Tableview 行没有在 swift 中显示带有附加值的顺序
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【中文标题】Tableview 行没有在 swift 中显示带有附加值的顺序【英文标题】：Tableview rows are not showing inorder with added values in swift 【发布时间】：2020-06-25 06:59:37 【问题描述】：我在配置文件视图控制器中收到 JSON 响应。最初 JSON 包含一个我需要在 tableview 中显示的地址，然后我将新地址从 thirdviewcontroller 添加到第一个 viewcontroller JSON...
现在我需要在配置文件视图控制器 INORDER 中更新初始地址和所有添加的新地址.. 怎么样？
如果我在 profileviewcontroller 中添加如下内容，则 tableview 未按地址顺序显示：这里初始地址下降，添加的新地址也分散......我需要初始地址索引 0 和新地址位于索引 1...
class ProfileViewController: UIViewController, MyCellDelegate
@IBOutlet var addressTableview: UITableView!
var userModel : ProfileModel?
override func viewWillAppear(_ animated: Bool)
self.navigationController?.navigationBar.isHidden=true
DispatchQueue.main.async
self.getUserProfile()
func getUserProfile()
let urlStr = urlComponents?.url
let request = NSMutableURLRequest(url: urlStr!, cachePolicy: .useProtocolCachePolicy,timeoutInterval: 10.0)
request.httpMethod = "POST"
let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: (data, response, error) -> Void in
if error == nil
let httpResponse = response as? HTTPURLResponse
if httpResponse!.statusCode == 200
do
let jsonObject = try JSONSerialization.jsonObject(with: data!, options: .mutableLeaves) as! [String :AnyObject]
self.userModel = ProfileModel.init(fromDictionary: jsonObject)
if (self.userModel?.userId) != nil
DispatchQueue.main.async
self.addressTableview.reloadData()
catch print(error.localizedDescription)
)
dataTask.resume()
extension ProfileViewController : UITableViewDelegate,UITableViewDataSource, CLLocationManagerDelegate
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int
return userModel?.userAddresses.count ?? 0
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
let cell: AddresCell = tableView.dequeueReusableCell(withIdentifier: "AddresCell", for: indexPath) as! AddresCell
let addr = userModel?.userAddresses![indexPath.row]
cell.name.text = addr?.type
cell.typeAddLabel.text = addr?.addressName
let street = addr?.streetName
let colony = addr?.colony
let city = addr?.city
let pincode = addr?.pincode
let locality: String = addr?.buildingName ?? ""
let dorNum: String = addr?.houseNo ?? ""
cell.address.text = street! + "," + colony! + "," + city! + "," + pincode! + "," + locality + "," + dorNum
return cell
我错在哪里，如何按顺序排列表格视图，请不要介意我卡在这里很久了
这是 ProfileModel 代码：
class ProfileModel : NSObject, NSCoding
var userId : String!
var userAddresses : [ProfileModelUserAddress]!
init(fromDictionary dictionary: [String:Any])
userId = dictionary["userId"] as? String
userAddresses = [ProfileModelUserAddress]()
if let userAddressesArray = dictionary["userAddresses"] as? [[String:Any]]
for dic in userAddressesArray
let value = ProfileModelUserAddress(fromDictionary: dic)
userAddresses.append(value)
func toDictionary() -> [String:Any]
var dictionary = [String:Any]()
if userId != nil
dictionary["userId"] = userId
if userAddresses != nil
var dictionaryElements = [[String:Any]]()
for userAddressesElement in userAddresses
dictionaryElements.append(userAddressesElement.toDictionary())
dictionary["userAddresses"] = dictionaryElements
return dictionary
@objc required init(coder aDecoder: NSCoder)
userId = aDecoder.decodeObject(forKey: "userId") as? String
userAddresses = aDecoder.decodeObject(forKey: "userAddresses") as? [ProfileModelUserAddress]
@objc func encode(with aCoder: NSCoder)
if userId != nil
aCoder.encode(userId, forKey: "userId")
if userAddresses != nil
aCoder.encode(userAddresses, forKey: "userAddresses")
ProfileModel 的var userAddresses : [ProfileModelUserAddress] 的代码：
class ProfileModelUserAddress : NSObject, NSCoding
var addressId : String!
var addressName : String!
var userId : String!
var pincode : String!
var city : String!
var streetName : String!
