![]() So, we talked about how to make your UI focusable. It will give you an explanation of why the focus system does not consider this item to be focusable. ![]() For example, a view that you are trying to make focusable. CheckFocusability(for item:) and pass in the item you want to debug. If a focus item is not behaving as you would expect, there are some debugging tools available. Both of these methods will only have an effect on cells that don't override canBecomeFocused. Note that in sidebars, allowsFocus is true by default.įor more fine-grained control, you can use canFocusItemAt indexPath in your delegate to control focusability for each cell individually. Set allowsFocus to true on a table or collection view to make all of its cells focusable. UIKit offers some convenience APIs, so you don't have to subclass. The most likely candidates for keyboard navigation are cells in a table or collection view. This allows you to adopt focus in content that is rendered with other technologies, like Metal. You can also implement both protocols on your own objects. UIViewController, on the other hand, only conforms to UIFocusEnvironment, since it doesn't provide any visuals itself. UIView conforms to both of these protocols, since any view can be focused itself, but it can also contain subviews that can be focused. FocusEnvironments define the hierarchy of focusable items. FocusItems are simply that, items that can be focused. Now, you might be wondering, what is a focus item? The backbone of the focus system are the two protocols: UIFocusItem and UIFocusEnvironment. Override it and return true to make an item focusable. It is a read-only property of UIFocusItem. canBecomeFocused is the single source of truth. But now, let's take a look at how to make more elements in your UI focusable. At the end, I'm going to show you some important changes in the responder chain that you should be familiar with. I'll show you some special behavior in sidebars that you should be aware of, and we are going to talk about focus groups, a new way to define structure in your app. If you wanna learn more about the focus system in general, check out "Focus Interaction in tvOS." In this video, I'm going to show you how to make more content in your app focusable and how to customize the appearance of these focusable items. However, there are some new APIs and behavioral differences that you should be aware of. To learn more about full Keyboard access, check out "Support Full Keyboard Access in your iOS app." Keyboard navigation on iPadOS uses the same focus system as tvOS If you have written tvOS apps before, many of the APIs will feel familiar. Full Keyboard access already allows these controls to be keyboard navigable. Leave controls such as buttons, segmented controls, and switches aside. Keyboard navigation is intended to give users access to key features of your app, so focus on text input, lists, and collection views. I know this is an exciting feature, but don't make every element in your app keyboard navigable. I'll show you how to do this in a minute. You should also opt in other collection, table, and custom views for a great experience. Once you compile with the iOS 15 SDK, this behavior will be enabled automatically for text fields, text views, and sidebars. ![]() Once I found the photo I'm looking for, I can select it by pressing return. Now I can navigate between the photos in the grid using the arrow keys. ![]() In Photos, I can press the tab key to move the focus from the Library cell in the sidebar to the photos grid on the right. First, let me show you keyboard navigation in action. I'll show you how to resolve these conflicts later. If your app already uses these key commands, your custom commands will no longer work. The arrow keys navigate within an area, and an item can be selected with the return key on iPadOS or the space bar on Mac Catalyst. The tab key navigates between significant areas in an app. Navigating any app with a keyboard on iPadOS will feel very familiar. Mac Catalyst and iPadOS 15 introduce powerful API to support keyboard navigation in your app. People love using hardware keyboards with their iPads. Welcome to Focus on iPad keyboard navigation. I'm a framework engineer on the UIKit team.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |