当你选择你的UITabBarController视图控制器,你提到的方法将被调用,并且最重要的是,目前显示将被传递到你作为参数视图控制器;那么你可以使用下面的代码来获得控制人的类别和标题,包括“多”控制器:
- (void)tabBarController:(UITabBarController *)tabBarController
didSelectViewController:(UIViewController *)viewController
{
NSLog(@"controller class: %@", NSStringFromClass([viewController class]));
NSLog(@"controller title: %@", viewController.title);
}
在一个快速的测试,仅仅通过增加一对夫妇在Xcode的控制器,这就是你在控制台中:
2011-03-28 09:13:21.795 TabTest[39015:207] controller class: UIViewController
2011-03-28 09:13:21.797 TabTest[39015:207] controller title: (null)
2011-03-28 09:13:23.922 TabTest[39015:207] controller class: UITableViewController
2011-03-28 09:13:23.925 TabTest[39015:207] controller title: (null)
2011-03-28 09:13:24.505 TabTest[39015:207] controller class: UITableViewController
2011-03-28 09:13:24.506 TabTest[39015:207] controller title: (null)
2011-03-28 09:13:24.945 TabTest[39015:207] controller class: UIMoreNavigationController
2011-03-28 09:13:24.945 TabTest[39015:207] controller title: More
另一方面,当你选择一个控制器内“更多”列表中,你会不会在你的UITabBarControllerDelegate方法(怪异的,恕我直言)通知。为了帮助您获得通知,当你选择在该列表中的控制器,你可以做到以下几点:
- (void)tabBarController:(UITabBarController *)tabBarController
didSelectViewController:(UIViewController *)viewController
{
NSLog(@"controller class: %@", NSStringFromClass([viewController class]));
NSLog(@"controller title: %@", viewController.title);
if (viewController == tabBarController.moreNavigationController)
{
tabBarController.moreNavigationController.delegate = self;
}
}
- (void)navigationController:(UINavigationController *)navigationController didShowViewController:(UIViewController *)viewController animated:(BOOL)animated
{
if (navigationController == self.tabBarController.moreNavigationController)
{
NSLog(@"more controller class: %@", NSStringFromClass([viewController class]));
NSLog(@"more controller title: %@", viewController.title);
}
}
你的类也应该实现UINavigationControllerDelegate协议,当然。
这是一个示例运行的结果,使用上面的代码和敲击几次在UITabBar和“多”的文章:
2011-03-28 09:27:42.496 TabTest[39113:207] controller class: UIViewController
2011-03-28 09:27:42.498 TabTest[39113:207] controller title: (null)
2011-03-28 09:27:44.306 TabTest[39113:207] controller class: UIMoreNavigationController
2011-03-28 09:27:44.307 TabTest[39113:207] controller title: More
2011-03-28 09:27:44.310 TabTest[39113:207] more controller class: UIMoreListController
2011-03-28 09:27:44.311 TabTest[39113:207] more controller title: More
2011-03-28 09:27:45.632 TabTest[39113:207] more controller class: SecondViewController
2011-03-28 09:27:45.634 TabTest[39113:207] more controller title: (null)
2011-03-28 09:27:47.156 TabTest[39113:207] more controller class: UIMoreListController
2011-03-28 09:27:47.156 TabTest[39113:207] more controller title: More
2011-03-28 09:27:48.581 TabTest[39113:207] controller class: UITableViewController
2011-03-28 09:27:48.582 TabTest[39113:207] controller title: (null)
希望这有助于!