如何將兩個UIBarButtonItems添加到UINavigationItem？

Question

我想要兩個rightBarButtonItem在我的UINavigationBar上。我怎樣才能做到這一點？

Answer 1

您可以使用帶有兩個按鈕的UISegmentedControl，並將其配置爲momentary屬性設置爲YES。

這是郵件應用程序用於轉到下一個/上一個消息的內容。

更新

爲了分配UISegmentedControl] 1爲右鍵，你必須把它包裝一個的UIBarButtonItem（從NavBar sample application採取的示例代碼）中：

- (void)viewDidLoad 
{ 
    // "Segmented" control to the right 
    UISegmentedControl *segmentedControl = [[UISegmentedControl alloc] initWithItems: 
               [NSArray arrayWithObjects: 
                [UIImage imageNamed:@"up.png"], 
                [UIImage imageNamed:@"down.png"], 
               nil]]; 
    [segmentedControl addTarget:self action:@selector(segmentAction:) forControlEvents:UIControlEventValueChanged]; 
    segmentedControl.frame = CGRectMake(0, 0, 90, kCustomButtonHeight); 
    segmentedControl.segmentedControlStyle = UISegmentedControlStyleBar; 
    segmentedControl.momentary = YES; 

    UIBarButtonItem *segmentBarItem = [[UIBarButtonItem alloc] initWithCustomView:segmentedControl]; 
    [segmentedControl release]; 

    self.navigationItem.rightBarButtonItem = segmentBarItem; 
    [segmentBarItem release]; 
}