Question

我正在尝试在UINavigationController内显示UIPopoverController，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;
}

我也尝试在- (void)viewDidLoad

中进行设置

- (void)viewDidLoad
{
[super viewDidLoad];

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

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

但在任何情况下标题都无效，我还在做错吗？

Answer 1

编辑在UINavigationController广告中添加您的SearchViewController控制器，在UIPopoverController中，如下所示：

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";
}

参考setting-the-title-of-a-uipopovercontroller

Answer 2

尝试使用这种方式显示弹出控制器

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

Answer 3

你可以试试这个：

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

UINavigationController *_nav = [[[UINavigationController alloc] initWithRoot.....:searchView] autorelease];

然后将_nav放入popover。

每个UIViewController都有自己的标签栏和导航，但你应该初始化它们。然后你可以正确地使用它们。

UIPopoverController中的UINavigationController：设置标题

3 个答案: