UIToolBar在loadView中添加的項目不顯示

Question

我有一個UIViewController以編程方式創建。我在loadView中包含下面的代碼。顯示工具欄，但不是我添加的按鈕。任何幫助，將不勝感激請。

[self.navigationController setToolbarHidden:NO animated:NO]; 

    UIBarButtonItem *actionB = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAction target:self action:@selector(actionBTapped:)]; 
    [self.navigationController.toolbar setItems:[NSArray arrayWithObject:actionB] animated:NO]; 
    [actionB release]; 

Answer 1

你想設置的UIViewController中本身的項目，而不是它的導航控制器：

self.toolbarItems = [NSArray arrayWithObject:actionB]; 

Answer 2

試試這個：

NSMutableArray *items = [[[NSMutableArray alloc] init] autorelease]; 
UIBarButtonItem *labelButton = [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAction target:nil action:nil] autorelease]; 
[items addObject:labelButton]; 
[items addObject:[[[UIBarButtonItem alloc] initWithTitle:@"YoutTitle" style:UIBarButtonItemStyleDone target:self action:@selector(actionBTapped:)] autorelease]]; 
[self.navigationController.toolbar setItems:items animated:NO];