Swift，添加滑动删除UITableViewCell
我正在学习iOS的Swift，我正在用UITableView制作一个CheckList应用程序。 我想知道如何添加滑动删除UITableViewCell 。
这是我的ViewController.swift：
import UIKit class ViewController: UIViewController, UITextFieldDelegate, UITableViewDelegate, UITableViewDataSource { var tableView: UITableView! var textField: UITextField! var tableViewData:Array<String> = [] // Define Colors let lightColor: UIColor = UIColor(red: 0.996, green: 0.467, blue: 0.224, alpha: 1) let medColor: UIColor = UIColor(red: 0.973, green: 0.388, blue: 0.173, alpha: 1) let darkColor: UIColor = UIColor(red: 0.800, green: 0.263, blue: 0.106, alpha: 1) let greenColor: UIColor = UIColor(red: 0.251, green: 0.831, blue: 0.494, alpha: 1) init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: NSBundle?) { super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil) // Custom initialization } override func viewDidLoad() { super.viewDidLoad() //Set up table view self.tableView = UITableView(frame: CGRectMake(0, 100, self.view.bounds.size.width, self.view.bounds.size.height-100), style: UITableViewStyle.Plain) self.tableView.registerClass(MyTableViewCell.self, forCellReuseIdentifier: "myCell") self.tableView.backgroundColor = darkColor //self.tableView.separatorStyle = UITableViewCellSeparatorStyle.None self.tableView.delegate = self self.tableView.dataSource = self self.view.addSubview(self.tableView) //Set up text field self.textField = UITextField(frame: CGRectMake(0, 0, self.view.bounds.size.width, 100)) self.textField.backgroundColor = lightColor self.textField.font = UIFont(name: "AvenirNext-Bold", size: 26) self.textField.delegate = self self.view.addSubview(self.textField) } //Table View Delegate func tableView(tableView: UITableView!, numberOfRowsInSection section: Int) -> Int { return tableViewData.count } func tableView(tableView: UITableView!, cellForRowAtIndexPath indexPath: NSIndexPath!) -> UITableViewCell! { var myNewCell: MyTableViewCell = tableView.dequeueReusableCellWithIdentifier("myCell", forIndexPath: indexPath) as MyTableViewCell myNewCell.text = self.tableViewData[indexPath.row] return myNewCell } func tableView(tableView: UITableView!, didSelectRowAtIndexPath indexPath: NSIndexPath!) { let mySelectedCell:UITableViewCell = tableView.cellForRowAtIndexPath(indexPath) //Colors mySelectedCell.detailTextLabel.textColor = UIColor.whiteColor() mySelectedCell.tintColor = UIColor.whiteColor() //Setup Details / Date let myDate:NSDate = NSDate() var myDateFormatter:NSDateFormatter = NSDateFormatter() myDateFormatter.dateStyle = NSDateFormatterStyle.MediumStyle mySelectedCell.detailTextLabel.text = myDateFormatter.stringFromDate(myDate) mySelectedCell.accessoryType = UITableViewCellAccessoryType.Checkmark mySelectedCell.backgroundColor = greenColor } override func prefersStatusBarHidden() -> Bool { return true } //Text Field Delegate func textFieldShouldReturn(textField: UITextField!) -> Bool { tableViewData.append(textField.text) textField.text = "" self.tableView.reloadData() textField.resignFirstResponder() return true } }
这是MyTableViewCell.swift：
import UIKit class MyTableViewCell: UITableViewCell { let medColor: UIColor = UIColor(red: 0.973, green: 0.388, blue: 0.173, alpha: 1) init(style: UITableViewCellStyle, reuseIdentifier: String) { super.init(style: UITableViewCellStyle.Subtitle, reuseIdentifier: reuseIdentifier) self.textColor = UIColor.whiteColor() self.backgroundColor = medColor self.selectionStyle = UITableViewCellSelectionStyle.None } override func awakeFromNib() { super.awakeFromNib() // Initialization code } override func setSelected(selected: Bool, animated: Bool) { super.setSelected(selected, animated: animated) // Configure the view for the selected state } }
我正在使用iOS8作为部署目标（不知道它会产生的差异）。
添加这两个function：
func tableView(tableView: UITableView, canEditRowAtIndexPath indexPath: NSIndexPath) -> Bool { return true } func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) { if (editingStyle == UITableViewCellEditingStyle.Delete) { // handle delete (by removing the data from your array and updating the tableview) } }
Swift 3.0：
func tableView(_ tableView: UITableView, canEditRowAt indexPath: IndexPath) -> Bool { return true } func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) { if (editingStyle == UITableViewCellEditingStyle.delete) { // handle delete (by removing the data from your array and updating the tableview) } }
滑动单元格时，允许您更改“删除”文本并添加更多button的另一种方法是使用editActionsForRowAtIndexPath 。
func tableView(tableView: UITableView, canEditRowAtIndexPath indexPath: NSIndexPath) -> Bool { return true } func tableView(tableView: (UITableView!), commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: (NSIndexPath!)) { } func tableView(tableView: UITableView, editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [AnyObject]? { var deleteAction = UITableViewRowAction(style: .Default, title: "Delete") {action in //handle delete } var editAction = UITableViewRowAction(style: .Normal, title: "Edit") {action in //handle edit } return [deleteAction, editAction] }
canEditRowAtIndexPath和commitEditingStyle仍然是必需的，但是您可以将commitEditingStyle留空，因为在editActionsForRowAtIndexPath处理了删除editActionsForRowAtIndexPath 。
