我有如下所示的api。
{"data":[{"id":25,"question":"How are u?","options":["fine","Not fine","No"],"button_type":"2","option_count":"4"},{"id":26,"question":"How your name start with 'a' letter?","options":["Yes","No"],"button_type":"2","option_count":"2"}]}
这是我的api格式，因此我使用tableview编写了以下代码。
func numberOfSections(in tableView: UITableView) -> Int {
return questionViewModel.numberOfSections()
}
func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
let identifier = "HeaderCell"
var headercell: NH_questionheader! = tableView.dequeueReusableCell(withIdentifier: identifier) as? NH_questionheader
if headercell == nil {
tableView.register(UINib(nibName: "NH_questionheader", bundle: nil), forCellReuseIdentifier: identifier)
headercell = tableView.dequeueReusableCell(withIdentifier: identifier) as? NH_questionheader
}
headercell.setReviewData(reviews:questionViewModel.titleForHeaderInSection(atsection:section))
return headercell
}
func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
if tableView == tableview{
return 150
}
return 20
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if tableView == tableview{
return questionViewModel.numberOfRowsIn(section: section)
}
return 0
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let model = questionViewModel.titleForHeaderInSection(atsection: indexPath.section)
print(model.answerType)
print(model.answerType?.rawValue)
switch model.answerType {
case .NHAnswerRadioButton?:
if let cell = self.tableview.dequeueReusableCell(withIdentifier: NHRadioTypeCell.identifier) as? NHRadioTypeCell {
cell.setOptions(Options1:questionViewModel.datafordisplay(atindex: indexPath))
cell.delegate = self
return cell
}
case .NHAnswerCheckboxButton?:
if let cell = self.tableview.dequeueReusableCell(withIdentifier: NHCheckBoxTypeCell.identifier, for: indexPath) as? NHCheckBoxTypeCell {
cell.setOptions(Options1:questionViewModel.datafordisplay(atindex: indexPath)) // cell.item = item
return cell
}
case .NHAnswerSmileyButton?:
if let cell = self.tableview.dequeueReusableCell(withIdentifier: NHSmileyTypeCell.identifier) as? NHSmileyTypeCell{
cell.textLabel?.text = ""
return cell
}
case .NHAnswerStarRatingButton?:
if let cell = self.tableview.dequeueReusableCell(withIdentifier: NHStarRatingTypeCell.identifier) as? NHStarRatingTypeCell {
cell.textLabel?.text = ""
return cell
}
case .NHAnswerTextButton?:
if let cell = self.tableview.dequeueReusableCell(withIdentifier:NHTextTypeCell.identifier, for: indexPath) as? NHTextTypeCell{
cell.textLabel?.text = ""
return cell
}
default:
return UITableViewCell()
}
return UITableViewCell()
}
这是代码。我得到了输出。但是我需要其他的json.file
{
"data":[
{
"question": "Gender",
"options": ["Male","Female"],
"button_type":"2"
},
{
"question": "How old are you",
"options": ["Under 18","Age 18 to 24","Age 25 to 40","Age 41 to 60","Above 60"],
"button_type":"2"
},
{
"button_type":"2",
"question": "I am filling the Questionnaire for?",
"options": ["Myself","Mychild","Partner","Others"]
}
]
}
在NH_QuestionViewModel视图模型中：-
func loadData(completion :@escaping (_ isSucess:Bool) -> ()){
loadFromWebserviceData { (newDataSourceModel) in
if(newDataSourceModel != nil)
{
self.datasourceModel = newDataSourceModel!
completion(true)
}
else{
completion(false)
}
}
}
func loadFromWebserviceData(completion :@escaping (NH_QuestionDataSourceModel?) -> ()){
//with using Alamofire ..............
// http://localhost/json_data/vendorlist.php
Alamofire.request("http://www.example.com").validate(statusCode: 200..<300).validate(contentType: ["application/json"]).responseJSON{ response in
let status = response.response?.statusCode
print("STATUS \(status)")
print(response)
switch response.result{
case .success(let data):
print("success",data)
let result = response.result
print(result)
if let wholedata = result.value as? [String:Any]{
print(wholedata)
self.datasection1 = wholedata
if let data = wholedata["data"] as? Array<[String:Any]>{
print(data)
print(response)
for question in data {
let typebutton = question["button_type"] as? String
print(typebutton)
self.type = typebutton
let options = question["options"] as! [String]
// self.dataListArray1 = [options]
self.tableArray.append(options)
// self.savedataforoptions(completion: <#T##(NH_OptionslistDataSourceModel?) -> ()#>)
self.no = options.count
}
print(self.tableArray)
let newDataSource:NH_QuestionDataSourceModel = NH_QuestionDataSourceModel(array: data)
completion(newDataSource)
}
}
case .failure(let encodingError ):
print(encodingError)
// if response.response?.statusCode == 404{
print(encodingError.localizedDescription)
completion(nil)
}
}}
在viewcontroller中
init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: Bundle?, withViewModel viewModel:NH_QuestionViewModel,withDummyDataViewModel DummyDataviewModel:NH_DummyDataViewModel) {
super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
questionViewModel = viewModel
dummyDataViewModel = DummyDataviewModel
}
viewdidload：-
questionViewModel.loadData { (isSuccess) in
if(isSuccess == true)
{
let sec = self.questionViewModel.numberOfSections()
for _ in 0..<sec
{
self.questionViewModel.answers1.add("")
self.questionViewModel.questions1.add("")
self.questionViewModel.questionlist1.add("")
}
//questionViewModel.numberOfSections()
self.activityindicator.stopAnimating()
self.activityindicator.isHidden = true
self.tableview.refreshControl = refreshControl
self.tableview .allowsMultipleSelection = false
self.tableview.reloadData()
}
else{
self.activityindicator.stopAnimating()
self.activityindicator.isHidden = true
let controller = UIAlertController(title: "No Internet Detected", message: "This app requires an Internet connection", preferredStyle: .alert)
// Create the actions
let okAction = UIAlertAction(title: "OK", style: UIAlertActionStyle.default) {
UIAlertAction in
NSLog("OK Pressed")
self.viewDidLoad()
}
controller.addAction(okAction)
self.present(controller, animated: true, completion: nil)
}
在NHDummyViewModel中：-
func loadFromDummyData(completion :@escaping (NH_DummyDataSourceModel?) -> ()){
if let path = Bundle.main.path(forResource: "jsonData", ofType: "json") {
do {
let jsonData = try NSData(contentsOfFile: path, options: NSData.ReadingOptions.mappedIfSafe)
do {
let jsonResult: NSDictionary = try JSONSerialization.jsonObject(with: jsonData as Data, options: JSONSerialization.ReadingOptions.mutableContainers) as! NSDictionary
self.datasection2 = jsonResult as! [String : Any]
if let people = jsonResult["data"] as? Array<[String:Any]> {
// self.dict = people
for person in people {
let options = person["options"] as! [String]
self.tableArray.append(options)
let name = person ["question"] as! String
self.tableArray.append(options)
}
let newDataSource:NH_DummyDataSourceModel = NH_DummyDataSourceModel(array: people)
completion(newDataSource)
}
} catch {}
} catch {}
}
}
因此，如何组合两个数据源。在tableview的noofsection中应该编写什么代码？
所以这些数据也需要进入该表视图中。该怎么办？
这意味着在tableview中首先列出api中的数据，然后再列出Json.file中的数据。如何实现？
答案 0 :(得分：0)
为了使事情变得简单，您不需要申请独立的 类充当viewModel。最好将一个viewModel用于一个tableView。 一种方法是像下面这样扩展当前的webloadingModel：
c("foo", "bar")我不知道实现细节，为什么需要datasection2。但是，如果需要，可以使用类变量。然后，您只需在您的viewLoad中插入dummyViewModel方法，而无需更改其他任何内容。如果您需要添加更多功能，请从此处添加。尽量避免使逻辑过于复杂。
protocol NHDummyViewModel {
static var datasection2 : [String:Any]? {get set}
func loadFromDummyData(completion :@escaping (NH_DummyDataSourceModel?) -> ())
}
extension NH_QuestionViewModel : NHDummyViewModel{
static var datasection2 : [String:Any]?
func loadFromDummyData(completion :@escaping (NH_DummyDataSourceModel?) -> ()){
if let path = Bundle.main.path(forResource: "jsonData", ofType: "json") {
do {
let jsonData = try NSData(contentsOfFile: path, options: NSData.ReadingOptions.mappedIfSafe)
do {
let jsonResult: NSDictionary = try JSONSerialization.jsonObject(with: jsonData as Data, options: JSONSerialization.ReadingOptions.mutableContainers) as! NSDictionary
NH_QuestionViewModel.datasection2 = jsonResult as! [String : Any]
if let people = jsonResult["data"] as? Array<[String:Any]> {
// self.dict = people
for person in people {
let options = person["options"] as! [String]
self.tableArray.append(options)
let name = person ["question"] as! String
self.tableArray.append(options)
}
let newDataSource:NH_DummyDataSourceModel = NH_DummyDataSourceModel(array: people)
completion(newDataSource)
}
} catch {}
} catch {}
}
}
}