以編程方式設置自定義UITabBarItem？

Question

在iOS中，TabBarController中的TabBar屬性是隻讀的。我如何將自定義項目與特定的視圖控制器相關聯？如何訪問tabBar內的UITabBarItems？

像這樣

CustomView *custom = [[CustomView alloc] init]; 
UITabBarItem *customTab = [[UITabBarItem alloc] initWithTitle:@"Custom" image:[UIImage imageNamed:@"custom.png"] tag:0]; 
SecondView *second = [[SecondView alloc] init]; 
UITabBarItem *secondTab = [[UITabBarItem alloc] initWithTitle:@"Next" image:[UIImage imageNamed:@"next.png"] tag:1]; 
NSArray *views = [NSArray arrayWithObjects:custom,second,nil]; 
[tabBarController setViewControllers:views]; 
//how do I set the individual TabBarItems (customTab,secondTab) to be associated 
//with the views in question? tabBarController.tabBar is read only 

Answer 1

內每個視圖控制器，你可以設置一個tabBarItem屬性。如果視圖控制器屬於UITabBarViewController，則標籤欄上的相關項目將相應更新。

像這樣的事情

-(void)viewDidLoad { 
    [super viewDidLoad]; 
    UITabBarItem *tbi = [[UITabBarItem alloc] initWithTitle:yourTitle image:yourIcon tag:yourTag]; 
    [self setTabBarItem:tbi] 
    [tbi release]; 
} 

你是不是僅限於viewDidLoad方法執行此操作，效果顯着。