gpt4 book ai didi

swift - 优点和缺点列表 Swift

转载 作者:行者123 更新时间:2023-11-28 06:55:39 26 4
gpt4 key购买 nike

我正在尝试使用表格 View 快速制作一个优缺点列表。我得到了第一个列表,但是当我添加第二个时,它只是复制了第一个。

import UIKit

class prosConsViewController: UIViewController
{

@IBOutlet var tableViewOutlet: UITableView!

var colleges : [NetCollege] = []


@IBOutlet var consTableView: UITableView!
var collegesTwo : [NetCollegeTwo] = []


override func viewDidLoad()
{
super.viewDidLoad()
editButtonItem().tag = 0



}



@IBAction func onTappedPlusButton(sender: UIBarButtonItem)
{

var alert = UIAlertController(title: "Add Pro", message: nil, preferredStyle: .Alert)
alert.addTextFieldWithConfigurationHandler
{ (textField) -> Void in
textField.placeholder = "Add Pro Here"
}
var cancelAction = UIAlertAction(title: "Cancel", style: UIAlertActionStyle.Cancel, handler: nil)
alert.addAction(cancelAction)


var addAction = UIAlertAction(title: "Add", style: .Default) { (action) -> Void in
var addCollegesTextField = alert.textFields?[0] as! UITextField

var netCollege = NetCollege(name: addCollegesTextField.text)


self.colleges.append(netCollege)
self.tableViewOutlet.reloadData()
}

alert.addAction(addAction)
self.presentViewController(alert, animated: true, completion: nil)

}



func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell!
{
let cell = tableViewOutlet.dequeueReusableCellWithIdentifier("cellID") as! tableViewCell
//the line under maybe?
var college = colleges[indexPath.row]

cell.textLabel?.text = college.name


return cell
}

func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int
{
return colleges.count
}
func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath)
{
if editingStyle == UITableViewCellEditingStyle.Delete
{
colleges.removeAtIndex(indexPath.row)
tableView.reloadData()

}
}



func tableView(tableView: UITableView, canMoveRowAtIndexPath indexPath: NSIndexPath) -> Bool
{
return true
}

func tableView(tableView: UITableView, moveRowAtIndexPath sourceIndexPath: NSIndexPath, toIndexPath destinationIndexPath: NSIndexPath)
{
var collegeList = colleges[sourceIndexPath.row]
colleges.removeAtIndex(sourceIndexPath.row)
colleges.insert(collegeList, atIndex: destinationIndexPath.row)


}

缺点列表从这里开始

@IBAction func plusButtonTwo(sender: UIBarButtonItem)
{
var alertTwo = UIAlertController(title: "Add Con", message: nil, preferredStyle: .Alert)
alertTwo.addTextFieldWithConfigurationHandler
{ (textField) -> Void in
textField.placeholder = "Add Con Here"
}
var cancelActionTwo = UIAlertAction(title: "Cancel", style: UIAlertActionStyle.Cancel, handler: nil)
alertTwo.addAction(cancelActionTwo)


var addActionTwo = UIAlertAction(title: "Add", style: .Default) { (action) -> Void in
var addCollegesTextFieldTwo = alertTwo.textFields?[0] as! UITextField

var netCollegeTwo = NetCollegeTwo(nameTwo: addCollegesTextFieldTwo.text)


self.collegesTwo.append(netCollegeTwo)
self.consTableView.reloadData()
}

alertTwo.addAction(addActionTwo)
self.presentViewController(alertTwo, animated: true, completion: nil)

}



func consTableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell!
{
let cellTwo = consTableView.dequeueReusableCellWithIdentifier("IDCell") as! tableViewCell
var collegeTwo = collegesTwo[indexPath.row]

cellTwo.textLabel?.text = collegeTwo.conName


return cellTwo
}

func consTableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int
{
return collegesTwo.count
}

func consTableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath)
{
if editingStyle == UITableViewCellEditingStyle.Delete
{
collegesTwo.removeAtIndex(indexPath.row)
consTableView.reloadData()

}
}

func consTableView(tableView: UITableView, canMoveRowAtIndexPath indexPath: NSIndexPath) -> Bool
{
return true
}

func consTableView(tableView: UITableView, moveRowAtIndexPath sourceIndexPath: NSIndexPath, toIndexPath destinationIndexPath: NSIndexPath)
{
var collegeListTwo = collegesTwo[sourceIndexPath.row]
collegesTwo.removeAtIndex(sourceIndexPath.row)
collegesTwo.insert(collegeListTwo, atIndex: destinationIndexPath.row)


}



}

最佳答案

您不能只是将 UITableViewDelegate/UITableViewDataSource 方法的签名从 tableView:cellForRowAtIndexPath: 更改为 consTableView:cellForRowAtIndexPath: 并期望它能工作。两个表都将调用 tableView:cellForRowAtIndexPath: 并显示相同的结果。

如果您希望同一个对象成为两个表的委托(delegate)和数据源,您需要为两个表创建一个 IBOutlet 并放置一个 if 在您的委托(delegate)和数据源方法实现中声明以根据调用该方法的 TableView 提供不同的行为。

例如:

class prosConsViewController: UIViewController {
@IBOutlet var prosTableViewOutlet: UITableView!
@IBOutlet var consTableViewOutlet: UITableView!

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell! {
if tableView == prosTableViewOutlet {
// Pros logic
}
else {
// Cons logic
}
}
}

关于swift - 优点和缺点列表 Swift,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/33742149/

26 4 0
Copyright 2021 - 2024 cfsdn All Rights Reserved 蜀ICP备2022000587号
广告合作:1813099741@qq.com 6ren.com