我是 iOS 编程新手,有一个关于 JSON 解析的小问题。
"data": [
{
"merchantId": "56",
"timings": [
[
"11:00 AM",
"11:00 PM"
]
],
"tags": [
"dine,north chinese"
],
"offers": [
{
"approvedBy": "56",
"locationId": "56",
"description": "Get 15% Off",
"finePrint": "• Cannot be combined with other offers.",
"audience": "all",
"status": "live",
"createdAt": "2016",
"updatedAt": "2016",
"offerType": "Discount",
"discount": "15",
"maxDiscount": 0,
"id": "56"
},
{
"approvedBy": "56023",
"locationId": "56023",
"description": "Get 25% Off",
"finePrint": "• Cannot be combined with other offers",
"audience": "all",
"status": "live",
"createdAt": "2016",
"updatedAt": "2016",
"hangoutId": "",
"offerType": "PercentDiscount",
"discount": "25",
"amount": 0,
"maxDiscount": 0,
"id": "5623"
},
};
我想下载上面的JSON数据,解析它并将其显示在标签中。 我可以使用以下代码下载并显示merchantId:
let JSONRespone = response.result.value as? [String:AnyObject]
if JSONRespone != nil {
let datarray = JSONRespone!["data"] as? [[String:AnyObject]]
if datarray != nil {
for data in datarray! {
let anObject = SomeObject()
let merchantId = data["merchantId"] as? String
if merchantId != nil {
anObject.merchantidentity = merchantId!
}
如果我对计时和标签使用相同的代码,它不会显示任何内容。当我尝试在控制台中显示结果时,它显示“nil”。
除此之外,我如何在三个不同的标签中打印“优惠”中的“描述”。我只能打印其中的一张。 有人可以帮我显示以下内容吗?提前致谢。
最佳答案
注意,offers是一个offers数组,数组中的每一项都是一个字典,所以你最好创建一个新的对象“class”Offer,其属性代表offers数组中每个字典中的每个键
所以你的 SomeObject 类应该看起来像这样
class SomeObject {
var name: String!
var imageURLString: String!
var address: String!
var area: String!
var awardedLoyalty: Int!
var cashbackPercentage: Double!
var city: String!
var contactNumber: String!
var createdAt: String!
var distanceFromUser: Double!
var id: String!
var isDiscounted: Bool!
var isFavorite: Bool!
var latitude: Double!
var logo: String!
var longitude: Double!
var merchantId: String!
var offers: [Offer]! // this is an array of offers, each offer in the array is of type (Offer()), which you must create your self, check Offer.swift file, it's a class Offer
var tags: [String]!
var timings: [String]!
var updatedAt: String!
}
而SomeObject.offers是Offer数组
所以你的 Offer 对象“类”应该类似于
class Offer {
var amount: Double!
var approvedBy: String!
var audience: String!
var createdAt: String!
var description: String!
var discount: Double!
var finePrint: String!
var hangoutId: String!
var id: String!
var locationId: String!
var maxDiscount: Double!
var offerType: String!
var status: String!
var updatedAt: String!
}
还要注意标签是一个字符串数组,每个字符串都是一些用“,”分隔的标签 后端开发人员应该将其设置为每个标签的单独字符串数组
但是,这里我添加了完成代码解析部分的代码
{
for data in dataArray! {
let anObject = SomeObject()
let name = data["name"] as? String
if name != nil {
anObject.name = name!
print("anObject.name \(name!)")
}
let heroImage = data["heroImage"] as? String
if heroImage != nil {
anObject.imageURLString = heroImage!
print("anObject.imageURLString \(heroImage!)")
}
let address = data["address"] as? String
if address != nil {
anObject.address = address!
print("anObject.address \(address!)")
}
let area = data["area"] as? String
if area != nil {
anObject.area = area!
print("anObject.area \(area!)")
}
let city = data["city"] as? String
if city != nil {
anObject.city = city!
print("anObject.city \(city!)")
}
let contactNumber = data["contactNumber"] as? String
if contactNumber != nil {
anObject.contactNumber = contactNumber!
print("anObject.contactNumber \(contactNumber!)")
}
let createdAt = data["createdAt"] as? String
if createdAt != nil {
anObject.createdAt = createdAt!
print("anObject.createdAt \(createdAt!)")
}
let distanceFromUser = data["distanceFromUser"] as? Double
if distanceFromUser != nil {
anObject.distanceFromUser = distanceFromUser!
print("anObject.distanceFromUser \(distanceFromUser!)")
}
let id = data["id"] as? String
if id != nil {
anObject.id = id!
print("anObject.id \(id!)")
