ios-轻按一下即可打开和关闭UITableViewCell复选标记

我正在做一个tableview

我希望能够点击每个单元格,并在点击时在单元格上显示一个选中标记

现在,我有一些代码可以完成这项工作:

// checkmarks when tapped

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
    let section = indexPath.section
    let numberOfRows = tableView.numberOfRowsInSection(section)
    for row in 0..<numberOfRows {
        if let cell = tableView.cellForRowAtIndexPath(NSIndexPath(forRow: row, inSection: section)) {
            cell.accessoryType = row == indexPath.row ? .Checkmark : .None
        }
    }
}

但是这段代码只选择一个部分中的1个单元格(我有5个部分)

我需要它来选择任何地方的任何单元格

另外,当我上下拖动屏幕时,我也会打勾

视图控制器

class ViewController: UIViewController, UITableViewDataSource {                        //class and subclass                  |)
//---------------------------------------------------------------------------------------------------------------------------/
    // Variable and constant, also IBAOutlet

    let section1 =
       ["this is used",
        "this is used to test",
        "this is used to test the lenght",
        "this is used to test the lenght of the text",
        "this is used to test the lenght of the text",
        "this is used to test the lenght of the text",
        "this is used to test the lenght of the text",
        "this is used to test the lenght of the text",
        "this is used to test the lenght of the text",]
    let section2 =
       ["this is used to test the lenght of the text"]
    let section3 =
       ["this is",
        "this is ",]


    @IBOutlet weak var scoreshow: UILabel!
    @IBOutlet weak var reset: UIButton!
    @IBOutlet weak var tableView: UITableView!

// --------------------------------------------------------------------------------------

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

    override func didReceiveMemoryWarning() {

        super.didReceiveMemoryWarning()
    }
//----------------------------------------------------------------------------------------
    // checkmarks when tapped

    func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath)
    {
        if let cell = tableView.cellForRowAtIndexPath(indexPath) {
            if cell.accessoryType == .Checkmark
            {
                cell.accessoryType = .None
            }
            else
            {
                cell.accessoryType = .Checkmark
            }
        }    
    }
//----------------------------------------------------------------------------------------
    //number of sections for the table

    func numberOfSectionsInTableView(tableView: UITableView) -> Int {
        return 5
    }
//----------------------------------------------------------------------------------------
    //Calculate the amount of rows

    func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int
    {
        return self.section1.count;
    }
//----------------------------------------------------------------------------------------
    //Cells text label and config

    func tableView(tableView: UITableView,cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell
    {
        let cell:UITableViewCell = UITableViewCell(style:UITableViewCellStyle.Default, reuseIdentifier:"cell")
        cell.textLabel!.text = section1[indexPath.row]
        cell.textLabel!.numberOfLines = 0

        return cell
    }

//----------------------------------------------------------------------------------------

    @IBAction func resetswitch(sender: UIButton) {




    }
//----------------------------------------------------------------------------------------

}
Jp4Real asked 2020-08-11T17:11:35Z
10个解决方案
66 votes

迅捷> 3.0

func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
    if let cell = tableView.cellForRow(at: indexPath) {
        cell.accessoryType = .none
    }
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    if let cell = tableView.cellForRow(at: indexPath) {
        cell.accessoryType = .checkmark

    }
}

我通过使用两个Swift函数解决了:didSelectRowAtIndexPath和didDeselectRowAtIndexPath。

override func tableView(tableView: UITableView, didDeselectRowAtIndexPath indexPath: NSIndexPath) {
    if let cell = tableView.cellForRowAtIndexPath(indexPath) {
        cell.accessoryType = .None
    }
}
override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
    if let cell = tableView.cellForRowAtIndexPath(indexPath) {
        cell.accessoryType = .Checkmark

    }
}

为了使其正常工作,请在您的cellForRowAtIndexPath函数中添加一行代码,以在屏幕上绘制表格视图时选择一行,否则,第一次选择另一行时,didDeselectRowAtIndexPath将不会被调用。 像这样:

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier("cellData", forIndexPath: indexPath) 
    if (some condition to initially checkmark a row)
        cell.accessoryType = .Checkmark
        tableView.selectRowAtIndexPath(indexPath, animated: false, scrollPosition: UITableViewScrollPosition.Bottom)
    } else {
        cell.accessoryType = .None
    }

    return cell
}
Roger answered 2020-08-11T17:11:51Z
35 votes

试试这个:

var checked = [Bool]() // Have an array equal to the number of cells in your table


func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell = self.tableView.dequeueReusableCellWithIdentifier("cell") as! UITableViewCell

    //configure you cell here.
    if !checked[indexPath.row] {
        cell.accessoryType = .None
    } else if checked[indexPath.row] {
        cell.accessoryType = .Checkmark
    }
    return cell
}

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
    if let cell = tableView.cellForRowAtIndexPath(indexPath) {
        if cell.accessoryType == .Checkmark {
             cell.accessoryType = .None
             checked[indexPath.row] = false
        } else {
             cell.accessoryType = .Checkmark
             checked[indexPath.row] = true
        }
    }    
}

