我正在尝试使用SwiftyJSON循环遍历JSON值,以便在UIAlertController中显示它们。
在使用Alamofire的API调用中,我使用
返回一些JSON数据if((responseData.result.value) != nil) {
let json = JSON(responseData.result.value!)
let token = json["api_token"].string
response(token: token, errorVal: json)
} else {
return
}
然后在我的VC中,我将这些数据用于:
if let errorVal = errorVal {
var errorMessages = ""
for (_,subJson):(String, JSON) in errorVal {
errorMessages = errorMessages + String(subJson) + "\n"
}
}
errorVal 正在返回:
{
"email" : [
"The email field is required."
],
"password" : [
"The password field is required."
]
}
和 errorMessages
[
"The email field is required."
]
[
"The password field is required."
]
但我希望 errorMessages 显示此内容:
The email field is required
The password field is required
如何循环访问JSON并仅获取值?
答案 0 :(得分:1)
你可以使用这样的东西:
var newMessage = String(subJson).stringByReplacingOccurrencesOfString("[", withString: "", options: NSStringCompareOptions.LiteralSearch, range: nil)
newMessage = newMessage.stringByReplacingOccurrencesOfString("]", withString: "", options: NSStringCompareOptions.LiteralSearch, range: nil)
errorMessages = errorMessages + newMessage + "\n"
答案 1 :(得分:1)
由于subJson是一个字符串数组,所以得到第一个字符串。
if let errorVal = errorVal {
var errorMessages = ""
for (_,subJson):(String, JSON) in errorVal {
// Looks like subJson is an array, so grab the 1st element
let s = subJson[0].string
errorMessages = errorMessages + s + "\n"
}
}