UINavigationController配合Segment

http://www.apkbus.com/android-131344-1-2.html
运行效果图：
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1、RootView 跳到SecondView 

首先我们需要新一个View。新建SecondView，按住Command键然后按N,弹出新建页面，我们新建SecondView 

2、为Button 添加点击事件，实现跳转 
在RootViewController.xib中和RootViewController.h文件建立连接 
在RootViewController.m中实现代码，alloc一个SecondViewController，用pushViewController到navigationController中去，并为 

SecondViewController这是title为    secondView.title =@"Second View"; 默认情况下，titie为下个页面返回按钮的名字。

1. - (IBAction)gotoSecondView:(id)sender {
   
2.     SecondViewController *secondView = [[SecondViewController alloc] init];
   
3.     [self.navigationController pushViewController:secondView animated:YES];
   
4.     secondView.title = @"Second View";
   
5. }

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3.1、添加segmentedController 
     在RootViewController.m的viewDidLoad添加如下代码:

1. NSArray *array = [NSArray arrayWithObjects:@"鸡翅",@"排骨", nil];
   
2.     UISegmentedControl *segmentedController = [[UISegmentedControl alloc] initWithItems:array];
   
3.     segmentedController.segmentedControlStyle = UISegmentedControlSegmentCenter;
   
4. 
   
5.     [segmentedController addTarget:self action:@selector(segmentAction:) forControlEvents:UIControlEventValueChanged];
   
6.     self.navigationItem.titleView = segmentedController;

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3.2[segmentedController addTarget:selfaction:的实现

1. -(void)segmentAction:(id)sender
   
2. {
   
3.     switch ([sender selectedSegmentIndex]) {
   
4.         case 0:
   
5.         {
   
6.             UIAlertView *alter = [[UIAlertView alloc] initWithTitle:@"提示" message:@"你点击了鸡翅" delegate:self  cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];
   
7.             [alter show];
   
8. 
   
9.         }
   
10.         break;
    
11.     case 1:
    
12.         {
    
13.             UIAlertView *alter = [[UIAlertView alloc] initWithTitle:@"提示" message:@"你点击了排骨" delegate:self  cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];
    
14.             [alter show];
    
15.         }
    
16.         break;
    
17.         
    
18.         default:
    
19.             break;
    
20.     }
    
21. }

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4、自定义backBarButtonItem 

左上角的返回上级View的barButtonitem的名字是上级目录的Title，如果title或者适合做button的名字，怎么办呢？我们可以自己定义 
代码如下：

1. UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithTitle:@"根视图" style:UIBarButtonItemStyleDone target:nil action:nil];
   
2.     self.navigationItem.backBarBu

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我是新手，主意添加位置：RootViewControll.m中 
  

1. - (void)viewDidLoad
   
2. {
   
3.     [super viewDidLoad];
   
4.     //add leftButton 添加左按钮
   
5.     UIBarButtonItem *leftButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAction target:self action:@selector(selectLeftAction:)];
   
6.     self.navigationItem.leftBarButtonItem = leftButton;
   
7.     
   
8.     // add rightButton 添加右按钮
   
9.     UIBarButtonItem *rightButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd  target:self action:@selector(selectRightAction:)];
   
10.     self.navigationItem.rightBarButtonItem = rightButton;
    
11.     
    
12.     
    
13.     // add backButton 添加返回按钮
    
14.     UIBarButtonItem *backButton = [[UIBarButtonItem alloc]initWithTitle:@"Root View" style:UIBarButtonItemStyleDone target:self action:nil];
    
15.     self.navigationItem.backBarButtonItem = backButton;
    
16.     
    
17.     //add SegmentedControl on Navigation  添加分段
    
18.     NSArray *array = [[NSArray alloc] initWithObjects:@"one",@"two" ,@"three",nil];
    
19.     UISegmentedControl *segmentdeController = [[UISegmentedControl alloc] initWithItems:array];
    
20.     segmentdeController.segmentedControlStyle = UISegmentedControlSegmentCenter;
    
21.     [segmentdeController addTarget:self action:@selector(segmentAction:) forControlEvents:UIControlEventValueChanged];
    
22.     self.navigationItem.titleView = segmentdeController;
    
23.     
    
24.     
    
25.     
    
26.     
    
27. }

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5、自定义title 
UINavigationController的title可以用别view替代，比如用UIButton UILable等，下面我用UIButton. 
在SecondViewController.m中添加下面如下:

1. - (void)viewDidLoad
   
2. {
   
3.     [super viewDidLoad];
   
4.     UIButton *button = [UIButton buttonWithType: UIButtonTypeRoundedRect];
   
5.     [button setTitle: @"自定义title" forState: UIControlStateNormal];
   
6.     [button sizeToFit];
   
7.     self.navigationItem.titleView = button;}

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