IPhone之navigationItem

IPhone之navigationItem

注：

使用其navigationItem时，首先要确保UINavigationController 视图已经加载到ViewController中。

其代码为：

 

[[UINavigationController alloc] initWithRootViewController:viewController];

 

 

1、添加按钮

 

UIBarButtonItem *loginBut =[[UIBarButtonItem alloc] initWithTitle:@"Login" style:UIBarButtonItemStylePlain target:self action:@selector(login)];   
    self.navigationItem.rightBarButtonItem = loginBut;   
    [loginBut release];
   
    UIBarButtonItem *createBut =[[UIBarButtonItem alloc] initWithTitle:@"NEW" style:UIBarButtonItemStylePlain target:self action:@selector(creatUser)];   
    self.navigationItem.leftBarButtonItem = createBut;   
    [createBut release];

 

 

2、添加segmentedControl

 

UISegmentedControl *m_segmentedControl = [[UISegmentedControl alloc] initWithItems:
                                            [NSArray arrayWithObjects:
                                            [UIImage imageNamed:@"up.png"],
                                            [UIImage imageNamed:@"down.png"],
                                            nil]];
    [m_segmentedControl addTarget:self action:@selector(segmentAction:) forControlEvents:UIControlEventValueChanged];
    m_segmentedControl.frame = CGRectMake(0, 0, 90, 30);
    m_segmentedControl.segmentedControlStyle = UISegmentedControlStyleBar;
    m_segmentedControl.momentary = YES;
   
    UIBarButtonItem *segmentBarItem = [[UIBarButtonItem alloc] initWithCustomView:m_segmentedControl];
    [m_segmentedControl release];
   
    self.navigationItem.rightBarButtonItem = segmentBarItem;
    [segmentBarItem release];

 

 

3、设置标题

 

 self.navigationItem.title = @"详细内容";

 

 

4、设置返回按钮

 

self.navigationItem.backBarButtonItem = [[[UIBarButtonItem alloc] initWithTitle:@"主菜单" style:UIBarButtonItemStylePlain target:nil action:nil] autorelease];