Question

我有一个ViewController，其中tableView已添加为子视图，然后嵌入UINavigationController，然后作为子视图添加到我的RootViewController中我的ViewDidLoad（RootViewConroller）。

frontController = [[UIViewController alloc] init];
frontController.view.backgroundColor = [UIColor blackColor];
[frontController.view addSubview:self.tableView];

... ///

self.navBar = [[UINavigationController alloc] initWithRootViewController:self.frontController];

//finally add the Top UIViewController
 self.contentViewController = self.navBar;


/// Move to new view when cell is touched
     DetailsTwo *my_detailViewController = [[DetailsTwo alloc] initWithNibName:@"DetailsTwo" bundle:[NSBundle mainBundle]];

            [self.navBar pushViewController:my_detailViewController animated:YES];

我的问题：我如何[tableView reloadData]表格视图（当我从navBar的后退按钮返回视图时）？

为什么ViewWillAppear和ViewDidAppear都没有被调用（概念上我错过了什么）？

希望有意义，谢谢你。

Answer 1

@jeffamaphone - 让我走上正轨:(希望这有助于其他人）

//.h
@interface RootViewController : UIViewController <UINavigationControllerDelegate> {
    UINavigationController *navController;
}

//.m
Then implement these two methods:

- (void)navigationController:(UINavigationController *)navigationController 
    willShowViewController:(UIViewController *)viewController animated:(BOOL)animated 
{
    [viewController viewWillAppear:animated];
}

- (void)navigationController:(UINavigationController *)navigationController 
    didShowViewController:(UIViewController *)viewController animated:(BOOL)animated 
{
    [viewController viewDidAppear:animated];
}

*****确保将根视图控制器设置为导航控制器的委托。现在只要从堆栈中推送/弹出控制器，就会调用viewWillAppear / viewDidAppear。

当tableview位于子视图ViewCon的子视图中时，如何重新加载数据

1 个答案: