我目前正在學習iOS開發,而且我很困惑內部如何設置標題。在TabBarController中使用NavigationController時的標題
我在爲iPad基於窗口的模板下面的代碼,我做的一切從頭開始,而不界面生成器:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
UISplitViewController *svc = [[UISplitViewController alloc] init];
UINavigationController *leftNav = [[UINavigationController alloc] init];
UIViewController *leftView = [[LeftViewController alloc] init];
[leftNav pushViewController:leftView animated:NO];
[leftView release];
UINavigationController *rightNav = [[UINavigationController alloc] init];
UIViewController *rightView = [[RightViewController alloc] init];
[rightNav pushViewController:rightView animated:NO];
[rightView release];
UITabBarController *tbc = [[UITabBarController alloc] init];
tbc.viewControllers = [NSArray arrayWithObjects:leftNav, nil];
[leftNav release];
svc.viewControllers = [NSArray arrayWithObjects:tbc, rightNav, nil];
[tbc release]; [rightNav release];
self.window.rootViewController = svc;
[self.window makeKeyAndVisible];
return YES;
}
我想擁有的TabBarItem自定義簡短標題LeftViewController和頂部的NavigationController欄的長標題。嘗試幾次後,我發現下面是實際工作(代碼爲LeftViewController:viewDidLoad中):
self.title = @"Long title for navigation controller";
self.navigationController.title = @"Short title";
但是,我不知道爲什麼設置navigationController.title設置標題爲TabBarItem。我試過「self.tabBarItem.title = @」Short title「,而不是它的工作,這更奇怪。
有人可以解釋爲什麼這個工作,以及如何設置標題直接和正確,因爲這真的不右看看我,我覺得我失去了一些重要的事情。謝謝!:)
我才發現這是確認一個問題你剛纔說的: http://stackoverflow.com/questions/717844/self-tabbaritem-title-not-working 事實上self.title用於兩個self.navigationItem.title和tabBarItem.title。有趣的是,據其中一位評論員稱,tabBarItem.title無法更改。謝謝! – Svilen