[英]Extracting values from Json Data in Swift iOS9
I have the following JSon Data retrieved from the server and i want to extract the value name and store them in an array or dictionary as a model in my app. 我从服务器检索了以下JSon数据,我想提取值名称并将其作为模型存储在数组或字典中,作为我的应用程序。 The issue is that the value returned its self is in a form of another dictionary.
问题在于返回的自身值是另一种字典的形式。 How can i extract values of frequency,description and amount and update them to my tableview.
如何提取频率,描述和数量的值并将其更新到我的表视图中。 Below is my Json Data format that i get from the server request.
以下是我从服务器请求中获得的Json数据格式。 I am new to swift and the concept of dictionaries and Arrays is quiet confusing to me
我是新手,字典和数组的概念让我很困惑
{
"payment" = (
{
amount = 100;
currency = USD;
description = "Awesome Videos";
frequency = Day;
},
{
amount = 500;
currency = USD;
description = "Awesome Videos";
frequency = Week;
},
{
amount = 3000;
currency = USD;
description = "Awesome Videos";
frequency = Months;
}
);
} }
I want to store them locally in a dictionary or an array, and update them to my tableview. 我想将它们存储在本地的字典或数组中,然后将它们更新到我的tableview中。
Here also is my code to fetch the data from server 这也是我从服务器获取数据的代码
let task = NSURLSession.sharedSession().dataTaskWithRequest(request) { (data, response, error) -> Void in
if (data != nil){
print(data)
do {
// let jsonResult = try NSJSONSerialization.JSONObjectWithData(data!, options:NSJSONReadingOptions.MutableContainers)
let jsonResult = try NSJSONSerialization.JSONObjectWithData(data!, options: NSJSONReadingOptions.MutableContainers)
print(jsonResult)
print(jsonResult["payment_plans"])
if let plan_list = jsonResult as? NSDictionary{
print("got dictionary")
for (key, value) in plan_list
{
print(value)
print("printing keys")
print(key)
if let plans = value as? NSDictionary
{
print("printing values")
print(plans)
print(plans["currency"])
}
}
}
} catch{
print("Json Serialization failed")
}
}
}
/*
if (response != nil){
print(response)
}
else{
print(error)
}
}
*/
task.resume()
}
I am stuck here how to extract the values that i get in the dictionary. 我被困在这里,如何提取我在字典中得到的值。 Thanks in advance
提前致谢
Hi You can iterrate your result as following: 嗨,您可以按照以下步骤迭代结果:
if((jsonResult) != nil) {
let swiftyJsonVar = jsonResult!
do {
if let dicObj = swiftyJsonVar as? NSDictionary {
print("Response is dictionary")
print(dicObj)
let arrObj = dicObj["payment"] as NSArray
// Then iterate your arrObj and do as per your need.
//for eg.
arrObj[0]["description"]
}
}
}
Dictionary it's a key-value
storage where value in your case have AnyObject type. 字典是
key-value
存储,其中您的值具有AnyObject类型。
To convert data into Dictionary
or Array
you can use 要将数据转换为
Dictionary
或Array
,可以使用
let jsonResult = try JSONSerialization.jsonObject(with: data, options: .mutableContainers)
then create payments array 然后创建付款数组
if let payments = jsonResult as? Array{
*iterate here all payments
}
If you want to use for (key, value) in plan_list
you need to change it's to for (key, value) in plan_list.enumerate()
如果要
for (key, value) in plan_list
需要for (key, value) in plan_list.enumerate()
其更改为for (key, value) in plan_list.enumerate()
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