iphone练习之TableView

1、第一个要实现的效果如图：

新建一个基于Sigle view Application的项目，拖一个Table View到View上，实现Outlets：dataSource、delegate到File's Owner。

实现代码：

#import <UIKit/UIKit.h>
//为了填充表格，必须使用一个协议,并且实现协议中的两个方法
@interface ViewController : UIViewController<UITableViewDataSource>

@end

#import "ViewController.h"

@implementation ViewController
NSMutableArray *listOfMovies;
//设置table中的信息，行的单元格在索引路径
-(UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
    
    static NSString *CellIdentifier=@"Cell";
    //设置重复用的电池
    UITableViewCell *cell=[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if(cell==nil){
        cell=[[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier]autorelease];
        
    }
    //设置一行cell显示的值
    NSString *cellValue=[listOfMovies objectAtIndex:indexPath.row];
    cell.textLabel.text=cellValue;
    //添加图片
    UIImage *image=[UIImage imageNamed:@"ic_ic.jpg"];
    cell.imageView.image=image;
    return cell;
}
//节的行数
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
    return [listOfMovies count];
}
-(NSString*)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section{
    //显示页眉
    return @"Movie List";
}
-(NSString*)tableView:(UITableView *)tableView titleForFooterInSection:(NSInteger)section{
    //显示页脚
    return @"by Denzel Washington";
}
//选择在指数径行
-(void)tableView:(UITableView*)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
    //得到选中该行的内容
    NSString *movieSelected=[listOfMovies objectAtIndex:indexPath.row];
    //封装成msg
    NSString *msg=[NSString stringWithFormat:@"You have selected %@",movieSelected];
    //用警告框弹出
    UIAlertView *alert=[[UIAlertView alloc]initWithTitle:@"Movie selected" message:msg delegate:self cancelButtonTitle:@"ok" otherButtonTitles: nil];
    //显示弹出对话框
    [alert show];
    //释放alert
    [alert release];
}
//缩进水平排在索引路径
-(NSInteger)tableView:(UITableView *)tableView indentationLevelForRowAtIndexPath:(NSIndexPath *)indexPath{
    return [indexPath row]%2;
}
//在索引路径为行高度
-(CGFloat)tableView:(UITableView*)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
    return 70;
}
- (void)viewDidLoad
{
    listOfMovies=[[NSMutableArray alloc]init];
    [listOfMovies addObject:@"Training Day"];
    [listOfMovies addObject:@"Remember the Titans"];
    [listOfMovies addObject:@"John Q."]; 
    [listOfMovies addObject:@"The Bone Collector"];
    [listOfMovies addObject:@"Ricochet"]; 
    [listOfMovies addObject:@"The Siege"]; 
    [listOfMovies addObject:@"Malcolm X"];
    [listOfMovies addObject:@"Antwone Fisher"]; 
    [listOfMovies addObject:@"Courage Under Fire"];
    [listOfMovies addObject:@"He Got Game"]; 
    [listOfMovies addObject:@"The Pelican Brief"]; 
    [listOfMovies addObject:@"Glory"];
    [listOfMovies addObject:@"The Preacher’s Wife"];
    [super viewDidLoad];
	// Do any additional setup after loading the view, typically from a nib.
}
-(void)dealloc{
    [listOfMovies release];
    [super dealloc];
}

我只给出相应的方法实现！

2、第二种实现效果

新建一个基于Master-Detail Application；在文件里新建一个Property List类型的文件名为Movies.plist,内容如下：

实现代码：

#import <UIKit/UIKit.h>

@class DetailViewController;

@interface MasterViewController : UITableViewController{
    NSDictionary *movieTitles;
    NSArray *years;
}
@property (nonatomic,retain)NSDictionary *movieTitles;
@property (nonatomic,retain)NSArray *years;
@property (strong, nonatomic) DetailViewController *detailViewController;

@end

#import "MasterViewController.h"
#import "DetailViewController.h"

@implementation MasterViewController
@synthesize movieTitles,years;

- (void)dealloc
{
    [_detailViewController release];
    [movieTitles release];
    [years release];
    [super dealloc];
}

