iOS：实现表格填充和选择操作

            //
            //
              main.m

            //
              Hello

            //
            //
              Created by lishujun on 14-8-28.

            //
              Copyright (c) 2014年 lishujun. All rights reserved.

            //

            #import <UIKit/UIKit.h>

// 视图控制器对象@interface HelloWorldViewController : UIViewController<UITableViewDataSource, UITableViewDelegate>
{
    NSArray *array;
    UITableView *tableView;
    //不用@property声明，就不能用self进行引用? 有什么差异，我得弄清楚}
@end@implementation HelloWorldViewController

-(HelloWorldViewController *) init
{
    array = [[NSArray alloc]initWithObjects:@"oops", @"hello", @"world", nil];
    return self;
}

-(void) loadView
{
    // 创建视图对象
    UIView *contentView = [[UIView alloc]initWithFrame:[[UIScreen mainScreen] applicationFrame]];
    contentView.backgroundColor = [UIColor lightGrayColor];
    self.view = contentView;
    
    // 创建tableView
    tableView = [[UITableView alloc]initWithFrame:[[UIScreen mainScreen] applicationFrame]];
    [tableView setDataSource:self];
    [tableView setDelegate:self];
    
    // tableView加入到内容视图    [contentView addSubview:tableView];
}

// --------DataSource接口必须实现的方法，用于填充表格-----------
-(NSInteger) numberOfSectionsInTableView:(UITableView *)tableView
{
    return1; //设定列表分区个数}

-(NSInteger) tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return [array count]; //设定列表长度}

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    // 生成列表单元（尽可能复用已有单元）static NSString *simpleTableIdentifer = @"SimpleTableIdentifer";
    
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifer];
    if (cell == nil) {
        cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifer];
    }
    cell.textLabel.text = array[indexPath.row];
    return cell;
}

// ----------实现Delegate接口的方法,用于操作---------------

-(NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    // 行选中之前的事件，下面代码实现是实现取消第一行的选择，即不允许选择if(indexPath.row == 0)
    {
        return nil;
    }
    else
    {
        return indexPath;
    }
}

-(void) tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    //行选中事件
    NSString *rowValue = array[indexPath.row];
    [tableView deselectRowAtIndexPath:indexPath animated:YES]; //取消选中状态
    NSLog(@"%@", rowValue);
    
}
@end// 委托对象@interface HelloWorldAppDelegate : NSObject <UIApplicationDelegate>
{
    IBOutlet UIWindow *window;
}

@property (nonatomic, retain) UIWindow *window;
@end@implementation HelloWorldAppDelegate
@synthesize window;

-(void) applicationDidFinishLaunching:(UIApplication *)application
{
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen]bounds]];
    HelloWorldViewController *viewController = [[HelloWorldViewController alloc]init];
    self.window.rootViewController = viewController;
    [self.window makeKeyAndVisible];
}

@end// 程序入口int main(int argc, char * argv[])
{
    @autoreleasepool {
        return UIApplicationMain(argc, argv, nil, @"HelloWorldAppDelegate");
    }
}