Swift-editing functions for tables (add, delete)

Table (TableView) is indeed a very useful control, now to implement an editing feature implementation, including adding and deleting, deleting include long press DELETE and left slide delete

As follows:

The specific code is as follows:

1, create the table (this table has 2 areas, with the district head and the end of the area), and the long-press gesture method binding

classtenthviewcontroller:uiviewcontroller,uitableviewdelegate,uitableviewdatasource,uigesturerecognizerdelegate {        varTableview:uitableview?varOnearray =Nsmutablearray ()varTwoarray =Nsmutablearray ()varArray =Nsmutablearray ()varHadheaders:[string]?Overridefunc viewdidload () {super.viewdidload ()//Do any additional setup after loading the view.Self.view.backgroundColor =Uicolor.whitecolor () self.title="editing functions for tables (delete, insert)"Inittabelview () Onearray= ["1","2","3"]; Twoarray= [" One"," Both","three"]; Array.addobjectsfromarray ([Onearray,twoarray])} func Inittabelview () {Let Headerlab=UILabel () headerlab.frame= CGRectMake (0,0, Screen_width, -) Headerlab.backgroundcolor=Uicolor.orangecolor () Headerlab.textcolor=Uicolor.whitecolor () headerlab.numberoflines=0Headerlab.linebreakmode=nslinebreakmode.bywordwrapping Headerlab.text="This is a table head ."Headerlab.font= Uifont.systemfontofsize ( -) Let Footerlab=UILabel () footerlab.frame= CGRectMake (0,0, Screen_width, -) Footerlab.backgroundcolor=Uicolor.orangecolor () Footerlab.textcolor=Uicolor.whitecolor () footerlab.numberoflines=0Footerlab.linebreakmode=nslinebreakmode.bywordwrapping Footerlab.text="This is a footer ."Footerlab.font= Uifont.systemfontofsize ( -) Self.hadheaders= [                        "This is the first district .",            "This is the second district ."] TableView=UITableView (frame:self.view.frame, style:. Plain) TableView!. RowHeight = -TableView!.Delegate=Self tableView!. DataSource =Self tableView?. Tablefooterview =Footerlab TableView?. Tableheaderview =Headerlab Self.view.addSubview (TableView!)                //register a cell for reuseTableView?. RegisterClass (Uitableviewcell.self, Forcellreuseidentifier:"Swiftcells")                //binding a response to a long pressLet longpress =Uilongpressgesturerecognizer (target:self,action: #selector (Tableviewcelllongpressed (_:)))//AgentLongpress.Delegate=Self longpress.minimumpressduration=1.0        //add a long-tap gesture to a view that needs to implement a long-press operationself.tableview!. Addgesturerecognizer (longpress)}

2, long press the implementation of the deleted response method

func tableviewcelllongpressed (gesturerecognizer:uilongpressgesturerecognizer) {ifGesturerecognizer.state = =Uigesturerecognizerstate.began {print ("Start")        }                ifGesturerecognizer.state = =uigesturerecognizerstate.changed {print ("have chosen")        }                ifGesturerecognizer.state = =uigesturerecognizerstate.ended {print ("End")                        //toggle between Normal and edit states            ifTableView?. editing = =false{TableView?. Setediting (true, Animated:true)            }Else{TableView?. Setediting (false, Animated:true)            }        }            }

3. Implementation of form-specific proxy method

Func Numberofsectionsintableview (Tableview:uitableview)Int {returnArray.count} func TableView (Tableview:uitableview, numberofrowsinsection section:int)-Int {returnarray.objectatindex (section). Count}//Set the area headerFunc TableView (Tableview:uitableview, Titleforheaderinsection section:int), String? {                varheaders = self.hadheaders!returnHeaders[section]} func tableView (Tableview:uitableview, Cellforrowatindexpath Indexpath:nsindexpath) -UITableViewCell {Let identify:string="Swiftcells"Let cell= Tableview.dequeuereusablecellwithidentifier (Identify,forindexpath:indexpath) asUITableViewCell Cell.selectionstyle=Uitableviewcellselectionstyle.none Cell.accessorytype=Uitableviewcellaccessorytype.disclosureindicator Cell.textlabel?. Text = Array.objectatindex (indexpath.section). Objectatindex (Indexpath.row) as?StringreturnCell} func tableView (Tableview:uitableview, Didselectrowatindexpath Indexpath:nsindexpath) { Tableview.deselectrowatindexpath (Indexpath, animated:true) Let Itemstring=Array[indexpath.section][indexpath.row] Let Alertview=Uialertview () alertview.title="Tips"Alertview.message="you have chosen \ (itemstring)"Alertview.addbuttonwithtitle ("Determine") Alertview.show ()} func TableView (Tableview:uitableview, Editingstyleforrowatindexpath Indexpath: Nsindexpath)-Uitableviewcelleditingstyle {//The first area is the insert operation, and the second one is the delete operation        ifIndexpath.section = =1 {                        returnUitableviewcelleditingstyle.insert//Insert        }                returnUitableviewcelleditingstyle.delete//Delete    }        //the specific implementation of the left slip deletionfunc TableView (Tableview:uitableview, Commiteditingstyle Editingstyle:uitableviewcelleditingstyle, Forrowatindexpath Indexpath:nsindexpath) {ifEditingstyle = =uitableviewcelleditingstyle.delete {array[indexpath.section].removeobjectatindex (indexPath.ro W) tableview.reloaddata () tableview.setediting (true, Animated:true)                    }Else ifEditingstyle = =Uitableviewcelleditingstyle.insert {array[indexpath.section].insertobject ("Insert a new", AtIndex:indexPath.row +1) Tableview.reloaddata ()}}

This will achieve the effect!

Swift-editing functions for tables (add, delete)