Iphone 是否可以将标题添加到工具栏按钮（声明为UIBarButtonSystemItem）

我想在我的导航工具栏中设置一些按钮，并且为了用户不会对每个按钮的功能感到困惑，我想为每个按钮添加标题，显示在它下面。有可能这样做吗

按钮声明：

UIBarButtonItem *changeFiltersButton = [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemRefresh target:self action:@selector(refreshButton)] autorelease];

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使用名称为的图像，如休耕示例

    NSMutableArray *toolBaritems = [[NSMutableArray alloc] init];

    [toolBaritems addObject:[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil]];
    [toolBaritems addObject:[[UIBarButtonItem alloc]initWithImage:[UIImage imageNamed:@"img.png"] style:UIBarButtonItemStylePlain target:self action:@selector(refresh)]];
    [toolBaritems addObject:[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil]];
    [toolBaritems addObject:[[UIBarButtonItem alloc]initWithImage:[UIImage imageNamed:@"img2.png"] style:UIBarButtonItemStylePlain target:self action:@selector(change)]];

    [toolbar setItems:toolBaritems animated:NO];

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非常感谢。所以我应该简单地创建一个包含文本的图像？这是有道理的…但如果不编辑整个图像，我将无法编辑标题：(

    NSMutableArray *toolBaritems = [[NSMutableArray alloc] init];

    [toolBaritems addObject:[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil]];
    [toolBaritems addObject:[[UIBarButtonItem alloc]initWithImage:[UIImage imageNamed:@"img.png"] style:UIBarButtonItemStylePlain target:self action:@selector(refresh)]];
    [toolBaritems addObject:[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil]];
    [toolBaritems addObject:[[UIBarButtonItem alloc]initWithImage:[UIImage imageNamed:@"img2.png"] style:UIBarButtonItemStylePlain target:self action:@selector(change)]];

    [toolbar setItems:toolBaritems animated:NO];