重置所有复选框:

func resetChecks() {
   for i in 0.. < tableView.numberOfSections {
       for j in 0.. < tableView.numberOfRowsInSection(i) {
            if let cell = tableView.cellForRowAtIndexPath(NSIndexPath(forRow: j, inSection: i)) {
               cell.accessoryType = .None
            }
       }
   }
}
Dejan Skledar answered 2020-08-11T17:12:16Z
17 votes

斯威夫特3.0
仅使用一项功能即可使其简单

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    tableView.deselectRow(at: indexPath, animated: true)

    if let cell = tableView.cellForRow(at: indexPath as IndexPath) {
        if cell.accessoryType == .checkmark {
            cell.accessoryType = .none
        } else {
            cell.accessoryType = .checkmark
        }
    }   
}
AnupamChugh answered 2020-08-11T17:12:40Z
17 votes

UITableView保持单个或多个选择的选定状态。 因此,IMO有一个很好的理由将整个并行状态保持在某个位置。 如果只想基于选择状态更改单元格的外观,请在单元格中进行更改。

在您的UITableViewCell子类中,重写setSelected,如下所示:

override func setSelected(_ selected: Bool, animated: Bool) {
    super.setSelected(selected, animated: animated)
    self.accessoryType = selected ? .checkmark : .none
}

无需使用任何表视图委托方法。

注意:您必须调用super.setSelected,否则单元将无法正确保持所选状态。

n13 answered 2020-08-11T17:13:14Z
13 votes

斯威夫特3.0

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    if let cell = tableView.cellForRow(at: indexPath) {
        cell.accessoryType = .checkmark
    }
}

func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
    if let cell = tableView.cellForRow(at: indexPath) {
        cell.accessoryType = .none
    }
}
Wilson answered 2020-08-11T17:13:35Z
4 votes

Swift 4.0,现在一起:

import UIKit

class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
var yourData = ["Cool","Sweet","Awesome"]

var checked = [Bool]()

override func viewDidLoad() {
    super.viewDidLoad()
    checked = Array(repeating: false, count: yourData.count)
}

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return searchData.count
}
func tableView(_ tableView: UITableView, cellForRowAt IndexPath: IndexPath) -> UITableViewCell {
    let cell = self.tableView.dequeueReusableCellWithIdentifier("cell") as! UITableViewCell

    //configure you cell here.
    if checked[IndexPath.row] == false{
        cell.accessoryType = .none
    } else if checked[IndexPath.row] {
        cell.accessoryType = .checkmark
    }

    return cell
}

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    tableView.deselectRow(at: indexPath, animated: true)

    if let cell = tableView.cellForRow(at: indexPath as IndexPath) {
        if cell.accessoryType == .checkmark {
            cell.accessoryType = .none
            checked[indexPath.row] = false
        } else {
            cell.accessoryType = .checkmark
            checked[indexPath.row] = true
        }
    }
}

}

Brian answered 2020-08-11T17:13:59Z
1 votes

斯威夫特5.0

override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    tableView.deselectRow(at: indexPath, animated: true)

    if let cell = tableView.cellForRow(at: indexPath) {
        resetChecks()
        cell.accessoryType = .checkmark
    }
}

override func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
    self.tableView.cellForRow(at: indexPath)?.accessoryType = .none
}

func resetChecks() {
    for i in 0..<tableView.numberOfSections {
        for j in 0..<tableView.numberOfRows(inSection: i) {
            if let cell = tableView.cellForRow(at: IndexPath(row: j, section: i)) {
                cell.accessoryType = .none
            }
        }
    }
}
Kinergy answered 2020-08-11T17:14:20Z
0 votes
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {

    if self.checkedIndex == indexPath.row{

    }else{
        let cell = tableView.cellForRow(at: indexPath)
        cell?.accessoryType = .checkmark
        let indexPathh = IndexPath(row: checkedIndex, section: 0)
        let UnCheckCell = tableView.cellForRow(at: indexPathh)
        UnCheckCell?.accessoryType = .none
        checkedIndex = indexPath.row
    }
}
Javed siddique answered 2020-08-11T17:14:35Z
0 votes

迅速更新4.2每个新选择删除先前的对号

   func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    print(self.coloursArray[indexPath.row])

     self.tableView.cellForRow(at: indexPath)?.accessoryType = .checkmark
}

func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
    self.tableView.cellForRow(at: indexPath)?.accessoryType = .none
}
M Murteza answered 2020-08-11T17:14:55Z
0 votes

由于我没有看到任何人列出此内容,因此您可以创建一个自定义UITableViewCell,该方法将覆盖其setSelected()方法并将默认值.selectionStyle设置为.gray,从而切换选中的选中标记:

class CheckableTableViewCell: UITableViewCell {

    override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)
        selectionStyle = .gray
    }

    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
    }

    override func setSelected(_ selected: Bool, animated: Bool) {
        super.setSelected(selected, animated: animated)
        accessoryType = selected ? .checkmark : .none
    }
}
Wilson Desimini answered 2020-08-11T17:15:16Z
translate from https://stackoverflow.com:/questions/30059704/uitableviewcell-checkmark-to-be-toggled-on-and-off-when-tapped