IOS学习之UITableView表视图控件初步

表视图这个控件学习的时候，发现是目前我接触到最复杂的组件。

在Android中也提供了类似表视图的控件叫ListView。

原生的ListView，支持的操作其实很有限，数据的条目展示，点击或是长按的操作。

后来慢慢的衍生出来的索引，分区，动态改变指定条目位置等。

到了IOS发现，原来都是这些设计概念全是从IOS的表视图移植过去的吧。

因此，IOS的表视图是个挺丰富的控件

以下文章内容我基本是这么个流程划分

最简单的表视图——》自定义Cell表——》可编辑表——》可动态移动表

以下是配合Navigation导航条控件演示的tableView各种实现。

一：基础表视图

我们看下表视图一个大致的界面模型

首先是navc的顶级视图



这个视图控制器的代码基本很前面提到的导航那章一样，只是多了一个数组容器来保存要显示的三个二级视图控制器

看下m文件

[cpp]
view plaincopyprint?

//
// NonoFirstLevelViewController.m

// NavTest
//
// Created by Nono on 12-4-26.

// Copyright (c) 2012年 NonoWithLilith. All rights reserved.

//

#import "NonoFirstLevelViewController.h"

#import "NonoSecondLevelViewController.h"

#import "SimpleTableViewController.h"

#import "CustomCellViewController.h"

#import "EditViewController.h"

@interface NonoFirstLevelViewController ()

@end

@implementation NonoFirstLevelViewController
@synthesize controllers = _controllers;
#pragma 实现头文件中自定义方法；
- (void)initAllSecondControllers:(NSMutableArray *)array
{
SimpleTableViewController *controller1 = [[SimpleTableViewController alloc] init];
[controller1 setTitle:@"简单表视图"];
[array addObject:controller1];
[controller1 release];

CustomCellViewController *controller2 = [[CustomCellViewController alloc] init];
[controller2 setTitle:@"自定义cell视图"];
[array addObject:controller2];
[controller2 release];


EditViewController *controller3 = [[EditViewController alloc] init];
[controller3 setTitle:@"可编辑视图"];
[array addObject:controller3];
[controller3 release];
}

- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
}
return self;
}

- (void)viewDidLoad
{
[super viewDidLoad];
self.title = @"表视图Demo";
//实例化一个可变数组
NSMutableArray *array = [[NSMutableArray alloc] init ];//

self.controllers = array;
[array release];
[self initAllSecondControllers:self.controllers];
}

- (void)viewDidUnload
{
[super viewDidUnload];
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

#pragma mark - Table view data source

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [self.controllers count];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"FirstLevelCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
}
NSUInteger row = [indexPath row];
NonoSecondLevelViewController *controller = [self.controllers objectAtIndex:row];
cell.textLabel.text = [controller title];
return cell;
}

#pragma mark - Table view delegate

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSUInteger row = [indexPath row];
NonoSecondLevelViewController *secondVC = [self.controllers objectAtIndex:row];
[self.navigationController pushViewController:secondVC animated:YES];

}

@end

//
//  NonoFirstLevelViewController.m
//  NavTest
//
//  Created by Nono on 12-4-26.
//  Copyright (c) 2012年 NonoWithLilith. All rights reserved.
//

#import "NonoFirstLevelViewController.h"
#import "NonoSecondLevelViewController.h"
#import "SimpleTableViewController.h"
#import "CustomCellViewController.h"
#import "EditViewController.h"
@interface NonoFirstLevelViewController ()

@end

@implementation NonoFirstLevelViewController
@synthesize controllers = _controllers;
#pragma 实现头文件中自定义方法；
- (void)initAllSecondControllers:(NSMutableArray *)array
{
    SimpleTableViewController *controller1 = [[SimpleTableViewController alloc] init];
    [controller1 setTitle:@"简单表视图"];
    [array addObject:controller1];
    [controller1 release];
    
    CustomCellViewController *controller2 = [[CustomCellViewController alloc] init];
     [controller2 setTitle:@"自定义cell视图"];
    [array addObject:controller2];
    [controller2 release];
    
    
    EditViewController *controller3 = [[EditViewController alloc] init];
    [controller3 setTitle:@"可编辑视图"];
    [array addObject:controller3];
    [controller3 release];
}

- (id)initWithStyle:(UITableViewStyle)style
{
    self = [super initWithStyle:style];
    if (self) {
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    self.title = @"表视图Demo";
    //实例化一个可变数组
    NSMutableArray *array = [[NSMutableArray alloc] init ];//
    self.controllers = array;
    [array release];
    [self initAllSecondControllers:self.controllers];
}

- (void)viewDidUnload
{
    [super viewDidUnload];
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

#pragma mark - Table view data source
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return [self.controllers count];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"FirstLevelCell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
    }
    NSUInteger row = [indexPath row];
    NonoSecondLevelViewController *controller = [self.controllers objectAtIndex:row];
    cell.textLabel.text = [controller title];
    return cell;
}

#pragma mark - Table view delegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSUInteger row = [indexPath row];
    NonoSecondLevelViewController  *secondVC = [self.controllers objectAtIndex:row];
     [self.navigationController pushViewController:secondVC animated:YES];
     
}

@end

顶视图类基本就是一个导航作用。

线面我么先看最简单的这条目

简单表视图：



[cpp]
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- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
//控件复用
static NSString *CellIdentifier = @"simpleCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];

}
NSUInteger row = [indexPath row];
NSString *string = [self.data objectAtIndex:row];
cell.textLabel.text = string;

//这个可以定义item右端小图标显示风格，默认是none;

//cell.accessoryType = UITableViewCellAccessoryDetailDisclosureButton;

[string release];
return cell;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    //控件复用
    static NSString *CellIdentifier = @"simpleCell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
      
    }
    NSUInteger row = [indexPath row];
    NSString *string = [self.data objectAtIndex:row];
    cell.textLabel.text = string;
    
    //这个可以定义item右端小图标显示风格，默认是none;
    //cell.accessoryType = UITableViewCellAccessoryDetailDisclosureButton;
    [string release];
    return cell;
}

这边主要说如下几点：

1》。控件得复用，这个和Android很像，因此我们在获取cell对象时，先从原来得复用队列里查找（更具指定的标记，这点也告诉我们，我们可以设置多个标记），
若没有，那就新建一个
2》。整个tableview的style分两种，一种就是顶级视图界面的那种: self.tableView.style = UITableViewStylePlain,另一种就是这个视图的风格：
self.tableView.style = UITableViewStyleGrouped
3》.对于每个item，单元格样式使用了3个不同的单元格元素。依次左边开始有个图标，中间就是一个label，右侧会有一个详情栏。

4》。同样的对于每个cell也是有样式风格的 cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier]
针对3，4设置后得某种效果如下：



左端可以自己敬爱个图标进去，黑体字就是文本label，灰色的是详细文本标签，小箭头图标是accessoryType
以下就是代码

[cpp]
view plaincopyprint?

static NSString *CellIdentifier = @"FirstLevelCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:CellIdentifier] autorelease];
}
NSUInteger row = [indexPath row];
NonoSecondLevelViewController *controller = [self.controllers objectAtIndex:row];
cell.textLabel.text = [controller title];
cell.detailTextLabel.text = @"什么情况";
//这个可以定义item右端小图标显示风格，默认是none;
cell.accessoryType = UITableViewCellAccessoryDetailDisclosureButton;
return cell;

static NSString *CellIdentifier = @"FirstLevelCell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:CellIdentifier] autorelease];
    }
    NSUInteger row = [indexPath row];
    NonoSecondLevelViewController *controller = [self.controllers objectAtIndex:row];
    cell.textLabel.text = [controller title];
    cell.detailTextLabel.text = @"什么情况";
    //这个可以定义item右端小图标显示风格，默认是none;
    cell.accessoryType = UITableViewCellAccessoryDetailDisclosureButton;
    return cell;

默认风格的cell是不能显示详情标签内容的。

其实很多效果，代码都走一边就看出来了，具体就自己改动下代码就ok了
二：自定义的Cell



自定义的cell，xib实现



基本没什么好说的，看下该类额控制器文件

[cpp]
view plaincopyprint?

