在应用程序中有一个 UITabBar 和一个 UINavigationController? [英] Having a UITabBar AND a UINavigationController in an app?

问题描述

大家好，我是 iPhone 开发的新手，我不了解整个 UINavigationController 和 UITabBarController 的想法.一个可以替代另一个 - Tweetie 等应用如何将两者结合起来?

Hey everyone, I am new to iPhone development and I'm not understanding the whole UINavigationController and UITabBarController idea. Is one a substitute for the other - how do apps such as Tweetie combine both?

我想让我的应用程序在底部有一个持久的标签栏(这似乎正在工作)，但在顶部还有一个导航栏，可以在不移除标签栏的情况下将视图推送/弹出到屏幕上.

I'd like to have my app have a persistent Tab Bar @ the bottom (which seems to be working), but also a Navigation bar at the top which can push/pop views onto the screen without removing the tab bar.

• 我怎样才能做到这一点?
• 就所有这些控制器而言，就我的 MainWindow.xib 而言，IB 中的层次结构应该是什么样的?
• 这里的最佳做法是什么?

非常感谢，

推荐答案

只需将视图控制器包装在 UINavigationController 中，并将 UINavigationController 放入 UITabBar.这对你来说很好......

Just wrap the view controller inside the UINavigationController and Place the UINavigationController inside the UITabBar. This will work fine for you…

例子:

NSMutableArray *tabBarViewControllers = [[NSMutableArray alloc] initWithCapacity:2];

tabBarController = [[UITabBarController alloc] init];
[tabBarController setDelegate:self];

UINavigationController *navigationController = nil;
navigationController = [[UINavigationController alloc] initWithRootViewController:<Your View controller1>];
[tabBarViewControllers addObject:navigationController];
[navigationController release];
navigationController = nil;

navigationController = [[UINavigationController alloc] initWithRootViewController:<Your View controller2>];
[tabBarViewControllers addObject:navigationController];
[navigationController release];
navigationController = nil;

tabBarController = tabBarViewControllers;
[tabBarViewControllers release];
tabBarViewControllers = nil;

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