使用标签栏控制器时的方向问题

Posted 2023-03-15

【中文标题】使用标签栏控制器时的方向问题

【英文标题】：orientation issues while using tab bar controller

【发布时间】：2013-07-16 13:29:03

【问题描述】：

我在有 4 个标签的 iPhone 应用中使用标签栏控制器。我已经为这两个方向编写了代码。

问题是，当我将标签页从纵向视图切换到横向视图时，我遇到了麻烦。例如。如果我处于 tab1 横向模式，现在我切换标签并移动到 tab2 横向模式，但我可以看到该特定视图的纵向设置，而不是横向视图。

到目前为止，包含标签栏控制器的启动视图控制器上的代码如下：

-(void)viewWillAppear:(BOOL)animated

    [self.navigationController setNavigationBarHidden:YES animated:animated];
    if (self.interfaceOrientation==UIInterfaceOrientationLandscapeLeft)
    
        [self rotatingLandscape];
    
    else if (self.interfaceOrientation==UIInterfaceOrientationLandscapeRight)
    
        [self rotatingLandscape];
    
    if (self.interfaceOrientation==UIInterfaceOrientationPortrait)
    
        [self RotatingPotrait];
    
    else if (self.interfaceOrientation==UIInterfaceOrientationPortraitUpsideDown)
    
        [self RotatingPotrait];
    
    [super viewWillAppear:animated];


- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation

    if (interfaceOrientation==UIInterfaceOrientationPortrait) 
     
        rotate=YES; 
        [self RotatingPotrait];
    
    if (interfaceOrientation==UIInterfaceOrientationPortraitUpsideDown)
     
        rotate=YES;
        [self RotatingPotrait];
    
    if (interfaceOrientation == UIInterfaceOrientationLandscapeLeft) 
    
        rotate=NO;
        [self rotatingLandscape]; 
    
    if (interfaceOrientation == UIInterfaceOrientationLandscapeRight) 
     
        rotate=NO;
        [self rotatingLandscape]; 
    
    return YES;


-(void)rotatingLandscape

    int selIndex = [self.tabBarController selectedIndex];
    if (selIndex == 0)
    
         [view1p rotatingLandscape];
    
    else if (selIndex == 1)
    
        [view2 rotatingLandscape];
    
    else if (selIndex == 2)
    
        [view3 rotatingLandscape];
    
    else if (selIndex == 3)
    
        [view4 rotatingLandscape];
    
    self.tabBarController.view.frame=CGRectMake(0, 0, 480, 300);


-(void)RotatingPotrait

    int selIndex = [self.tabBarController selectedIndex];
    if (selIndex == 0)
    
        [view1p RotatingPotrait];
    
    else if (selIndex == 1)
    
        [view2 RotatingPotrait];
    
    else if (selIndex == 2)
    
        [view3 RotatingPotrait];
    
    else if (selIndex == 3)
    
        [view4 RotatingPotrait];
    
    self.tabBarController.view.frame=CGRectMake(0, 0, 320, 460);
   

【问题讨论】：

题外话：你应该使用switch语句和/或UIInterfaceOrientationIsLandscape()/UIInterfaceOrientationIsPortrait()

我没明白，请详细说明

@Kevin :- 你能帮我解决这个问题吗？

【参考方案1】：

我已经解决了我的项目支持 ios 6.0+ 的问题 步骤：

1创建UITabBarViewController的子类并添加

- (BOOL)shouldAutorotate

    return [self.selectedViewController shouldAutorotate];


- (NSUInteger)supportedInterfaceOrientations

    return [self.selectedViewController supportedInterfaceOrientations];

2 子类 UINavigationController 添加

- (BOOL)shouldAutorotate

    return [self.topViewController shouldAutorotate];


- (NSUInteger)supportedInterfaceOrientations

    return [self.topViewController supportedInterfaceOrientations];

3 到 AppDelegate 添加

- (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window
    NSUInteger orientations = UIInterfaceOrientationMaskAllButUpsideDown;

    if(self.window.rootViewController)
        UIViewController *presentedViewController = [[[[(UINavigationController *)self.window.rootViewController viewControllers] objectAtIndex:self.tabBarController.selectedIndex] viewControllers] lastObject];
        orientations = [presentedViewController supportedInterfaceOrientations];
    

    return orientations;

向每个 UIViewController 添加 4 个 self.tabBarCotroller.delegate = self;

和委托方法

- (void)tabBarController:(UITabBarController *)theTabBarController didSelectViewController:(UIViewController *)viewController 
    NSUInteger indexOfTab = [theTabBarController.viewControllers indexOfObject:viewController];
    NSLog(@"Tab index = %u ", indexOfTab);

    UIViewController *mVC = [[UIViewController alloc] init];
    mVC.view.backgroundColor = [UIColor redColor];
    mVC.modalPresentationStyle = UIModalPresentationFormSheet;
    [self presentViewController:mVC animated:NO completion:nil];
    [self dismissViewControllerAnimated:NO completion:nil];

为每个 UIViewController 添加所需的方向

- (BOOL)shouldAutorotate

    if (self.interfaceOrientation==UIInterfaceOrientationLandscapeLeft || self.interfaceOrientation==UIInterfaceOrientationLandscapeRight)
    
        return NO;

     else 
        return YES;
    


- (NSUInteger)supportedInterfaceOrientations

    return UIInterfaceOrientationMaskLandscape; //UIInterfaceOrientationMaskPortraite

对我来说这是工作

我创建了example