//
// CustomCellViewController.m
// NavTest
//
// Created by Nono on 12-5-4.

// Copyright (c) 2012年 NonoWithLilith. All rights reserved.

//

#import "CustomCellViewController.h"


@interface CustomCellViewController ()

@end
@implementation CustomCellViewController
@synthesize customCell = _customCell;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}

- (void)viewDidLoad
{
[super viewDidLoad];
NSMutableArray *array = [[NSMutableArray alloc] initWithObjects:@"陈凯",@"Nono",@"Lilith",@"窗前明月光",@"疑是地上霜",@"举头望明月",@"低头思故乡",@"锄禾日当午",@"汗滴禾下土",@"谁知盘中餐",@"粒粒皆幸苦",nil];
self.data = array;
[array release];
// Do any additional setup after loading the view from its nib.

}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}


#pragma mark_
#pragma 数据源方法
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [self.data count];

}

// Row display. Implementers should *always* try to reuse cells by setting each cell's reuseIdentifier and querying for available reusable cells with dequeueReusableCellWithIdentifier:

// Cell gets various attributes set automatically based on table (separators) and data source (accessory views, editing controls)


- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{

static NSString *CellIdentifier = @"CustomCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"CustomCell" owner:self options:nil];
if([nib count] > 0){
cell = self.customCell;
cell.backgroundColor = [UIColor redColor];
}else{
NSLog(@"加载 nib文件失败");
}

}
NSUInteger row = [indexPath row];
NSString *string = [self.data objectAtIndex:row];
UILabel *customlabel =(UILabel*) [cell viewWithTag:11];
customlabel.text = string;
[string release];
return cell;
}
@end

//
//  CustomCellViewController.m
//  NavTest
//
//  Created by Nono on 12-5-4.
//  Copyright (c) 2012年 NonoWithLilith. All rights reserved.
//

#import "CustomCellViewController.h"

@interface CustomCellViewController ()

@end
@implementation CustomCellViewController
@synthesize customCell = _customCell;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    NSMutableArray *array = [[NSMutableArray alloc] initWithObjects:@"陈凯",@"Nono",@"Lilith",@"窗前明月光",@"疑是地上霜",@"举头望明月",@"低头思故乡",@"锄禾日当午",@"汗滴禾下土",@"谁知盘中餐",@"粒粒皆幸苦",nil];
    self.data = array;
    [array release];
    // Do any additional setup after loading the view from its nib.
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

#pragma mark_
#pragma 数据源方法
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return [self.data count];
    
}

// Row display. Implementers should *always* try to reuse cells by setting each cell's reuseIdentifier and querying for available reusable cells with dequeueReusableCellWithIdentifier:
// Cell gets various attributes set automatically based on table (separators) and data source (accessory views, editing controls)

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    
    static NSString *CellIdentifier = @"CustomCell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"CustomCell" owner:self options:nil];
        if([nib count] > 0){
            cell = self.customCell;
            cell.backgroundColor = [UIColor redColor];
        }else{
            NSLog(@"加载 nib文件失败");
        }
        
    }
    NSUInteger row = [indexPath row];
    NSString *string = [self.data objectAtIndex:row];
    UILabel *customlabel =(UILabel*) [cell viewWithTag:11];
    customlabel.text = string;
    [string release];
    return cell;
}
@end

提几个注意点：

1》。cell的xib文件得拥有者设置成该类，在该类得头文件中定义一个输出口。
2》 我们看到cell的xib文件有3个label视图我们能看到，其实还有一个没有title的label视图，也就我们要动态添加数据的那个视图，
在xib文件中需要给他设置一个tag，这样我们在代码里才能根据tag找出该对象（和Android中得id很像）。这边我定义了11，所以
UILabel *customlabel =(UILabel*) [cellviewWithTag:11];
customlabel.text = string;
3》。xib文件加载，我是根据书上得列子方法。根据应用的束来获取。

4》。哦，还有点就是 static NSString *CellIdentifier = @"CustomCell";。这个在xib文件得指定器中定义，因为原本我们新建一个cell是有个传入指定标签，

而现在这个新建一个cell说白了就是直接从xib中加载一个实例化了，那么指定器怎需要在xib中定义下。

对于cell简单的自定义就是这样。

三：可编辑的tableView（删除，添加，移动）



[cpp]
view plaincopyprint?

//
// EditViewController.m
// NavTest
//
// Created by Nono on 12-5-4.

// Copyright (c) 2012年 NonoWithLilith. All rights reserved.

//

#import "EditViewController.h"


@interface EditViewController ()

@end

@implementation EditViewController
@synthesize edittableView;
- (void)editButtonPressed:(id)sender
{
[self.edittableView setEditing:!self.edittableView.editing animated:(YES)];
if (edittableView.editing) {
[self.navigationItem.rightBarButtonItem setTitle:@"完成"];
}else {
[self.navigationItem.rightBarButtonItem setTitle:@"编辑"];
};
NSLog(@"点击了按钮");
}
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization

}
return self;
}

- (void)viewDidLoad
{
[super viewDidLoad];
NSMutableArray *array = [[NSMutableArray alloc] initWithObjects:@"陈凯",@"Nono",@"Lilith",@"窗前明月光",@"疑是地上霜",@"举头望明月",@"低头思故乡",@"锄禾日当午",@"汗滴禾下土",@"谁知盘中餐",@"粒粒皆幸苦",nil];
self.data = array;
[array release];
UIBarButtonItem *rigthButton = [[UIBarButtonItem alloc] initWithTitle:@"编辑" style:UIBarButtonItemStyleBordered target:self action:@selector(editButtonPressed:)];
self.navigationItem.rightBarButtonItem = rigthButton;
//self.navigationItem.prompt = @"加载";

[rigthButton release];
// Do any additional setup after loading the view from its nib.

}

- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.

// e.g. self.myOutlet = nil;

}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

#pragma mark - Table view data source


- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// Return the number of rows in the section.

return [self.data count];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"editLevelCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
}
NSUInteger row = [indexPath row];
NSString *string = [self.data objectAtIndex:row];
cell.textLabel.text = string;
[string release];
return cell;
}

#pragma 实现数据源协议中一些关于编辑操作方法

- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
{
//是否可以编辑，即是tableView setEditing的前提；默认是yes，实现这个方法估计主要是选择性的编辑条目。

return YES;
}

- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath
{
//同理默认其实就是yes，移动模式（会显示可以触摸得移动button）必须是在实现了下面这个方法才有效，否则及时yes了，移动模式条也是不显示的，简单的说，你不能执行移动操作

return YES;
}
//移动操作
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)sourceIndexPath toIndexPath:(NSIndexPath *)destinationIndexPath
{
//拖动得思路就是先备份选中行，删除原来那份，将备份的一份插入到目标行

NSUInteger fromRow = [sourceIndexPath row];
NSUInteger toRow = [destinationIndexPath row];
id ob = [[self.data objectAtIndex:fromRow] retain];
[self.data removeObjectAtIndex:fromRow];
[self.data insertObject:ob atIndex:toRow];
[ob release];
}

- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
NSUInteger row = [indexPath row];
//提交操作完的编辑
if (editingStyle == UITableViewCellEditingStyleDelete) {
[self.data removeObjectAtIndex:row]; //删除操作

[tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
}

if (editingStyle == UITableViewCellEditingStyleInsert) {
[self.data insertObject:@"插入数据" atIndex:row];//插入操作

[tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationLeft];
}
}

#pragma 实现tableView委托中一些方法
- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath;
{
//设置可编辑得样式：系统提供了三种，一种是删除，一种是插入，一种时是none