import UIKit class ViewController: UIViewController ,UITableViewDelegate,UITableViewDataSource { var items: String[] = ["We", "Heart", "Swift","omnamay shivay","om namay bhagwate vasudeva nama"] var cell : UITableViewCell } @IBOutlet var tableview:UITableView override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view, typically from a nib. } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. } func tableView(tableView: UITableView!, numberOfRowsInSection section: Int) -> Int { return self.items.count; } func tableView(tableView: UITableView!, cellForRowAtIndexPath indexPath: NSIndexPath!) -> UITableViewCell! { var cell = tableView.dequeueReusableCellWithIdentifier("CELL") as? UITableViewCell if !cell { cell = UITableViewCell(style: UITableViewCellStyle.Value1, reuseIdentifier: "CELL")} cell!.textLabel.text = self.items[indexPath.row] return cell } func tableView(tableView: UITableView!, canEditRowAtIndexPath indexPath: NSIndexPath!) -> Bool { return true } func tableView(tableView: UITableView!, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath!) { if (editingStyle == UITableViewCellEditingStyle.Delete) { // handle delete (by removing the data from your array and updating the tableview) if let tv=tableView { items.removeAtIndex(indexPath!.row) tv.deleteRowsAtIndexPaths([indexPath], withRowAnimation: .Fade) } } } }
你可以试试这个：
func tableView(tableView: UITableView!, canEditRowAtIndexPath indexPath: NSIndexPath!) -> Bool { return true } func tableView(tableView: UITableView!, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath!) { if (editingStyle == UITableViewCellEditingStyle.Delete) { NamesTable.beginUpdates() Names.removeAtIndex(indexPath!.row) NamesTable.deleteRowsAtIndexPaths([indexPath], withRowAnimation: nil) NamesTable.endUpdates() } }
用它 ：
func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) { if editingStyle == UITableViewCellEditingStyle.Delete { langData.removeAtIndex(indexPath.row) //langData is array from i delete values tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: UITableViewRowAnimation.Automatic) } }
希望它可以帮助你
Swift 3支持自定义标题
func tableView(_ tableView: UITableView, canEditRowAt indexPath: IndexPath) -> Bool { return true } //If you want to change title func tableView(_ tableView: UITableView, titleForDeleteConfirmationButtonForRowAt indexPath: IndexPath) -> String? { return "Cancel" } func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) { if (editingStyle == UITableViewCellEditingStyle.delete) { // you might want to delete the item at the array first before calling this function tableView.deleteRows(at: indexPath, with: .automatic) } }
从Xcode 6.1.1开始，Dash的答案有一些细微的变化。
override func tableView(tableView: UITableView, canEditRowAtIndexPath indexPath: NSIndexPath) -> Bool { return true } override func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) { if (editingStyle == UITableViewCellEditingStyle.Delete) { // handle delete (by removing the data from your array and updating the tableview) } }
Swift 3：
func tableView(_ tableView: UITableView, canEditRowAt indexPath: IndexPath) -> Bool { return true } func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) { if (editingStyle == UITableViewCellEditingStyle.delete) { // delete data and row dataList.remove(at: indexPath.row) tableView.deleteRows(at: [indexPath], with: .fade) } }
适用于Swift 2.0中的我
override func tableView(tableView: UITableView, canEditRowAtIndexPath indexPath: NSIndexPath) -> Bool { return true } override func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) { } override func tableView(tableView: UITableView, editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [UITableViewRowAction]? { let block = UITableViewRowAction(style: .Normal, title: "Block") { action, index in print("Block") self.removeObjectAtIndexPath(indexPath, animated: true) } let delete = UITableViewRowAction(style: .Default, title: "Delete") { action, index in print("Delete") self.removeObjectAtIndexPath(indexPath, animated: true) } return [delete, block] }
func tableView(tableView: UITableView, editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [UITableViewRowAction]? { let delete = UITableViewRowAction(style: UITableViewRowActionStyle.Default, title: "DELETE"){(UITableViewRowAction,NSIndexPath) -> Void in print("What u want while Pressed delete") } let edit = UITableViewRowAction(style: UITableViewRowActionStyle.Normal, title: "EDIT"){(UITableViewRowAction,NSIndexPath) -> Void in print("What u want while Pressed Edit") } edit.backgroundColor = UIColor.blackColor() return [delete,edit] }
迅速3
func tableView(_ tableView: UITableView, canEditRowAt indexPath: IndexPath) -> Bool { return true } func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) { if (editingStyle == UITableViewCellEditingStyle.delete) { arrayCityName.remove(at: indexPath.row) self.tableCityName.reloadData() } }
在Swift 4 tableview中添加，轻扫以删除UITableViewCell
func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath) -> [UITableViewRowAction]? { let delete = UITableViewRowAction(style: .destructive, title: "delete") { (action, indexPath) in // delete item at indexPath } return [delete] }
SWIFT 3 – UIViewController
func tableView(_ tableView: UITableView, canEditRowAt indexPath: IndexPath) -> Bool { return true } func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) { if (editingStyle == UITableViewCellEditingStyle.delete) { // handle delete (by removing the data from your array and updating the tableview) print("delete tableview cell") } }