}
let isDiscounted = data["isDiscounted"] as? Int
if isDiscounted != nil {
if isDiscounted! == 0 {
anObject.isDiscounted = false
}
else if isDiscounted == 1 {
anObject.isDiscounted = true
}
print("anObject.isDiscounted \(anObject.isDiscounted)")
}
let isFavorite = data["isFavorite"] as? Int
if isFavorite != nil {
if isFavorite! == 0 {
anObject.isFavorite = false
}
else if isFavorite == 1 {
anObject.isFavorite = true
}
print("anObject.isFavorite \(anObject.isFavorite)")
}
let latitude = data["latitude"] as? Double
if latitude != nil {
anObject.latitude = latitude!
print("anObject.latitude \(latitude!)")
}
let longitude = data["longitude"] as? Double
if longitude != nil {
anObject.longitude = longitude!
print("anObject.longitude \(longitude!)")
}
let merchantId = data["merchantId"] as? String
if merchantId != nil {
anObject.merchantId = merchantId!
print("anObject.merchantId \(merchantId!)")
}
let logo = data["logo"] as? String
if logo != nil {
anObject.logo = logo!
print("anObject.logo \(logo!)")
}
let awardedLoyalty = data["awardedLoyalty"] as? Int
if awardedLoyalty != nil {
anObject.awardedLoyalty = awardedLoyalty!
print(" anObject.awardedLoyalty \(awardedLoyalty!)")
}
let cashbackPercentage = data["cashbackPercentage"] as? Double
if cashbackPercentage != nil {
anObject.cashbackPercentage = cashbackPercentage!
print("anObject.cashbackPercentage \(cashbackPercentage!)")
}
let offers = data["offers"] as? [[String:AnyObject]]
if offers != nil {
var offersArray: [Offer] = []
for anOffer in offers! {
// note that offers is an array of offers, each item in the array is a dictionary, so you better create a new object Offer, with properties that represent each key in each dictionary in offers array
let offer = Offer()
let amount = anOffer["amount"] as? Double
if amount != nil {
offer.amount = amount!
print("offer.amount \(amount!)")
}
let approvedBy = anOffer["approvedBy"] as? String
if approvedBy != nil {
offer.approvedBy = approvedBy!
print("offer.approvedBy \(approvedBy!)")
}
let audience = anOffer["audience"] as? String
if audience != nil {
offer.audience = audience!
print("offer.audience \(audience!)")
}
let createdAt = anOffer["createdAt"] as? String
if createdAt != nil {
offer.createdAt = createdAt!
print("offer.createdAt \(createdAt!)")
}
let description = anOffer["description"] as? String
if description != nil {
offer.description = description!
print("offer.description \(description!)")
}
let discount = anOffer["discount"] as? Double
if discount != nil {
offer.discount = discount!
print("offer.discount \(discount!)")
}
let finePrint = anOffer["finePrint"] as? String
if finePrint != nil {
offer.finePrint = finePrint!
print("offer.finePrint \(finePrint!)")
}
let hangoutId = anOffer["hangoutId"] as? String
if hangoutId != nil {
offer.hangoutId = hangoutId!
print("offer.hangoutId \(hangoutId!)")
}
let id = anOffer["id"] as? String
if id != nil {
offer.id = id!
print("offer.id \(id!)")
}
let locationId = anOffer["locationId"] as? String
if locationId != nil {
offer.locationId = locationId!
print("offer.locationId \(locationId!)")
}
let maxDiscount = anOffer["maxDiscount"] as? Double
if maxDiscount != nil {
offer.maxDiscount = maxDiscount!
print("offer.maxDiscount \(maxDiscount!)")
}
let offerType = anOffer["offerType"] as? String
if offerType != nil {
offer.offerType = offerType!
print("offer.offerType \(offerType!)")
}
let status = anOffer["status"] as? String
if status != nil {
offer.status = status!
print("offer.status \(status!)")
}
let updatedAt = anOffer["updatedAt"] as? String
if updatedAt != nil {
offer.updatedAt = updatedAt!
print("offer.updatedAt \(updatedAt!)")
}
offersArray.append(offer)
}
anObject.offers = offersArray
}
let tags = data["tags"] as? [String]
for tag in tags! {
//note the tags array of strings, each string is some tags separated by ","
//backend developer should make it an array of separate string for each tag
let tagsArray = tag.componentsSeparatedByString(",")
anObject.tags = tagsArray
print("tagsArray \(tagsArray)")
}
let timings = data["timings"] as? [[String]]
if timings != nil {
for timingsArray in timings! {
var aTimingArray: [String] = []
for timing in timingsArray {
aTimingArray.append(timing)
print("timing \(timing)")
}
anObject.timings = aTimingArray
}
}
let updatedAt = data["updatedAt"] as? String
if updatedAt != nil {
anObject.updatedAt = updatedAt!
print("anObject.updatedAt \(updatedAt!)")
}
关于ios - Swift:有关 JSON 解析的帮助,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/38533165/