iphone - RightBarButtonItem 大写文本？

Question

我的导航栏上有一个简单的编辑按钮，一旦点击变成完成，我正在尝试将“编辑”和“完成”上的文本更改为大写文本，这可能吗？有人知道我可以查看的教程吗？

self.navigationItem.rightBarButtonItem = self.editButtonItem;

谢谢。

Answer 1

UIBarButtonItem在 .h 文件中创建 btnEdit 对象，如下所示：

UIBarButtonItem *btnEdit;

然后在.m文件中写下这段代码：

- (void)viewWillAppear:(BOOL)animated{
    btnEdit = [[UIBarButtonItem alloc]init];
    btnEdit.target = self;
    btnEdit.action = @selector(btnEdit_Click:);
    btnEdit.title = @"EDIT";
    self.navigationController.topViewController.navigationItem.rightBarButtonItem = btnEdit;
    btnEdit.enabled=TRUE;
 }

- (IBAction)btnEdit_Click:(id)sender
{
    if ([btnEdit.title isEqualToString:@"EDIT"]) 
    {
        [btnEdit setTitle:@"DONE"]; 
    }
    else 
    {
        [btnEdit setTitle:@"EDIT"];   
    }
}

Answer 2

UIBarButtonItem *newButton = [[UIBarButtonItem alloc] initWithTitle: @"EDIT" style: UIBarButtonItemStyleBordered target: nil action: @selector(editPressed:self)];

[[self navigationItem] setRightBarButtonItem: newButton animated:NO];

newBackButton = nil;

进而：

- (void)editPressed:(id)sender
{
     // Your code
}