init(fromDictionary dictionary: [String:Any])
addressId = dictionary["addressId"] as? String
addressName = dictionary["addressName"] as? String
userId = dictionary["userId"] as? String
pincode = dictionary["pincode"] as? String
city = dictionary["city"] as? String
streetName = dictionary["streetName"] as? String
func toDictionary() -> [String:Any]
var dictionary = [String:Any]()
if addressId != nil
dictionary["addressId"] = addressId
if addressName != nil
dictionary["addressName"] = addressName
if userId != nil
dictionary["userId"] = userId
if pincode != nil
dictionary["pincode"] = pincode
if city != nil
dictionary["city"] = city
if streetName != nil
dictionary["streetName"] = streetName
return dictionary
@objc required init(coder aDecoder: NSCoder)
addressId = aDecoder.decodeObject(forKey: "addressId") as? String
addressName = aDecoder.decodeObject(forKey: "addressName") as? String
userId = aDecoder.decodeObject(forKey: "userId") as? String
pincode = aDecoder.decodeObject(forKey: "pincode") as? String
city = aDecoder.decodeObject(forKey: "city") as? String
streetName = aDecoder.decodeObject(forKey: "streetName") as? String
@objc func encode(with aCoder: NSCoder)
if addressId != nil
aCoder.encode(addressId, forKey: "addressId")
if addressName != nil
aCoder.encode(addressName, forKey: "addressName")
if userId != nil
aCoder.encode(userId, forKey: "userId")
if pincode != nil
aCoder.encode(pincode, forKey: "pincode")
if city != nil
aCoder.encode(city, forKey: "city")
if streetName != nil
aCoder.encode(streetName, forKey: "streetName")
我正在从这个 viewcontroller 向 profileviewcontroller tableview 添加新地址：
class NewZoomAddressViewController: UIViewController
func mapView(_ mapView: MKMapView, regionDidChangeAnimated animated: Bool)
let center = getCenterLocation(for: mapView)
let geoCoder = CLGeocoder()
guard let previousLocation = self.latestLocation else return
guard center.distance(from: previousLocation) > 50 else return
self.previousLocation = center
let userLocation :CLLocation = center as CLLocation
latitudeZoom = userLocation.coordinate.latitude
logitudeZoom = userLocation.coordinate.longitude
geoCoder.reverseGeocodeLocation(center) [weak self] (placemarks, error) in
guard let self = self else return
self.streetNumber = placemark.subThoroughfare ?? ""
self.streetName = placemark.thoroughfare ?? ""
self.localityName = placemark.locality ?? ""//locality
self.sublocalityName = placemark.subLocality ?? ""//locality
self.zipName = placemark.postalCode ?? ""//locality
@IBAction func popupSubmitBtn(_ sender: Any)
if addressTextfield != nil
self.saveaddAddressService()
func saveaddAddressService()
let parameters: [String: Any] = [
"pincode": zipName,
"city": localityName,
"streetName": sublocalityName,
"colony": "",
"location" : locations,
"addressName" : addressTextfield.text
]
do
let jsonObject = try JSONSerialization.jsonObject(with: data!, options: .mutableLeaves) as! [String: Any]
print("saved address json \(jsonObject)")
self.addAddrsID = jsonObject["addressId"] as! String
UserDefaults.standard.set(self.addAddrsID, forKey: "addAddress")
DispatchQueue.main.async
let viewController = self.storyboard?.instantiateViewController(withIdentifier: "ProfileViewController") as! ProfileViewController
self.navigationController?.pushViewController(viewController, animated: true)
catch print(error.localizedDescription)
else
)
dataTask.resume()
profileviewcontroller json 响应：所有地址的用户 ID 相同。但每个新地址都会有新地址 ID
addressId = 5ef48787f546e73ee823f032;
addressName = ban;
city = Bengaluru;
dateCreated = "25-06-2020 16:46:23";
dateModified = "25-06-2020 16:46:23";
pincode = 560001;
userId = 85dc157688d84aab9bbbab150cbc13da;
,
addressId = 5ef48828f546e73ee823f033;
addressName = chen;
dateCreated = "25-06-2020 16:49:04";
landMark = "";
pincode = 600095;
streetName = Maduravoyal;
userId = 85dc157688d84aab9bbbab150cbc13da;
,
addressId = 5ef46670f546e73ee823f020;
addressName = vizag;
city = Visakhapatnam;
colony = "";
dateCreated = "25-06-2020 14:25:12";
pincode = 530045;
userId = 85dc157688d84aab9bbbab150cbc13da;
,
addressId = 5ef4664af546e73ee823f01c;
【问题讨论】：
你能显示userModel。也许您可以在模型中添加另一个变量addedAt，并根据该变量对数组进行排序
这是您的第三个几乎相同的问题。如果没有更多信息，即使是这个问题也无法回答。 updateUserDetails() 是什么？型号是什么？您如何将新地址从 thirdviewcontroller 添加到第一个 ViewController？
@vadian.. 我已经用所有相关代码编辑了我的帖子.. updateUserDetails() 与 tableview 无关.. 请看一下
@Mat..我已经用所有 userModel 编辑了我的帖子。请看看并提供帮助
@vadian 任何建议.. 我错了
【参考方案1】：
在您的模型中为ProfileModelUserAddress 添加一个新变量来保存dateCreated：
class ProfileModelUserAddress : NSObject, NSCoding
// add this variable
var dateCreated : Date!
