如何在ios7中添加多个UIBarButtonItem到rightBarButtonItem？

Question

我有一个现有的代码，这是在iOS6的工作的罚款。但在ios7中，最左边的项目（“刷新按钮”）未显示与其他两个UIBarButtonItem对齐。其显示有点下降。这里是iOS6的代码。我需要做什么改变才能在iOS7中工作。

// create an array for the buttons 
NSMutableArray* buttons = [[NSMutableArray alloc] initWithCapacity:3]; 

// create a standard save button 
UIBarButtonItem* refreshButton = [[UIBarButtonItem alloc] 
            initWithBarButtonSystemItem:UIBarButtonSystemItemRefresh 
            target:self 
            action:@selector(refreshButtonClicked:)]; 

refreshButton.style=UIBarButtonItemStyleBordered; 
//self.navigationItem.rightBarButtonItem = refreshButton; 

[buttons addObject:refreshButton]; 
[refreshButton release]; 

// create a spacer between the buttons 
UIBarButtonItem *spacer = [[UIBarButtonItem alloc] 
          initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace 
          target:nil 
          action:nil]; 

[buttons addObject:spacer]; 
[spacer release]; 

// create a standard delete button with the trash icon 
UIButton *button = [UIButton buttonWithType:UIButtonTypeInfoDark]; 
[button setFrame:CGRectMake(0, 0, 30, 30)]; 

[button addTarget:self action:@selector(InfoButtonTapped:) forControlEvents:UIControlEventTouchUpInside]; 

infoItem = [[UIBarButtonItem alloc] initWithCustomView:button]; 
[buttons addObject:infoItem]; 

// put the buttons in the toolbar and release them 
[toolbar setItems:buttons animated:NO]; 
[buttons release]; 

// place the toolbar into the navigation bar 
self.navigationItem.rightBarButtonItem = [[[UIBarButtonItem alloc] 
              initWithCustomView:toolbar]autorelease]; 

感谢

Answer 1

尝试：

self.navigationItem.rightBarButtonItems = buttons;