我对iphone非常陌生,我有以下误解。
互联网上有关如何以编程方式使用NavigationController
的教程说:
NavigationController must be declared in applicationDidFinishLaunching and must be init with a root.After that you can add views to it.
我有这个:
UIViewController
类意为(AdiViewController.h, AdiViewController.m and AdiViewController.xib)
而不是Delegate file
意味着没有applicationDidFinishLaunching
方法。
我想做的是从我的班级 - AdiViewController
按下按钮转到另一个视图。
我知道我需要一个NavigationController
来保留我的观点,其中包含AdiViewController
。
但我的问题是我应该在NavigationController
中初始化viewDidAppear
的位置?...因为我没有Delegate
个文件。
如果你可以用我的这个小问题提供一个最小的例子,那就太棒了。我很有信心,对于那些高级人员来说这是什么,但我仍然没有得到它。谢谢
答案 0 :(得分:2)
NavigationController必须在applicationDidFinishLaunching中声明 - >这不是真的。 在你的AdiViewController中,如果按下按钮时你想要加载导航控制器吗?
// Hook this IBAction to your button in AdiViewController
- (IBAction)pushNavController
{
AnotherViewController* rootView = [[AnotherViewController alloc] initWithNibName:@"Anotherview" bundle:nil];
UINavigationController* navController = [[UINavigationController alloc] initWithRootViewController:rootView];
[rootView release];
[self presentModalViewController:navController animated:YES];
[navController release];
}
如果你在AnotherViewController中,即你在导航控制器的根视图控制器中。您需要从那里推送和弹出视图控制器。例如,如果你在AnotherViewController中有一个按钮:
// push next view controller onto navigation controller's stack
- (IBAction)pushNextViewController
{
NextViewController* nextView = [[NextViewController alloc] initWithNibName:@"NextView" bundle:nil];
[self.navigationController pushViewController:nextView animated:YES];
[nextView release];
}
// Similarly if you want to go back to AnotherViewController from NextViewController you just pop that from navigation controller's stack
- (IBAction)pushNextViewController
{
[self.navigationController popViewControllerAnimated:YES];
}