//.... your other variables
init(fromDictionary dictionary: [String:Any])
let formatter = DateFormatter()
formatter.dateFormat = "dd-MM-yyyy HH:mm:ss"
//convert your string to date
dateCreated = formatter.date(from: dictionary["dateCreated"] as! String)
//....the rest of your code
然后在你的ProfileViewController
class ProfileViewController: UIViewController, MyCellDelegate
var userModel : ProfileModel?
// added this array which will hold all your addresses
var addressModel = [ProfileModelUserAddress]()
func getUserProfile()
// if you call this fucntion again everytime you add
// a new address, call removeAll() in order to have an
//empty array, otherwise you will end up with double values.
self.addressModel.removeAll()
//.... rest of your code
let jsonObject = try JSONSerialization.jsonObject(with: data!, options: .mutableLeaves) as! [String :AnyObject]
self.userModel = ProfileModel.init(fromDictionary: jsonObject)
for address in userModel!.userAddresses!
addressModel.append(address)
self.addressModel.sort(by: $0.dateCreated!.compare($1.dateCreated!) == .orderedDescending)
//.....
//.... rest of your code
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
// rest of your code ....
// You can use your addresses array
let addr = self.addressModel[indexPath.row]
// rest of your code ....
我测试了它并且它有效：
func getUserProfile()
// All dictionaries have the same values except for the date
let address1 = ["addressId" : "5ef48828f546e73ee823f033", "addressName": "chen","dateCreated": "25-06-2020 16:49:04", "landMark": "", "pincode": "879327" ,"streetName": "Maduravoyal", "userId": "947384783749" ]
let address2 = ["addressId" : "5ef48828f546e73ee823f033", "addressName": "chen","dateCreated": "27-06-2020 16:49:04", "landMark": "", "pincode": "879327" ,"streetName": "Maduravoyal", "userId": "947384783749" ]
let address3 = ["addressId" : "5ef48828f546e73ee823f033", "addressName": "chen","dateCreated": "25-06-2020 19:49:04", "landMark": "", "pincode": "879327" ,"streetName": "Maduravoyal", "userId": "947384783749" ]
let address4 = ["addressId" : "5ef48828f546e73ee823f033", "addressName": "chen","dateCreated": "29-06-2020 19:49:04", "landMark": "", "pincode": "879327" ,"streetName": "Maduravoyal", "userId": "947384783749" ]
let addressObj = ProfileModelUserAddress.init(fromDictionary: address1)
let addressObj1 = ProfileModelUserAddress.init(fromDictionary: address2)
let addressObj2 = ProfileModelUserAddress.init(fromDictionary: address3)
let addressObj3 = ProfileModelUserAddress.init(fromDictionary: address4)
var addresseTry = [ProfileModelUserAddress]()
addresseTry.append(addressObj)
addresseTry.append(addressObj1)
addresseTry.append(addressObj2)
addresseTry.append(addressObj3)
for address in addresseTry
addressModel.append(address)
self.addressModel.sort(by: $0.dateCreated!.compare($1.dateCreated!) == .orderedDescending)
for addressForDate in self.addressModel
print(addressForDate.dateCreated)
哪个打印：
Optional(2020-06-29 16:49:04 +0000)
Optional(2020-06-27 13:49:04 +0000)
Optional(2020-06-25 16:49:04 +0000)
Optional(2020-06-25 13:49:04 +0000)
【讨论】：
谢谢，地址是按顺序添加的，但是如果我去 otherviewcontroller 并返回，那么相同的地址数组会在 tableview 中添加两次 添加新地址后是否再次调用getUserProfile？ @swiftios 检查更新的答案。如果在用户添加新地址后再次从服务器中提取数据，请使用self.addressModel.removeAll()。
是的，现在它可以工作了.. 除了 datesort 之外还有其他方法吗.. 我们可以对 addressId 进行排序吗？以上是关于Tableview 行没有在 swift 中显示带有附加值的顺序的主要内容，如果未能解决你的问题，请参考以下文章
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