TableViewCell,TableView,UITableViewCell

这次的学习是在Navigation-based Application模板中，用RootViewController class设置操作方法，使用UITableView的属性值。在导航控制器控件为程序的窗口添加上导航条，可构建多个视图连接导航按钮。这次的练习中，我在Navigation controller控件加入两个导航按钮，屏幕左上角Add按钮为表格添加新的一行,右上角Edit按钮为表格删除一行或者移动每行的顺序。当user点击edit按钮后，便会进入到编辑的视图，当user想要回到原先的视图便点击Done完成编辑。

ViewController.m文件

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

@synthesize rootTableView;

@synthesize dataArray;

@synthesize editButton;

@synthesize rowField;

- (void)viewDidLoad

{

    [super viewDidLoad];

// Do any additional setup after loading the view, typically from a nib.

    //定义内容文字

    dataArray = [[NSMutableArray alloc] initWithObjects:@"Row1", @"Row2",@"Row3",@"Row4",@"Row5",nil];

    //建立add按钮

    UIBarButtonItem *addButton = [[UIBarButtonItem alloc]

                                   initWithTitle:@"Add"

                                   style:UIBarButtonItemStyleBordered

                                   target:self

                                   action:@selector(AddButtonAction:)];

    self.navigationItem.leftBarButtonItem = addButton;

}

//构建操作方法，点击按钮执行

-(IBAction) EditButtonAction:(id)sender

{

//    [rootTableView setEditing: YES

//                     animated: YES];

    if ([sender tag] == 1) {

        [editButton setTitle:@"Done" forState:UIControlStateNormal];

        [editButton setTag:2];

        [rootTableView setEditing:YES animated:YES];

    }else if ([sender tag] == 2){

        [editButton setTitle:@"Edit" forState:UIControlStateNormal];

        [editButton setTag:1];

        [rootTableView setEditing:NO animated:YES];

    }

}

//添加addbutton

-(IBAction)AddButtonAction:(id)sender

{

    UIAlertView *dialog = [[UIAlertView alloc] initWithTitle:@"添加一行"

                                                    message:@"" 

                                                    delegate:self 

                                           cancelButtonTitle:@"取消"

                                           otherButtonTitles:@"确定", nil];

    rowField = [[UITextField alloc] initWithFrame:CGRectMake(20.0, 38.0, 245.0, 20.0)];

    [rowField setBackgroundColor:[UIColor whiteColor]];

    [dialog addSubview:rowField];

    [dialog show];

    [dialog release];

    [rowField release];

}

-(void) alertView: (UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex

{

    if ((buttonIndex != [alertView cancelButtonIndex]) && (rowField.text != nil)) {

        [dataArray insertObject:[rowField text] atIndex:dataArray.count];

        [self.rootTableView reloadData];

    }

}

//表格中分组

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView

{

    return 2;

}

//表格中行数

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section

{    

    //表格中行数等于数组内容的个数

    if (section ==0) {

        return dataArray.count;

    }

    if (section ==1)

    {

        return 0;

    }

    else {

        return 0;

    }

}

//分组标题内容设置

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section

{

    //创建字符变量title

    NSString *title = nil;

    switch (section) {

        case 0:

            title = @"表格一";

            break;

        case 1:

            title = @"表格二";

            break;

        default:

            break;

    }

    return title;

}

//显示表格每一行内容

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

{

    //创建一个字符变量,用于取得文本数据类型

    static NSString *CellIndentifier = @"cell";

    //建立表格行数单元格

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIndentifier];

    //当cell为空时

    if (cell == nil) 

    {

        //为cell重新获取表格内容标识符

        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIndentifier] autorelease];

    }

    //分组section为0

    if (indexPath.section ==0) 

    {

        cell.textLabel.text =

        [dataArray objectAtIndex:indexPath.row];

    }

    return cell;

}

//编辑

-(BOOL) tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath

{

    return YES;

}

//调整

-(void) tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath

{

    if (editingStyle == UITableViewCellEditingStyleDelete) 

    {

        //删除

        [dataArray removeObjectAtIndex:indexPath.row];

        [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath]

                         withRowAnimation:UITableViewRowAnimationFade];

    }

}

//上下行移动

-(void) tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)sourceIndexPath toIndexPath:(NSIndexPath *)destinationIndexPath

{

    [dataArray insertObject:[dataArray objectAtIndex:sourceIndexPath.row]

                    atIndex:destinationIndexPath.row];

    [dataArray removeObjectAtIndex:(NSUInteger) sourceIndexPath.row+1];

}

//让表格内容位置调整的方法

-(BOOL) tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath

{

    return YES;

}

- (void)viewDidUnload

{

    [super viewDidUnload];

    // Release any retained subviews of the main view.

}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation

{

    return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);

}

-(void) dealloc

{

    [rootTableView release];

    rootTableView = nil;

    [rowField release];

    [dataArray release];

    dataArray = nil;

    [editButton release];

    editButton = nil;

    [super dealloc];

}

@end

程序运行