Xcode动态添加标签栏图标

Question

我已经阅读了有关在应用程序委托(delegate)和界面构建器中添加标签栏图标的不同答案。我想将它们添加到我的 firtsviewcontroller 中，因为我想从 plist 中读取图标图像名称.
建议这样做:

NSArray *viewControllerArray = nil;
viewController1 = <View Init Code>
viewController2 = <View Init Code>
viewController3 = <View Init Code>

1stNavController = [[UINavigationController alloc] initWithRootViewController:viewController1]; 
UIImage *img = [UIImage imageNamed:@"tab_home"];
[1stNavController .tabBarItem initWithTitle:@"Home" image:img tag:1];

但我不喜欢这样做，因为我认为那不干净。我想做类似于以下的事情，但我不知道为什么它不起作用:

[[self.tabBarController.tabBar.items objectAtIndex:2] setIcon:[UIImage imageNamed:....]];

有什么解决办法吗？

Answer 1

怎么样:

NSArray *viewControllers = self.tabBarController.viewControllers;
((UIViewController*)viewControllers[0]).tabBarItem.image = [UIImage imageNamed:...];
((UIViewController*)viewControllers[1]).tabBarItem.image = [UIImage imageNamed:...];
((UIViewController*)viewControllers[2]).tabBarItem.image = [UIImage imageNamed:...];
((UIViewController*)viewControllers[3]).tabBarItem.image = [UIImage imageNamed:...];
((UIViewController*)viewControllers[4]).tabBarItem.image = [UIImage imageNamed:...];