在Swift中从Eureka Forms获取值 [英] Get values from Eureka Forms in Swift

问题描述

我是Swift中的新编程人员，正在尝试使用Eureka库创建表单.

I'm new programming in Swift and I'm trying to create a form using Eureka Library.

该表格已经可以使用，但是我无法从该表格中获取数据.

The form is already working but I can't get the data out of the form.

我正试图将数据一次存储到一个全局变量中，以便在按下按钮时将其打印出来.

I'm trying to get the data one by one store it into a global variable in order to be printed when the button is pressed.

问题是代码总是在中断，我不知道如何纠正它.

The thing is the code is always breaking and I don't know how to correct it.

这是我的代码:

import UIKit
import Eureka

class ViewController: FormViewController
{
    //Creating Global Variables
    var name: String = ""
    var data: Date? = nil

    @IBAction func testebutton(_ sender: Any)
    {
        print(name)
        print(data)
    }

    override func viewDidLoad()
    {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.

        form +++ Section()
            <<< TextRow()
                {
                    row in
                row.title = "Name"
                row.tag = "name"
            }
            <<< DateRow()
                {
                $0.title = "Birthdate"
                $0.value = Date()
                $0.tag = "date"
                }

        //Gets value from form
        let row: TextRow? = form.rowBy(tag: "name")
        let nome = row?.value

        name = nome!

    }

感谢您的时间

推荐答案

一旦DateRow或TextRow更改，则需要使用.onChange更新值，或者可以直接使用form.rowBy(tag: "tagName")访问该值并将其转换为您可以使用您的基本代码在此示例代码中访问.value的正确行类型，我同时使用两种方法

You need to use the .onChange to update your values once DateRow or TextRow changes, or you can access directly to the value with form.rowBy(tag: "tagName") and casting to the correct type of row you can access to .value in this example code using your base code I use both approaches

import UIKit
import Eureka

class GettingDataViewController: FormViewController {

    //Creating Global Variables
    var name: String = ""
    var data: Date? = nil

    @IBAction func testebutton(_ sender: Any)
    {
        print(name)
        print(data)
    }

    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
        form +++ Section()
            <<< TextRow()
                {
                    row in
                    row.title = "Name"
                    row.tag = "name"
                }.onChange({ (row) in
                    self.name = row.value != nil ? row.value! : "" //updating the value on change
                })
            <<< DateRow()
                {
                    $0.title = "Birthdate"
                    $0.value = Date()
                    $0.tag = "date"
                }.onChange({ (row) in
                    self.data = row.value  //updating the value on change
                })
            <<< ButtonRow(tag: "test").onCellSelection({ (cell, row) in
                print(self.name)
                print(self.data)

                //Direct access to value
                if let textRow = self.form.rowBy(tag: "name") as? TextRow
                {
                    print(textRow.value)
                }

                if let dateRow = self.form.rowBy(tag: "date") as? DateRow
                {
                    print(dateRow.value)
                }

            })

    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

}

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