Question

我在UITableview中使用动态单元格，并尝试创建一个完成按钮，该按钮将在UITableViewCell 中显示数字键盘。

我有一个代码可以在ViewController中为其他字段完成此操作，但是当UITableViewCell中的字段时，这不起作用。

IBOulet在这里：

class StartingTankUsageCell: UITableViewCell, UITextFieldDelegate
{

    @IBOutlet var startingPressureTextField: UITextField!

我在ViewController中设置了：

import UIKit

class DiveDetailsViewController: UITableViewController, LocationDelegate, ItemDataSelectedProtocol
{

override func viewDidLoad()
{
    super.viewDidLoad()
    self.addDoneButtonOnKeyboardStartingPressure()
}

// DONE button on NumberPad for StartingPressure
func addDoneButtonOnKeyboardStartingPressure()
{
    let doneToolbar: UIToolbar = UIToolbar(frame: CGRectMake(0, 0, 320, 50))
    doneToolbar.barStyle = UIBarStyle.Default

    let flexSpace = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.FlexibleSpace, target: nil, action: nil)
    let done: UIBarButtonItem = UIBarButtonItem(title: "Done", style: UIBarButtonItemStyle.Done, target: self, action: #selector(DiveDetailsViewController.addDoneButtonOnKeyboardStartingPressure))

    var items = [UIBarButtonItem]()
    items.append(flexSpace)
    items.append(done)

    doneToolbar.items = items
    doneToolbar.sizeToFit()

    self.startingPressureTextField.inputAccessoryView = doneToolbar
}

func doneButtonActionDuration()
{
    self.startingPressureTextField.resignFirstResponder()
} // finish DONE button on NumberPad for StartingPressure

我得到的错误是"Value to type 'DiveDetailsViewController' has no member 'startingPressureTextField'"

有人可以请帮助我允许vc在UITableViewCell中查看UITextField，或者帮助我使用可以驻留在UITableViewCell中的完成按钮。

Answer 1

您可以像这样为UITextField制作扩展名：

extension UITextField {

    public override func awakeFromNib() {
        super.awakeFromNib()
        self.addHideinputAccessoryView()
    }

    func addHideinputAccessoryView() {

        let button = UIButton(frame: CGRect(x: 0,y: 0,width: 50,height: 44))
        button.setTitle("Done", forState: .Normal)
        button.setTitleColor(UIColor.blueColor(), forState: .Normal)
        button.setTitleColor(UIColor.lightGrayColor(), forState: .Highlighted)
        button.titleLabel?.font = UIFont.systemFontOfSize(14)
        button.addTarget(self, action: #selector(self.resignFirstResponder), forControlEvents: .TouchUpInside)


        let barButton = UIBarButtonItem(customView: button)
        let space = UIBarButtonItem(barButtonSystemItem: .FlexibleSpace, target: self, action: nil)
        let toolbar = UIToolbar(frame: CGRectMake(0, 0, self.frame.size.width, 44))

        toolbar.items = [space, barButton]
        self.inputAccessoryView = toolbar
    }

}

Answer 2

你也可以这样试试，简化一下代码：

import UIKit
import Foundation

extension UITextField {

    func addHideinputAccessoryView() {

        let toolbar = UIToolbar()
        toolbar.sizeToFit()
        let item = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.Done,
                                   target: self, action: #selector(self.resignFirstResponder))
        toolbar.setItems([item], animated: true)

        self.inputAccessoryView = toolbar
    }

}

将完成按钮添加到UITableViewCell中的数字键盘

2 个答案: