关于iPhone：ViewDid出现无法正常工作的Xcode

ViewDid appear not working xcode

海，
我创建了一个基于选项卡的iRestaura项目。我使用5个标签栏项目。标签栏名称之一是客户。当我点击客户时，将以编程方式使用3个viewcontroller创建另一个选项卡。当我使用视图didload方法时，tabbarcontroller创建成功。但是，当我使用视图didAppear时，则不会创建选项卡控制器。在这两种情况下，以编程方式创建的其他三个viewcontroller，都没有出现视图不起作用。但是所有情况下我都需要使用viewDidAppear方法。
请任何人都可以帮助我...
在下面给出了不起作用的viewDidAppear方法.....

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- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
UITabBarController *tabBarController1=[[UITabBarController alloc] init];

CustomerListViewController *customerListViewController=[[CustomerListViewController alloc] init];
customerListViewController.title=@"Customer List";
UIImage *anImage1 = [UIImage imageNamed:@"customer.png"];
UITabBarItem *theItem1 = [[UITabBarItem alloc] initWithTitle:@"CustomerList" image:anImage1 tag:0];
customerListViewController.tabBarItem = theItem1;

SelectedCustomerViewController *selectedCustomerViewController= [[SelectedCustomerViewController alloc] init];
selectedCustomerViewController.title=@"Selected Customer";
UIImage *anImage3 = [UIImage imageNamed:@"selectedCustomer.png"];
UITabBarItem *theItem = [[UITabBarItem alloc] initWithTitle:@"Selected Customer" image:anImage3 tag:1];
selectedCustomerViewController.tabBarItem = theItem;

InvoiceListViewController *invoiceListViewController=[[InvoiceListViewController alloc] init];
invoiceListViewController.title=@"Invoice List";
UIImage *anImage2 = [UIImage imageNamed:@"invoiceNo.png"];
UITabBarItem *theItem2 = [[UITabBarItem alloc] initWithTitle:@"Invoice List" image:anImage2 tag:2];
invoiceListViewController.tabBarItem = theItem2;

NSMutableArray *controllers=[[NSMutableArray alloc] init];
[controllers addObject:customerListViewController];
// [controllers1 addObject:vc1];
[controllers addObject:selectedCustomerViewController];

[controllers addObject:invoiceListViewController];
///[controllers1 addObject:vc4];
tabBarController1.viewControllers=controllers;

[self.navigationController setNavigationBarHidden:YES animated:YES];
[[self view] addSubview:tabBarController1.view];
for (int t=0; t<[controllers count]; t++)
{
NSLog(@"controller%@",[controllers objectAtIndex:t]);
}

}

尝试一下：

首先在Tabbar控制器.m文件上使用以下功能：

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

并在Tabbar控制器.m文件的" viewDidLoad"功能中，使用" localNavigationController.delegate = self;"。如以下给定示例中所使用。

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UserListing *nearBy = [[UserListing alloc] init];
nearBy.tabBarItem.image = [UIImage imageNamed:@"icoTabNearby.png"];
nearBy.tabBarItem.title = @"Nearby";
localNavigationController = [[UINavigationController alloc] initWithRootViewController:nearBy];
localNavigationController.delegate = self;

希望它对您有用。