NSInteger row = [indexPath row];
if(row %2 == 0)//这边做了小处理，间隔显示删除和插入

{
return UITableViewCellEditingStyleDelete;
}
return UITableViewCellEditingStyleInsert;
}
@end

//
//  EditViewController.m
//  NavTest
//
//  Created by Nono on 12-5-4.
//  Copyright (c) 2012年 NonoWithLilith. All rights reserved.
//

#import "EditViewController.h"

@interface EditViewController ()

@end

@implementation EditViewController
@synthesize edittableView;
- (void)editButtonPressed:(id)sender
{   
    [self.edittableView setEditing:!self.edittableView.editing animated:(YES)];
    if (edittableView.editing) {
        [self.navigationItem.rightBarButtonItem setTitle:@"完成"];
    }else {
        [self.navigationItem.rightBarButtonItem setTitle:@"编辑"];
    };
    NSLog(@"点击了按钮");
}
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    NSMutableArray *array = [[NSMutableArray alloc] initWithObjects:@"陈凯",@"Nono",@"Lilith",@"窗前明月光",@"疑是地上霜",@"举头望明月",@"低头思故乡",@"锄禾日当午",@"汗滴禾下土",@"谁知盘中餐",@"粒粒皆幸苦",nil];
    self.data = array;
    [array release];
    UIBarButtonItem *rigthButton = [[UIBarButtonItem alloc]  initWithTitle:@"编辑"  style:UIBarButtonItemStyleBordered  target:self  action:@selector(editButtonPressed:)];
    self.navigationItem.rightBarButtonItem = rigthButton;
    //self.navigationItem.prompt = @"加载";
    [rigthButton release]; 
    // Do any additional setup after loading the view from its nib.
}

- (void)viewDidUnload
{
    [super viewDidUnload];
    // Release any retained subviews of the main view.
    // e.g. self.myOutlet = nil;
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

#pragma mark - Table view data source

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    // Return the number of rows in the section.
    return [self.data count];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"editLevelCell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
    }
    NSUInteger row = [indexPath row];
    NSString *string = [self.data objectAtIndex:row];
    cell.textLabel.text = string;
    [string release];
    return cell;
}

#pragma 实现数据源协议中一些关于编辑操作方法
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
{
    //是否可以编辑，即是tableView setEditing的前提；默认是yes，实现这个方法估计主要是选择性的编辑条目。
    return YES;
}

- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath
{
    //同理默认其实就是yes，移动模式（会显示可以触摸得移动button）必须是在实现了下面这个方法才有效，否则及时yes了，移动模式条也是不显示的，简单的说，你不能执行移动操作
    return YES;
}
//移动操作
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)sourceIndexPath toIndexPath:(NSIndexPath *)destinationIndexPath
{
    //拖动得思路就是先备份选中行，删除原来那份，将备份的一份插入到目标行
    NSUInteger fromRow = [sourceIndexPath row];
    NSUInteger toRow = [destinationIndexPath row];
    id ob = [[self.data objectAtIndex:fromRow] retain];
    [self.data removeObjectAtIndex:fromRow];
    [self.data insertObject:ob atIndex:toRow];
    [ob release];
}

- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
      NSUInteger row = [indexPath row];
    //提交操作完的编辑
    if (editingStyle == UITableViewCellEditingStyleDelete) {
        [self.data removeObjectAtIndex:row]; //删除操作
        [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
    }
    
    if (editingStyle == UITableViewCellEditingStyleInsert) {
        [self.data insertObject:@"插入数据" atIndex:row];//插入操作
        [tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationLeft];
    } 
}

#pragma 实现tableView委托中一些方法
- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath;
{
    //设置可编辑得样式：系统提供了三种，一种是删除，一种是插入，一种时是none
    NSInteger row = [indexPath row];
    if(row %2 == 0)//这边做了小处理，间隔显示删除和插入
    {
        return UITableViewCellEditingStyleDelete;
    }
    return UITableViewCellEditingStyleInsert;
}
@end

基本代码如上。