RightBarButtonItem大寫字母文本？

Question

我的導航欄上有一個簡單的編輯按鈕，一旦點擊就轉到完成，我試圖將「編輯」和「完成」上的文本更改爲大寫文本，這可能嗎？有人知道我可以查看一個教程嗎？

self.navigationItem.rightBarButtonItem = self.editButtonItem; 

謝謝。

Answer 1

在h文件創建的UIBarButtonItem btnEdit對象像波紋管：

UIBarButtonItem *btnEdit; 

，然後在.m文件寫這樣的代碼：

- (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; 

然後：

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