如何在UINavigation欄中添加動態/多按鈕？

Question

如何在UINavigatation Bar中添加動態/多按鈕？

如下圖所示：

Answer 1

我不支持iOS5，但是在iOS4中，您只能這樣做（甚至制作自己的）導航。 使其具有自定義功能。

Answer 2

您可以使用一個UIToolBar，然后保留多個UIBarButtonItem對象。

- (void)viewDidLoad {
    [super viewDidLoad];




    // create a toolbar to have two buttons in the right

        UIToolbar* tools = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 133, 44.01)];

        // create the array to hold the buttons, which then gets added to the toolbar
        NSMutableArray* buttons = [[NSMutableArray alloc] initWithCapacity:2];

        // create a standard "add" button
        UIBarButtonItem* bi = [[UIBarButtonItem alloc]
                               initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(add)];
        bi.style = UIBarButtonItemStyleBordered;
        [buttons addObject:bi];
        [bi release];


        // create a standard "refresh" button
        bi = [[UIBarButtonItem alloc]
              initWithBarButtonSystemItem:UIBarButtonSystemItemRefresh target:self action:@selector(refresh)];
        bi.style = UIBarButtonItemStyleBordered;
        [buttons addObject:bi];
        [bi release];

        // stick the buttons in the toolbar
        [tools setItems:buttons animated:NO];

        [buttons release];

        // and put the toolbar in the nav bar
        self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:tools];
        [tools release];

}

-(void)add{
    NSLog(@"Code to add the row in tableview");
}

-(void)refresh {
    NSLog(@"code to refresh the tableView");
}