Ios.uikit.17.uitableview--Cells operation

1. Case Description: Add, delete, move cells in table view, 01,02

Fig. 01 FIG. 02

2,. h

#import <UIKit/UIKit.h>@interface cq26viewcontroller:uiviewcontroller< uitableviewdatasource,uitableviewdelegate,uitextfielddelegate> ** * *  Listteams; @end

3,. m

#import "CQ26ViewController.h"@interfaceCq26viewcontroller ()@end@implementationCq26viewcontroller- (void) viewdidload{[Super Viewdidload]; //1. Set the navigation barSelf.navgationItem.rightBarButtonItem =Self.editbuttonitem; Self.navgationItem.title=@"cell insertion and deletion"; //2. Set the cell text boxSelf.txtField.hidden =YES; Self.txtfield.Delegate=Self ; //3. Assigning the current view controller to delegates and data sources that represent graphsSelf.tableview.Delegate=Self ; Self.tableView.dataSource=Self ; Self.listteams= [[Nsmutablearray alloc] Initwithobjects:@"Heilongjiang",@"Jilin",@"Liaoning", nil];}-(CGFloat) TableView: (UITableView *) TableView Heightforrowatindexpath: (Nsindexpath *) indexpath{return  -;}#pragmaMark-Uiviewcontroller life cycle method for responding to changes in view editing state-(void) Setediting: (BOOL) editing animated: (bool) animated {[Super setediting:editing animated:animated];    [Self.tableview setediting:editing Animated:yes]; if(editing) {Self.txtField.hidden=NO; } Else{Self.txtField.hidden=YES; }}#pragmaMark Uitableviewdatasource Protocol Method-(Nsinteger) TableView: (UITableView *) TableView numberofrowsinsection: (nsinteger) section{return[Self.listteams Count] +1;}-(UITableViewCell *) TableView: (UITableView *) TableView Cellforrowatindexpath: (Nsindexpath *) indexpath{//1. Load cell    StaticNSString *cellidentifier =@"Cell"; UITableViewCell*cell =[TableView Dequeuereusablecellwithidentifier:cellidentifier]; if(Cell = =Nil) {Cell=[[UITableViewCell alloc] Initwithstyle:uitableviewcellstyledefault reuseidentifier:cellidentifier]; }    //2. Set the contents of the cellBOOL B_addcell = (Indexpath.row = =self.listTeams.count); if(!B_addcell) {Cell.accessorytype=Uitableviewcellaccessorydisclosureindicator; Cell.textLabel.text=[Self.listteams ObjectAtIndex:indexPath.row]; }Else{self.txtField.frame= CGRectMake (Ten,0, -, -); Self.txtField.text=@"";    [Cell.contentview AddSubview:self.txtField]; }        returncell;}#pragmaMark Uitableviewdelegate Protocol Method-(Uitableviewcelleditingstyle) TableView: (UITableView *) TableView Editingstyleforrowatindexpath: (Nsindexpath *) indexpath{if(Indexpath.row = =[Self.listteams Count]) {        returnUitableviewcelleditingstyleinsert; }Else{        returnUitableviewcelleditingstyledelete; }}#pragmaMark Uitableviewdatasource Protocol Method-(void) TableView: (UITableView *) TableView Commiteditingstyle: (uitableviewcelleditingstyle) Editingstyle Forrowatindexpath: (Nsindexpath *) indexpath{if(Editingstyle = =uitableviewcelleditingstyledelete)        {[Self.listteams removeObjectAtIndex:indexPath.row]; [Self.tableview Deleterowsatindexpaths:[nsarray Arraywithobject:indexpath] Withrowanimation:    Uitableviewrowanimationautomatic]; }Else{[Self.listteams insertObject:self.txtField.text atindex:[self.listteams Count]]; [Self.tableview Insertrowsatindexpaths:[nsarray Arraywithobject:indexpath] Withrowanimation:    Uitableviewrowanimationfade]; } [Self.tableview reloaddata];}#pragmaMark--Uitextfielddelegate delegate method, close keyboard-(BOOL) Textfieldshouldreturn: (Uitextfield *) textfield{[TextField Resignfirstresponder]; returnYES;}#pragmaMark-Uitextfielddelegate delegate method to avoid the keyboard occlusion text box-(void) Textfielddidbeginediting: (Uitextfield *) TextField {UITableViewCell*cell = (uitableviewcell*) [[TextField Superview] superview]; [Self.tableview Setcontentoffset:cgpointmake (0.0, CELL.FRAME.ORIGIN.Y) animated:yes];}- (void) didreceivememorywarning{[Super didreceivememorywarning]; //Dispose of any resources the can be recreated.}@end

4. Mobile Code

-(BOOL) TableView: (UITableView *) TableView Canmoverowatindexpath: (nsindexpath*) indexpath{returnYES;}- (void) TableView: (UITableView *) TableView Moverowatindexpath: (nsindexpath*) Sourceindexpath Toindexpath: (Nsindexpath*) destinationindexpath{NSString*stringtomove =[Self.listteams ObjectAtIndex:sourceIndexPath.row];    [Self.listteams RemoveObjectAtIndex:sourceIndexPath.row]; [Self.listteams insertobject:stringtomove atIndex:destinationIndexPath.row];}#pragmaMark--uitableviewdelegate Protocol Method-(Uitableviewcelleditingstyle) TableView: (UITableView *) TableView Editingstyleforrowatindexpath: (Nsindexpath*) indexpath{returnUitableviewcelleditingstylenone;}#pragmaMark-Uiviewcontroller life cycle method for responding to changes in view editing state-(void) Setediting: (BOOL) editing animated: (bool) animated {[Super setediting:editing animated:animated];    [Self.tableview setediting:editing Animated:yes]; }