- (void)viewDidLoad
{
    //文件名字及类型
    NSString *path=[[NSBundle mainBundle]pathForResource:@"Movies" ofType:@"plist"];
    //获取内容为字典类型
    NSDictionary *dic=[[NSDictionary alloc]initWithContentsOfFile:path];
    //把所有内容赋给movieTitles
    self.movieTitles=dic;
    [dic release];
    /*获取所有的年份，并且升序键
     2000,
    2001,
    2002,
    2004,
    2006,
    2007,
    2008*/    
    NSArray *array=[[self.movieTitles allKeys]sortedArrayUsingSelector:@selector(compare:)];
    //赋给数组年
    self.years=array;    
    [super viewDidLoad];
	// Do any additional setup after loading the view, typically from a nib.
}
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{
    //返回多少总行
    return [self.years count];
}
//每节的行数
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
    //获取每一年
    NSString *year=[self.years objectAtIndex:section];
    //获取每个年里的值，得到一个数组
    NSArray *movieSection=[self.movieTitles objectForKey:year];
    //返回这个键总共有多少值
    return [movieSection count];
}
//添写每一节的内容
-(UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
    
    static NSString *CellIdentifier = @"Cell";
    
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];            
    if(cell==nil){
        cell=[[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier]autorelease];
    }
    //获取每一年
    NSString *year=[self.years objectAtIndex:[indexPath section]];
   //获取每年里的值
    NSArray *movieSection=[self.movieTitles objectForKey:year];
   //设置每一节里的内容
    cell.textLabel.text=[movieSection objectAtIndex:[indexPath row]];
    return cell;
}
//年的页眉
-(NSString*)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section{
    NSString *year=[self.years objectAtIndex:section];
    return year;
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    if (!self.detailViewController) {
        self.detailViewController = [[[DetailViewController alloc] initWithNibName:@"DetailViewController" bundle:nil] autorelease];
    }
    [self.navigationController pushViewController:self.detailViewController animated:YES];
}

打开MasterViewController.xib文件把Table View的属性Style改成Grouped,并在MasterViewController.m添加一个索引方法如下代码：

//有时候列表过长，添加此方法实现索引，按每一年索引
-(NSArray*)sectionIndexTitlesForTableView:(UITableView *)tableView{
    return years;
}

实现的效果如下图：

下面是切换到另一个节目，并把电影的名字带回去：

首先在DetailViewController.m文件中添加如入代码：

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSString *year = [self.years objectAtIndex:[indexPath section]];
    NSArray *movieSection = [self.movieTitles objectForKey:year];
    NSString *movieTitle = [movieSection objectAtIndex:[indexPath row]];
    NSString *message = [[NSString alloc]initWithFormat:@"%@", movieTitle];
    
    if (!self.detailViewController) {
        self.detailViewController = [[[DetailViewController alloc] initWithNibName:@"DetailViewController" bundle:nil] autorelease];
    }
    self.detailViewController.movieSelected=message;
    [self.navigationController pushViewController:self.detailViewController animated:YES];
}

在DetailViewController.xib文件中添加一个label;

在DetailViewController.h文件中添加如下信息：

#import <UIKit/UIKit.h>

@interface DetailViewController : UIViewController{
    NSString *movieSelected;//电影的名字
    IBOutlet UILabel *label;
}

@property (strong, nonatomic) id detailItem;

@property (strong, nonatomic) IBOutlet UILabel *detailDescriptionLabel;
@property (nonatomic,retain)NSString *movieSelected;

@property (nonatomic,retain)IBOutlet UILabel *label;

@end

在DetailViewController.m文件中添加：

@interface DetailViewController ()
- (void)configureView;
@end

@implementation DetailViewController

@synthesize detailItem = _detailItem;
@synthesize detailDescriptionLabel = _detailDescriptionLabel;
@synthesize movieSelected,label;
- (void)dealloc
{
    [_detailItem release];
    [_detailDescriptionLabel release];
    [movieSelected release];
    [super dealloc];
}

- (void)viewDidLoad
{
    self.navigationItem.title = movieSelected;
    label.text=movieSelected;
    [super viewDidLoad];
	// Do any additional setup after loading the view, typically from a nib.
    [self configureView];
}

实现效果图：

本博客是我自己的练习，有好多地方没有讲太清楚，还请谅解！