使用 UITabBarController 旋转界面
我使用新的 Xcode 4.2 创建了一个新的“选项卡栏项目”。 使用 UITabBar 的“新”方式是不同的:Xcode 不会创建 xib 文件(使用 UITabBarController),但它通过代码完成所有操作。 好吧,我们开始吧。
所以我在 didFinishLaunchingWithOptions
中的代码是这样的:
UIViewController *viewController1, *viewController2, *viewController3;
UINavigationController *nav1, *nav2, *nav3;
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
viewController1 = [[gemboy_iphone alloc] initWithNibName:@"vc1" bundle:nil];
viewController2 = [[concerti_iphone alloc] initWithNibName:@"vc2" bundle:nil];
viewController3 = [[discografia_iphone alloc] initWithNibName:@"vc3" bundle:nil];
nav1 = [[UINavigationController alloc] initWithRootViewController:viewController1];
nav2 = [[UINavigationController alloc] initWithRootViewController:viewController2];
nav3 = [[UINavigationController alloc] initWithRootViewController:viewController3];
}
else {
//same thing for the iPad version
}
self.tabBarController = [[UITabBarController alloc] init];
self.tabBarController.viewControllers = [NSArray arrayWithObjects:nav1, nav2, nav3, nil];
self.window.rootViewController = self.tabBarController;
[self.window addSubview:self.splash.view];
[self.window makeKeyAndVisible];
return YES;
它有效。
我的三个.m文件vc1.m,vc2.m和vc3.m(还有我的iPad UIViewControllers)有这个方法
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return YES;
}
问题是当我旋转iPhone时,它只旋转状态栏,而不旋转TabBarController!
你知道为什么吗? 谢谢
I've created a new "Tab Bar project" with the new Xcode 4.2.
The "new" way to work with UITabBar is different: Xcode doesn't create a xib file (with the UITabBarController), but it does everything via code.
Ok, let's do it.
So my code in didFinishLaunchingWithOptions
is this:
UIViewController *viewController1, *viewController2, *viewController3;
UINavigationController *nav1, *nav2, *nav3;
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
viewController1 = [[gemboy_iphone alloc] initWithNibName:@"vc1" bundle:nil];
viewController2 = [[concerti_iphone alloc] initWithNibName:@"vc2" bundle:nil];
viewController3 = [[discografia_iphone alloc] initWithNibName:@"vc3" bundle:nil];
nav1 = [[UINavigationController alloc] initWithRootViewController:viewController1];
nav2 = [[UINavigationController alloc] initWithRootViewController:viewController2];
nav3 = [[UINavigationController alloc] initWithRootViewController:viewController3];
}
else {
//same thing for the iPad version
}
self.tabBarController = [[UITabBarController alloc] init];
self.tabBarController.viewControllers = [NSArray arrayWithObjects:nav1, nav2, nav3, nil];
self.window.rootViewController = self.tabBarController;
[self.window addSubview:self.splash.view];
[self.window makeKeyAndVisible];
return YES;
And it works.
My three .m files vc1.m, vc2.m and vc3.m (and also my iPad UIViewControllers) has this method
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return YES;
}
The problem is that when I rotate the iPhone, it rotates only the status bar, and not the TabBarController!
Do you know why?
Thanks
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您绝对不必也不应该继承 UITabBarController 的子类。
如果标签栏控制器的所有视图控制器都实现了 shouldAutorotateToInterfaceOrientation 并针对相同的方向返回 YES,那么它就会很好地自动旋转。
如果您使用选项卡式应用程序模板在 Xcode 4.2 中创建一个新项目,您将看到它自动旋转得很好。
You absolutely do not have to subclass UITabBarController, nor should you.
A tab bar controller will auto-rotate just fine IF all of its view controllers implement shouldAutorotateToInterfaceOrientation and return YES for the same orientations.
If you create a new project in Xcode 4.2 with the Tabbed Application template, you will see that it auto-rotates just fine.