不必作为与声明相同的语句的一部分发生。

例如：

let parameters: [String: Any]

if (password != nil) {
    parameters = [
        "displayName": firstName + " " + lastName,
        "firstName": firstName,
        "lastName": lastName,
        "password": password ?? "",
        "passwordConfirmation": password ?? "",
        "location": location?.json ?? [:],
        "wallet": wallet?.json ?? [:],
        "gender": gender.rawValue,
        "avatarId": 1,
        "email": email,
        "authExternalAccessToken": accessToken ?? "",
    ]
} else {
    parameters = [
        "displayName": firstName + " " + lastName,
        "firstName": firstName,
        "lastName": lastName,
        "password": password ?? "",
        "passwordConfirmation": password ?? "",
        "location": location?.json ?? [:],
        "wallet": wallet?.json ?? [:],
        "gender": gender.rawValue,
        "avatarId": 1,
        "email": email,
        "authExternalAccessToken": accessToken ?? "",
    ]
}

Alamofire.request(url, method: .post, parameters: parameters, encoding: JSONEncoding.default, headers: [

基于价值的Alamofire参数

2 个答案: