iphone - 是否可以将标题添加到工具栏按钮，声明为 UIBarButtonSystemItem

Question

我想在我的导航工具栏中设置一些按钮，并且为了让用户不会对每个按钮的作用感到困惑，我想为每个按钮添加标题，显示在它下面。是否有可能做到这一点？

按钮声明：

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

``...

[self setToolbarItems:[NSArray arrayWithObjects: flexible,
                           changeFiltersButton, flexible, flexible,
                           refreshFiltersList, flexible, flexible,
                           more, flexible, nil]];

Answer 1

使用带有名称的图像，例如下面的示例

    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];