iphone - UIPopoverController 中的 UINavigationController : setting the title

Question

我正在尝试显示 UINavigationController在 UIPopoverController 内，但由于某种原因，我无法设置标题。

SearchViewController *searchView = [[[SearchViewController alloc] init] autorelease];

UIPopoverController *popover = [[UIPopoverController alloc] initWithContentViewController:searchView];
[popover presentPopoverFromBarButtonItem:_searchBarButton permittedArrowDirections:UIPopoverArrowDirectionUp animated:YES];

我尝试在 - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil 中更改它

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
    // Change the title
    UILabel *label = [[[UILabel alloc] initWithFrame:CGRectZero] autorelease];
    label.backgroundColor = [UIColor clearColor];
    label.font = [UIFont boldSystemFontOfSize:20.0];
    label.shadowColor = [UIColor colorWithWhite:0.0 alpha:0.5];
    label.textAlignment = UITextAlignmentCenter;
    label.textColor = [UIColor whiteColor];
    label.text = @"Print / Email";
    [label sizeToFit];
    self.navigationItem.titleView = label;
}
return self;
}

我也尝试将它设置在 - (void)viewDidLoad

- (void)viewDidLoad
{
[super viewDidLoad];

self.contentSizeForViewInPopover = CGSizeMake(320.0, 250.0f);

self.navigationItem.title = @"Print / Email";
self.title = @"Print / Email";
}

但是在任何情况下标题都不起作用，我还是做错了什么吗？

Answer 1

编辑 在 UINavigationController 广告中添加您的 SearchViewController Controller ，在 UIPopoverController 中像这样:

SearchViewController *searchView = [[[SearchViewController alloc] init] autorelease];
UINavigationController *navController = [[UINavigationController alloc]initWithRootViewController:searchView];
UIPopoverController *popover = [[UIPopoverController alloc] initWithContentViewController:navController];
[popover presentPopoverFromBarButtonItem:_searchBarButton permittedArrowDirections:UIPopoverArrowDirectionUp animated:YES];

现在在 SearchViewController 的 viewDidLoad 方法中:

- (void)viewDidLoad
{
  [super viewDidLoad];
  self.title = @"Print / Email";
}

引用 setting-the-title-of-a-uipopovercontroller