iphone練習之TableView

1、第一個要實現的效果如圖：

新建一個基於Sigle view Application的項目，拖一個Table View到View上，實現Outlets：dataSource、delegate到File's Owner。

實現代碼：

#import <UIKit/UIKit.h>
//爲了填充表格，必須使用一個協議,並且實現協議中的兩個方法
@interface ViewController : UIViewController<UITableViewDataSource>

@end

#import "ViewController.h"

@implementation ViewController
NSMutableArray *listOfMovies;
//設置table中的信息，行的單元格在索引路徑
-(UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{

    static NSString *CellIdentifier=@"Cell";
    //設置重複用的電池
    UITableViewCell *cell=[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if(cell==nil){
        cell=[[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier]autorelease];

    }
    //設置一行cell顯示的值
    NSString *cellValue=[listOfMovies objectAtIndex:indexPath.row];
    cell.textLabel.text=cellValue;
    //添加圖片
    UIImage *image=[UIImage imageNamed:@"ic_ic.jpg"];
    cell.imageView.image=image;
    return cell;
}
//節的行數
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
    return [listOfMovies count];
}
-(NSString*)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section{
    //顯示頁眉
    return @"Movie List";
}
-(NSString*)tableView:(UITableView *)tableView titleForFooterInSection:(NSInteger)section{
    //顯示頁腳
    return @"by Denzel Washington";
}
//選擇在指數徑行
-(void)tableView:(UITableView*)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
    //得到選中該行的內容
    NSString *movieSelected=[listOfMovies objectAtIndex:indexPath.row];
    //封裝成msg
    NSString *msg=[NSString stringWithFormat:@"You have selected %@",movieSelected];
    //用警告框彈出
    UIAlertView *alert=[[UIAlertView alloc]initWithTitle:@"Movie selected" message:msg delegate:self cancelButtonTitle:@"ok" otherButtonTitles: nil];
    //顯示彈出對話框
    [alert show];
    //釋放alert
    [alert release];
}
//縮進水平排在索引路徑
-(NSInteger)tableView:(UITableView *)tableView indentationLevelForRowAtIndexPath:(NSIndexPath *)indexPath{
    return [indexPath row]%2;
}
//在索引路徑爲行高度
-(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];
}

我只給出相應的方法實現！

2、第二種實現效果

新建一個基於Master-Detail Application；在文件裏新建一個Property List類型的文件名爲Movies.plist,內容如下：

實現代碼：

#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
{
    //文件名字及類型
    NSString *path=[[NSBundle mainBundle]pathForResource:@"Movies" ofType:@"plist"];
    //獲取內容爲字典類型
    NSDictionary *dic=[[NSDictionary alloc]initWithContentsOfFile:path];
    //把所有內容賦給movieTitles
    self.movieTitles=dic;
    [dic release];
    /*獲取所有的年份，並且升序鍵
     2000,
    2001,
    2002,
    2004,
    2006,
    2007,
    2008*/
    NSArray *array=[[self.movieTitles allKeys]sortedArrayUsingSelector:@selector(compare:)];
    //賦給數組年
    self.years=array;
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{
    //返回多少總行
    return [self.years count];
}
//每節的行數
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
    //獲取每一年
    NSString *year=[self.years objectAtIndex:section];
    //獲取每個年裏的值，得到一個數組
    NSArray *movieSection=[self.movieTitles objectForKey:year];
    //返回這個鍵總共有多少值
    return [movieSection count];
}
//添寫每一節的內容
-(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];
    }
    //獲取每一年
    NSString *year=[self.years objectAtIndex:[indexPath section]];
   //獲取每年裏的值
    NSArray *movieSection=[self.movieTitles objectForKey:year];
   //設置每一節裏的內容
    cell.textLabel.text=[movieSection objectAtIndex:[indexPath row]];
    return cell;
}
//年的頁眉
-(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];
}

打開MasterViewController.xib文件把Table View的屬性Style改成Grouped,並在MasterViewController.m添加一個索引方法如下代碼：

//有時候列表過長，添加此方法實現索引，按每一年索引
-(NSArray*)sectionIndexTitlesForTableView:(UITableView *)tableView{
    return years;
}

實現的效果如下圖：

下面是切換到另一個節目，並把電影的名字帶回去：

首先在DetailViewController.m文件中添加如入代碼：

- (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文件中添加一個label;

在DetailViewController.h文件中添加如下信息：

#import <UIKit/UIKit.h>

@interface DetailViewController : UIViewController{
    NSString *movieSelected;//電影的名字
    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];
}