【发布时间】：2017-07-18 19:05:50
【问题描述】：
【问题讨论】：
标签： json swift core-data swift3
【发布时间】：2017-07-18 19:05:50
【问题描述】：
从 iOS 11 和 Xcode 9 开始，Core Data 支持 URI 数据类型，该数据类型适用于存储图像 URL，例如 JSON 中的 profimg 字段。您也可以使用 Core Data 的字符串类型，无论是为了方便还是如果您支持 iOS 10。UID 字段是一个整数，因此请选择 Core Data 的整数类型中的任何一个大到足以容纳最大值。如果您对最大 UID 有疑问，您可以放心地使用 Core Data 的“Integer 64”类型。
像任何其他核心数据属性一样保存和获取。
【讨论】：
-
嗨汤姆，请看第二个答案，我已经完成了这样的问题。但问题是当我获取数据并在表格视图中显示时，如果没有互联网连接，应用程序崩溃
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这与这个问题完全不同。您应该发布一个新问题，其中包含有关您如何使用网络连接以及应用崩溃时究竟发生了什么（错误消息等）的信息。
func clearData() {
let delegate = UIApplication.shared.delegate as? AppDelegate
if let context = delegate?.persistentContainer.viewContext{
do {
let fetchRequest = NSFetchRequest<NSFetchRequestResult>(entityName: "Mydata")
let objects = try(context.fetch(fetchRequest)) as? [NSManagedObject]
for object in objects! {
context.delete(object)
}
try(context.save())
} catch let err {
print(err)
}
}
}
func setupData() {
clearData()
let urlWithParams = "https://www.zdoof.com/api/zTimeline/ztimeline_bind?Created_by=4490&Created_on=01/jan/2017&Updated_on=14/june/2017&PageIndex=1&PageSize=50"
Alamofire.request(urlWithParams, method: .get, parameters: nil, encoding: JSONEncoding.default, headers: nil).responseJSON { response in
switch(response.result) {
case .success(_):
if let data = response.result.value as? NSArray{
self.myHelp = [myHelperClass]()
for allData in data {
let help = myHelperClass()
let jsonID = (allData as! NSDictionary).value(forKey: "UID") as! NSInteger
help.myId = String.init(describing: jsonID)
help.myName = ((allData as! NSDictionary).value(forKey: "Name") as! NSString) as String
self.myNameArray.append(help.myName)
// person.setValue(myName, forKey: "name")
DispatchQueue.main.async(execute: { () -> Void in
let myUrlString = "https://www.zdoof.com//"
let myprofileImage = (allData as! NSDictionary).value(forKey: "profimg") as! NSString
help.myStringImageArray = myUrlString + (myprofileImage as String)
let midImage = ((allData as! NSDictionary).value(forKey: "mid_img") as! NSString) as String
help.myStringPostImageArray = myUrlString + (midImage as String)
})
help.Yumms = ((allData as AnyObject).value(forKey: "Postlike") as! NSString) as String
let kUserDefault = UserDefaults.standard
// person.setValue(Yumms, forKeyPath: "postlike")
let myId = (allData as AnyObject).value(forKey: "UID") as!NSInteger
help.myidString = String.init(describing: myId)
// person.setValue(myidString, forKey: "uID")
help.Rebcol = ((allData as AnyObject).value(forKey: "Rebcol") as! NSString) as String
// person.setValue(Rebcol, forKey: "rebcol")
help.UTYPIMG = ((allData as AnyObject).value(forKey: "UTYPIMG") as! NSString) as String
// person.setValue(UTYPIMG, forKey: "uTYPIMG")
help.Created_on = ((allData as AnyObject).value(forKey: "Created_on") as! NSString) as String
// person.setValue(Created_on, forKey: "created_on")
help.UTYP = ((allData as AnyObject).value(forKey: "UTYP") as! NSString) as String
// person.setValue(UTYP, forKey: "uTYP")
help.comments = ((allData as AnyObject).value(forKey: "Postcomment") as! NSString) as String
// person.setValue(comments, forKeyPath: "postcomment")
help.Details = ((allData as AnyObject).value(forKey: "Details") as! NSString) as String
// person.setValue(Details, forKeyPath: "details")
help.myPost = ((allData as AnyObject).value(forKey: "Share") as! NSString) as String
// person.setValue(myPost, forKeyPath: "share")
help.myDate = ((allData as AnyObject).value(forKey: "zDate") as! NSString) as String
// person.setValue(myDate, forKeyPath: "zDate")
let myPTYPEInteger = (allData as AnyObject).value(forKey: "PTYPE") as!NSInteger
help.myPTYPE = String.init(describing: myPTYPEInteger)
let myIdInteger = (allData as AnyObject).value(forKey: "ID") as!NSInteger
help.myId = String.init(describing: myIdInteger)
self.myFunction(nameFunc: help.myName, yummFunc: help.Yumms, myIdFunc: help.myidString, RebcolFunc: help.Rebcol, UTYPIMGFunc: help.UTYPIMG, Created_onFunc: help.Created_on, UTYPFunc: help.UTYP, commentsFunc: help.comments, DetailsFunc: help.Details, myPostFunc: help.myPost, myDate: help.myDate ,imageArray: help.myStringImageArray , postImageArray: help.myStringPostImageArray , myUId: help.myId , myPpTypeFunc: help.myPTYPE , myIId: help.myId )
kUserDefault.set(self.ID, forKey: "ID")
kUserDefault.set(self.PTYPE, forKey: "PTYPE")
kUserDefault.set(self.UID, forKey: "UID")
kUserDefault.synchronize()
}
}
DispatchQueue.main.async(execute: { () -> Void in
self.myTable.reloadData()
})
break
case .failure(_):
print(response.result.error!)
break
}
}
}
func myFunction(nameFunc: String , yummFunc : String , myIdFunc : String , RebcolFunc: String , UTYPIMGFunc : String , Created_onFunc : String, UTYPFunc: String , commentsFunc : String , DetailsFunc : String ,myPostFunc : String , myDate : String ,imageArray : String , postImageArray : String , myUId : String , myPpTypeFunc : String , myIId : String )
{
let delegate = UIApplication.shared.delegate as? AppDelegate
if let context = delegate?.persistentContainer.viewContext{
let person = NSEntityDescription.insertNewObject(forEntityName: "Mydata", into: context) as! Mydata
person.setValue(nameFunc, forKey: "name")
person.setValue(yummFunc, forKeyPath: "postlike")
person.setValue(myIdFunc, forKey: "uID")
person.setValue(RebcolFunc, forKey: "rebcol")
person.setValue(UTYPFunc, forKey: "uTYPIMG")
person.setValue(Created_onFunc, forKey: "created_on")
person.setValue(UTYPFunc, forKey: "uTYP")
person.setValue(commentsFunc, forKeyPath: "postcomment")
person.setValue(DetailsFunc, forKeyPath: "details")
person.setValue(myPostFunc, forKeyPath: "share")
person.setValue(myDate, forKeyPath: "zDate")
person.setValue(imageArray, forKeyPath: "profimg")
person.setValue(postImageArray, forKeyPath: "mid_img")
person.setValue(myUId, forKey: "iD")
person.setValue(myPpTypeFunc, forKey: "pTYPE")
do {
try(context.save())
} catch let err {
print(err)
}
loadData()
}
}
函数加载数据（）{ 让委托 = UIApplication.shared.delegate 为？应用代理
if let context = delegate?.persistentContainer.viewContext {
let fetchRequest = NSFetchRequest<NSFetchRequestResult>(entityName: "Mydata")
do {
people = try(context.fetch(fetchRequest)) as? [Mydata]
} catch let err {
print(err)
}
}
}
我已经这样做了，但问题是当有互联网连接时，它正在工作。没有互联网应用程序崩溃
【讨论】：