ios 推送 UIView 时隐藏 UITabBar

Hiding UITabBar when pushing a UIView

提问by Benny Wong

I have a UITabBarControllerwhere the default view controller is a UINavigationController. I want to be able to hide the UITabBar of the UITabBarController when I push a certain view in the UINavigationController.

我有一个UITabBarController默认视图控制器是一个UINavigationController. 当我在UINavigationController.

I've tried adding:

我试过添加：

delegate.tabBarController.hidesBottomBarWhenPushed = YES;

in my UINavigationControllerbefore I push the view, but that doesn't seem to do the trick.

在我UINavigationController推动视图之前，但这似乎不起作用。

Any tips on what I should be doing or if it's even possible? Thanks in advance!

关于我应该做什么或者是否有可能的任何提示？提前致谢！

回答by hfossli

This is better:

这个更好：

viewController.hidesBottomBarWhenPushed = YES;
[self.navigationController pushViewController:viewController animated:YES];

You have to set hidesBottomBarWhenPushed = YES on the controller you are going to push into the view...

您必须在要推入视图的控制器上设置 hidesBottomBarWhenPushed = YES ...

回答by Ben

when working with storyboard its easy to setup view controller which will hide the tabbar on push, on the destination view controller just select this checkbox:

使用故事板时，它易于设置视图控制器，它将在推送时隐藏标签栏，在目标视图控制器上只需选中此复选框：

回答by pikzelz

I've figure out how to get this solved, I was running into the same issue, but Apple also tells us how to do it in the sample called: "The Elements" (http://developer.apple.com/library/ios/#samplecode/TheElements/Introduction/Intro.html)

我已经弄清楚如何解决这个问题，我遇到了同样的问题，但 Apple 还在名为“The Elements”（http://developer.apple.com/library/）的示例中告诉我们如何做ios/#samplecode/TheElements/Introduction/Intro.html)

See function below on how to do it, add this to the init function of the view you want to push in!

请参阅下面的函数以了解如何执行此操作，将其添加到要推送的视图的 init 函数中！

-(id) init { 
    if(self = [super init]) { 
        self.hidesBottomBarWhenPushed = YES; 
    } 
    return self; 
}

It will automatically hide the tabbar like the photo app does on your iphone. And when you navigate back the parent view will just show the tabbar again.

它会像照片应用程序在您的 iphone 上一样自动隐藏标签栏。当您返回时，父视图将再次显示标签栏。

Good luck

祝你好运

回答by Hermann Klecker

I have tried most of the suggested solutions. In the end none of them worked for me.

我已经尝试了大部分建议的解决方案。最后他们都没有为我工作。

hideTabBarWhenPushed hides the tab bar not only for the view controller that is pushed next but for all view controllers that are pushed within. For those I did want the tab bar controller to re-appear.

hideTabBarWhenPushed 不仅为下一个被推送的视图控制器隐藏标签栏，而且为所有被推送的视图控制器隐藏标签栏。对于那些我确实希望标签栏控制器重新出现的人。

Orafaelreis' solution (see above) seemed to suite that most. But his attempt only worked for strict portrait orientations, not even for upside down. So I had to mend it. This is what I finally got:

Orafaelreis 的解决方案（见上文）似乎最适合这一点。但他的尝试仅适用于严格的肖像方向，甚至不适用于颠倒。所以我不得不修补它。这是我最终得到的：

#define kTabBarHeight               49 // This may be different on retina screens. Frankly, I have not yet tried.

- (void) hideTabBar:(BOOL)hide {

    // fetch the app delegate
    AppDelegate         *delegate   = [[UIApplication sharedApplication] delegate];

    // get the device coordinates
    CGRect              bounds      = [UIScreen mainScreen].bounds;
    float               width;
    float               height;

    // Apparently the tab bar controller's view works with device coordinates  
    // and not with normal view/sub view coordinates
    // Therefore the following statement works for all orientations. 
    width                   = bounds.size.width;
    height                  = bounds.size.height;

    if (hide) {

        // The tab bar should be hidden too. 
        // Otherwise it may flickr up a moment upon rotation or 
        // upon return from detail view controllers. 
        [self.tabBarController.tabBar setHidden:YES];

