Question

如何通过代码设置Navigation Controller 为root view controller

Answer 1

通过appDelegate，也不用IB的方式，用代码来实现，为一个ViewController添加一个NavigationController，并且声明一下他的rootViewcontroller,求高人指点

GroupsController *groupsController = [[[GroupsController alloc] initWithNibName:nil bundle:nil] autorelease];
UINavigationController *navigationController =
[[UINavigationController alloc] initWithRootViewController:groupsController];

[myViewController presentModalViewController: navigationController];
</pre>

Answer 2

self.window.rootViewController = "你的Navigation Controller";