Question

我尝试实施选择器视图并将数据传递给选择器视图，但是在单击文本字段时遇到崩溃任何人都可以帮我解决此问题吗？

这是我点击文本字段后的崩溃报告

由于未捕获的异常而终止应用 'UIViewControllerHierarchyInconsistency'，原因：'子视图控制器：应该有父视图控制器：但请求的父级是：'

var countryArray = [Country]()
var shippingAddressEditData : CustomerShippingAddress?

在视图中加载了

countryPickerView.delegate = self
countryPickerView.dataSource = self
countryTextField.inputView = countryPickerView
countryListDownloadJsonwithURL(countryAPI: countryURL)

获得国家和州的Json功能

func countryListDownloadJsonwithURL(countryAPI: String) {
        let url = NSURL(string: countryAPI)
        URLSession.shared.dataTask(with: (url as URL?)!, completionHandler: {(data, response, error) -> Void in
            if let jsonObj = try? JSONSerialization.jsonObject(with: data!, options: .allowFragments) as? [[String:Any]] {
                for item in jsonObj! {
                    let dict = Country(dict: item)
                    self.countryArray.append(dict)
                }
                OperationQueue.main.addOperation({
                  self.countryPickerView.reloadAllComponents()
                })
            }
        }).resume()
    }

这是我的模型类数据

struct Country {

let country : String
let selected : Bool
let countryId : String
var state = [State]()

init(dict:[String:Any]) {
    self.country = (dict["country"] as? String)!
    self.selected = (dict["selected"] as? Bool)!
    self.countryId = (dict["country_id"] as? String)!
    if let customAttribute = dict["state"] as? [[String: AnyObject]] {
        var result = [State]()
        for obj in customAttribute {
            result.append(State(dict: obj))
        }
        self.state = result
    } else {
        self.state = [State]()
    }
  }   
 }

struct State {

let state : String
let stateValue : Int

init(dict: [String:Any]) {
    self.state = (dict["state"] as? String)!
    self.stateValue = (dict["state_value"] as? Int)!
   }
}


public func numberOfComponents(in pickerView: UIPickerView) -> Int{
    if pickerView == countryPickerView{
        return 1
    }else {
        return 1
    }
}

public func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int{
    if pickerView == countryPickerView {
        return countryArray.count
    }
    else {
        return countryArray[component].state.count
    }
}

func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
    if pickerView == countryPickerView {
        self.view.endEditing(true)
        return countryArray[row].country
    }
    else {
        self.view.endEditing(true)
        return countryArray[component].state[row].state
    }
}

func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
    if pickerView == countryPickerView {
        countryTextField.text = countryArray[row].country
        countryPickerView.isHidden = true
    }
    else {
        self.stateButton.setTitle(countryArray[component].state[row].state, for: .normal)
    }
}
func textFieldShouldBeginEditing(textField: UITextField) -> Bool {
    countryPickerView.isHidden = false
    return false
}

无法在swift 3中实现选择器视图？

0 个答案: