I have a hidden UITabBarController but it seems to cover up the buttons that I'd like to place at the bottom edge of the screen in the home view.
// hide the tabBar for the home screen
- (void) viewWillAppear:(BOOL)animated
{
self.tabBarController.tabBar.hidden = YES;
}
Is there a way around this? The tab bar will be shown for the other views except for the home view (i.e. the first tab).
Cheers!
What you could do is in Interface Builder (assuming you added the UITabBarController from within IB) choose from the Menu: Layout --> Send To Back while the TabBar is highlighted. This would mean that on the "home" view it would would not obscure the buttons and on the other views it would be at the front, assuming you have no other buttons located at the same position in the UIView in your other views.
It would, of course, be cleaner to Load a new view controller when you navigate away from the home view, and invoke the UITabBar at that point, so that you don't have to resort to this kind of UI trickery.
i.e. your home view and your other screens (with the UITabBar) would be in two different XIBs.
Related
I have a rootViewController that is a UITabBarController. A UIToolBar is present in that controller since it has a SearchBar that is global to the app. In certain tabs, there should be specific UIBarButtonItems, or UISegmentedControl, along with the searchBar. In other tabs, there should be nothing in the toolBar, just a title.
What is a good way to lay out the view? Currently based on what tab is selected, the main toolBar from the rootViewController is either used as it is, have a UISegmentedControl added to it, hidden completely and replaced with another viewController that has its own toolbar, etc. To me, I'm thinking that each viewController that is present in its own tab can have its own ToolBar, and reference the global functionality, vs hiding/showing different toolbars.
sorry if this is a convoluted question. Just wondering if people had experience with this. Thanks.
The short answer is that there isn't really a good way to do this. If you're using a tab bar controller, the tab bar will always be visible along the bottom of your screen. Presumably each tab is a UINavigationController with a navigation bar at the top. There's not an appropriate place to put toolbar buttons in this layout.
A better design could be to abandon the UITabBarController and use a UINavigationController as your root view controller. Instead of tabs, you can have a table view with an item for each view of your application. Then you'll have room for a toolbar at the bottom of the screen. In fact, UINavigationController supports having a toolbar at the bottom. You just override the toolbarItems property to return the items that should appear in each of the child view controllers. You'll just need to set toolbarHidden to NO on the UINavigationController, and you're good to go.
I want to hide tabbarcontroller on one view.
But doing so it is displaying white space and not allowing to put any image or anything else on that place.
So what should I do ?
Put one imageView with your desired image on the view controller where you do not want to show tabBar and hide tabBarController before pushing that view on navigation stack using code like
[viewControllerInstanceWhichIsGoingToPushed hidesBottomBarWhenPushed];
The method is something like this. Then Tab Bar will hide and your imageView with image will be displayed in place of TabBar.
If you add a subview to a hidden view, the subview will also go hidden.
In your case, you can have another view controller with just the activity indicator and display the view controller while the loading operation is done. And, after the loading is over, remove that view controller and show the tab bar controller. An example,
// while loading the content
appDelegate.window.rootViewController = loadingViewController;
// once the loading is over
appDelegate.window.rootViewController = tabbarController;
I have encountered this problem before as well and was not able to get anything to get into the blank space using the normal hierarchy. I got around this problem by adding another level of navigation.
ex:
right now you have at UITabBarController which contains your UIViewControllers.
Instead:
Have another UIViewController as the root and then add the tabbarcontroller onto it either as a modalviewcontroller or as a pushed viewcontroller (if you make your root a navigationcontroller). Then, your rootviewcontroller can freely put views under or over the tabbarcontroller's view, independent of whether the bar is present or not.
My application is for iPad.
I have a UIViewController as the main view of my application.
I have an UIView at the bottom as a footer, and inside 3 UIView (subviews).
My 3 subviews in the footer banner load for each a different UIViewController and display the view of this controller into their view.
I would like when I click on a button into one of this subview (button that belongs to my UIViewController, with a 240x162px view), to make the subview disappear and display a centered popup (500x350px) with an animation into my main view.
To show you an example, WeatherBug for iPad has what I want, when you click on a block on top, the little view flip and a zoom effect is done, that display a centered uiview with more content.
Please tell me where I should look for!
Thank you,
Use the delegate pattern. Assign your "root" view controller as the delegate for your "footer" view controller. When the button is tapped (no clicking on the iPhone), the "footer" view controller will hide the banner, then call a delegate method to handle the tap action; in this case, the "root" view controller then shows your centered popup. When the popup is done, the "root" view controller then tells the "footer" view controller go show the banner again and go back to normal.
I have an app built from the UITabBarController starter project. The first tab is part of the main.xib that contains the tab bar. I would like to slide a view up from the bottom on top of that tab's view that only covers part of the screen. My understanding is that you can only cover part of the screen if you make the top view non-modal, but I don't see a way to do that without a NavigationController.
How can I do this?
you can add a UIView as a subview to the current view, and then animate its appearance into the screen using animation blocks, or Quartz or however you would like.
presentModalViewController: is actually a method that belongs to UIViewController, the superclass of UINavigationController, so you can use it from any view controller, not just a navigation controller.
Have you tried using a UIActionSheet? That's an easy way to get a view with a few buttons for user input to slide up and only cover the bottom portion of the current view.
I have a tab bar view, and another UIView which contains a button, which needs to be visible just above the tab bar.
I have added another view which always sits above the current select tab's view, but can't figure out how to make it sit just above the tab bar Screenshot http://img.skitch.com/20090524-jq6ufyiwp6c2uu1x5tkrrsd97m.jpg
I would suggest sub-classing the tabbar to include the new view. That way you do not have to worry about a tab overlaying the view. All your resizing should be done automatically and you will never accidentally hide a component.
You can also have the controller also look after the button and view that you add. you would just need to replace the tabbar in the tabbarviewcontroller to be your one.
Add your view with button in the tab bar view and use either one of these
– bringSubviewToFront:
– insertSubview:aboveSubview:
to put it above all and check how many pixels you need to position your button so that it does not get above the tabs.
You could also add it at the window level.