        // Hiding alone is not sufficient. Hiding alone would leave us with an unusable black
        // bar on the bottom of the size of the tab bar. 
        // We need to enlarge the tab bar controller's view by the height of the tab bar. 
        // Doing so the tab bar, although hidden, appears just beneath the screen. 
        // As the tab bar controller's view works in device coordinations, we need to enlarge 
        // it by the tab bar height in the appropriate direction (height in portrait and width in landscape)
        // and in reverse/upside down orientation we need to shift the area's origin beyond zero. 
        switch (delegate.tabBarController.interfaceOrientation) {
            case UIInterfaceOrientationPortrait:
                // Easy going. Just add the space on the bottom.
                [self.tabBarController.view setFrame:CGRectMake(0,0,width,height+kTabBarHeight)];
                break;

            case UIInterfaceOrientationPortraitUpsideDown:
                // The bottom is now up! Add the appropriate space and shift the rect's origin to y = -49
                [self.tabBarController.view setFrame:CGRectMake(0,-kTabBarHeight,width,height+kTabBarHeight)];
                break;

            case UIInterfaceOrientationLandscapeLeft:
                // Same as Portrait but add the space to the with but the height
                [self.tabBarController.view setFrame:CGRectMake(0,0,width+kTabBarHeight,height)];
                break;

            case UIInterfaceOrientationLandscapeRight:
                // Similar to Upside Down: Add the space and shift the rect. Just use x and with this time
                [self.tabBarController.view setFrame:CGRectMake(0-kTabBarHeight,0,width+kTabBarHeight,height)];
                break;

            default:
                break;
        }
    } else {
        // reset everything to its original state. 
        [self.tabBarController.view setFrame:CGRectMake(0,0,width,height)];
        [self.tabBarController.tabBar setHidden:NO];
    }

    return; 
}


- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation{

    // It is important to call this method at all and to call it here and not in willRotateToInterfaceOrientation
    // Otherwise the tab bar will re-appear. 
    [self hideTabBar:YES];

    // You may want to re-arrange any other views according to the new orientation
    // You could, of course, utilize willRotateToInterfaceOrientation instead for your subViews. 
}

- (void)viewWillAppear: (BOOL)animated { 

    // In my app I want to hide the status bar and navigation bar too. 
    // You may not want to do that. If so then skip the next two lines. 
    self.navigationController.navigationBar.barStyle = UIBarStyleBlackTranslucent;
    [[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationSlide];

    [self hideTabBar: YES];

    // You may want to re-arrange your subviews here. 
    // Orientation may have changed while detail view controllers were visible. 
    // This method is called upon return from pushed and pulled view controllers.   

    return;
}

- (void)viewWillDisappear: (BOOL)animated {     

    // This method is called while this view controller is pulled
    // or when a sub view controller is pushed and becomes visible
    // Therefore the original settings for the tab bar, navigation bar and status bar need to be re-instated

    [self hideTabBar:NO];

    // If you did not change the appearance of the navigation and status bar in viewWillAppear,
    // then you can skip the next two statements too. 
    self.navigationController.navigationBar.barStyle = UIBarStyleBlack;
    [[UIApplication sharedApplication] setStatusBarHidden:NO withAnimation:UIStatusBarAnimationSlide];

    return;
}

The in-line comments should explain the reasoning for each statement. Though, there may be smarter ways of coding it.

内嵌注释应解释每个语句的推理。不过，可能有更聪明的编码方式。

There is one side effect in conjunction with hiding the status bar and navigation bar too, which I do not want to hide from you guys. 1. When returning from this navigation controller to the calling navigation controller then the status bar and navigation bar on the calling controller overlap until the device is rotated once or until the related tab has been choosen again after another tab came to front. 2. When the calling view controller is a table view and when the device is in landscape mode when returning to the table, then the table is displayed in the appropriate orientation for landscape but it is layed out as if it were portrait. The upper left corner is fine but some table cells plus tab bar are hidden beneath the screen. On the right hand side there is some free space. This, too, is fixed by rotating the device again.

隐藏状态栏和导航栏也有一个副作用，我不想对你们隐藏。1. 当从这个导航控制器返回到调用导航控制器时，调用控制器上的状态栏和导航栏会重叠，直到设备旋转一次或直到另一个选项卡出现后再次选择相关选项卡。2.当调用视图控制器是一个表格视图并且当设备在返回表格时处于横向模式时，表格以适当的横向方向显示，但它的布局好像是纵向的。左上角很好，但一些表格单元格和标签栏隐藏在屏幕下方。在右手边有一些空闲空间。这也可以通过再次旋转设备来解决。

I will keep you updated once I found solutions for these minor but nasty bugs.

一旦我找到这些微小但令人讨厌的错误的解决方案，我会及时通知您。

回答by Gabriel Vicente

Here's how you get this to work:

以下是如何让它发挥作用：

In the Application Delegateyou create the UITabBarController. Then you create a UINavigationControllerwith its root controller as the view controller you want in the particular tab. Then insert the UINavigationControllerinto the "viewControllers" array of the UITabBarController. like so:

在Application Delegate您创建UITabBarController. 然后您创建一个UINavigationController根控制器作为您在特定选项卡中所需的视图控制器。然后将 插入UINavigationController到.viewControllers数组中UITabBarController。像这样：

ViewControllerForTab1 *tab1Controller = [[ViewControllerForTab1 alloc] initWithNibName:@"ViewControllerForTab1"];

UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:tab1Controller];

[tab1Controller release];


UITabBarController *tabBarController = [[UITabBarController alloc] init];
tabBarController.viewControllers = [NSArray arrayWithObjects: navController, nil];

[navController release];


[self.window addSubView:tabBarController.view];

This way you can set the "hidesBottomBarWhenPushed" property to "YES" in any view controller inside that UINavigationControllerand it will hide the UITabBar.

通过这种方式，您可以在其中的任何视图控制器中将“ hidesBottomBarWhenPushed”属性设置为“ ” ，它将隐藏.YESUINavigationControllerUITabBar

Hope that helps!

希望有帮助！

回答by orafaelreis

I'll let here my solution for this:

我会在这里给出我的解决方案：

#define FRAME_HIDDEN CGRectMake(0, 0, 768, 1073) //1073 = 1024 (screen) + 49 (UITabBar) 
#define FRAME_APPEAR CGRectMake(0, 0, 768,1024)

-(void) setHidden: (BOOL) hidden{
    CGRect frame = (hidden)? FRAME_HIDDEN : FRAME_APPEAR;
    [self.tabBarController.view setFrame:frame];
    [self.tabBarController.tabBar setHidden:hidden];
}

Calls the 'setHidden' method where you need it! I using this and the 'Singleton Pattern', then my subviews can hide the UITabBar in his Superview

在需要的地方调用“setHidden”方法！我使用这个和“单例模式”，然后我的子视图可以在他的超级视图中隐藏 UITabBar

回答by Benny Wong

It turns out that if you set the view hidesBottomBarWhenPushed:YESit hides the bar when the view appears (duh on my part). I was assigning it to the UITabBarController, which doesn't make too much sense when you think about it.

事实证明，如果您设置视图，hidesBottomBarWhenPushed:YES它会在视图出现时隐藏栏（就我而言）。我将它分配给了UITabBarController，当您考虑它时，这并没有太大意义。

[self.view hidesBottomBarWhenPushed:YES];
[super pushViewController:viewController animated:animated];

回答by Beslan Tularov

in the first UIViewController "FirstItemViewController"

在第一个 UIViewController "FirstItemViewController"

 @IBAction func pushToControllerAction(sender: AnyObject) {
     self.hidesBottomBarWhenPushed = true
     self.performSegueWithIdentifier("nextController", sender: self)
 }

in the next UIViewController "ExampleViewController"`

在下一个 UIViewController“ExampleViewController”`

 override func willMoveToParentViewController(parent: UIViewController?) {
         if parent == nil {
             var viewControllers = self.navigationController!.viewControllers
             if ((viewControllers[viewControllers.count - 2]).isKindOfClass(FirstItemViewController.self)) {
                 (viewControllers[viewControllers.count - 2] as! FirstItemViewController).hidesBottomBarWhenPushed = false
             }
         }
 }

Look at this answer https://stackoverflow.com/a/36148064/3078925

看看这个答案https://stackoverflow.com/a/36148064/3078925

回答by Haroldo Gondim

Use hidesBottomBarWhenPushedin the controller that you want to hide.

hidesBottomBarWhenPushed在要隐藏的控制器中使用。

For hide all controllers put into prepare for segue

用于隐藏所有放入的控制器 prepare for segue

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    segue.destination.hidesBottomBarWhenPushed = true
}