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Bar At Bottom Of Iphone Screen

Written By Wednesday, August 3, 2022 Add Comment Edit

Tab confined

Tab confined utilise bar items to navigate between mutually exclusive panes of content in the same view.

Tab bars help people understand the different types of information or functionality that a view provides. They also let people quickly switch between sections of the view while preserving the current navigation state inside each section.

Run into Tab views for the similar component in macOS.

Best practices

Use a tab bar only to enable navigation, not to assist people perform actions. A tab bar lets people navigate among unlike areas of an app, similar the Alert, Stopwatch, and Timer tabs in the Clock app. If y'all need to provide controls that human activity on elements in the electric current view, use a toolbar instead.

Make sure the tab bar is visible when people navigate to different areas in your app. The exception is a tab bar within a modal view. Considering a modal view gives people a divide experience that they dismiss when they're finished, hiding the view's tab bar doesn't touch on app navigation.

Apply the minimum number of tabs required to assistance people navigate your app. Each additional tab increases the complexity of your app, making it harder for people to locate information. Aim for a few tabs with short titles or icons to avoid crowding and causing tabs to truncate. In full general, utilize iii to five tabs in iOS; employ a few more in iPadOS and tvOS if necessary.

Proceed tabs visible even when their content is unavailable. If tabs are enabled in some cases but not in others, your app'southward interface might appear unstable and unpredictable. When necessary, explain why a tab's content is unavailable. For example, even when there is no music on an iOS device, the Listen Now tab in the Music app remains bachelor and offers suggestions for downloading music.

Use concrete nouns or verbs every bit tab titles. A good tab title helps people navigate by conspicuously describing the blazon of content people discover when they select the tab. Consider nouns for category titles like Music, Movies, Telly Shows, and Sports, and verbs or short verb phrases for things related to time or peoples' perspectives on the content (similar Sentinel Now or For You).

Be cautious of overcrowding tabs with functionality. Tabs represent an app's carte of options. Tabs titled "Home" tend to be too large in scope for an app. Aim to create focus by representing specific and descriptive categories of content or functionality on each tab.

Platform considerations

Not supported in macOS or watchOS.

iOS, iPadOS

By default, a tab bar is translucent: It uses a background material but when content appears behind it, removing the cloth when the view scrolls to the bottom. A tab bar hides when a keyboard is onscreen.

Avert overflow tabs whenever possible. Depending on device size and orientation, the number of visible tabs tin be smaller than the total number of tabs. If horizontal space limits the number of visible tabs, the trailing tab becomes a More tab, revealing the remaining items in a list on a separate screen. The More tab makes it harder for people to reach and detect content on tabs that are hidden, so try to limit scenarios in your app where this can happen.

In an iPadOS app, consider using a sidebar instead of a tab bar. Because a sidebar tin can display a large number of items, it can make navigating an iPad app more efficient. You tin also let people customize a sidebar'southward items and let them hide it to make more than room for content. For guidance, see Sidebars.

Ensure that tabs touch the view that's attached to the tab bar, not views elsewhere onscreen. For case, make certain selecting a tab on the left side of a split view doesn't cause the right side of the split view to change.

Use a bluecoat to communicate unobtrusively. Y'all tin can display a bluecoat — a cherry-red oval containing white text and either a number or an exclamation indicate — on a tab to indicate that new information associated with that view or mode is available. For guidance, run into Notifications.

Consider using SF Symbols to provide scalable, visually consequent tab bar items. When you utilize SF Symbols, tab bar items automatically adapt to different contexts. For example, the tab bar can be regular or compact, depending on the electric current device and orientation. Besides, tab bar icons can appear higher up tab titles in portrait orientation, whereas in landscape, the icons and titles can announced side by side. Adopt filled symbols or icons for consistency with the platform. If your app uses a sidebar instead of a tab bar when information technology runs on iPad, switch the filled symbols or icons to the outlined variant in the sidebar.

A screenshot of the Photos app on an iPhone in landscape orientation. Each tab in the tab bar shows an icon followed by a text title.

If y'all need to create custom tab bar icons using bitmaps, create each icon in two sizes so that the tab bar looks proficient in both regular and meaty environments. Use the following metrics when creating tab bar icons in different shapes. For guidance, see Icons.

Target width and superlative (circular icons)

A diagram of a solid blue circle, which represents the target, centered inside the outlines of two squares. All three shapes are contained within the outline of a rectangle. The width of the inner square is slightly smaller than the diameter of the circle. The width of the outer square is the same as the diameter of the circle. The width of the rectangle is slightly larger than its height. A vertical line, extending to the top and bottom edges of the outer square, indicates the target's height. A horizontal line, extending to left and right edges of the outer square, represents the target's width.

Regular tab bars Compact tab bars
25x25 pt (75x75 px @3x) 18x18 pt (54x54 px @3x)
25x25 pt (50x50px @2x) 18x18 pt (36x36 px @2x)

Target width and elevation (square icons)

A diagram of a solid blue square, which represents the target, centered inside the outline of a slightly larger square. Both shapes are contained within the outline of a rectangle. The solid blue square is slightly smaller than the outlined square. The width of the rectangle is slightly larger than its height. A vertical line, extending to the top and bottom edges of the blue square, represents the square's height. A horizontal line, extending to left and right edges of the blue square, indicates the target's width.

Regular tab bars Meaty tab confined
23x23 pt (69x69 px @3x) 17x17 pt (51x51 px @3x)
23x23 pt (46x46 px @2x) 17x17 pt (34x34 px @2x)

Target width (wide icons)

A diagram of a solid blue rectangle, which represents the target, vertically centered inside the outline of a larger rectangle. The height of the blue rectangle is approximately half the height of the outlined rectangle. The outlines of two squares are horizontally centered within the outlined rectangle. The width of the outlined rectangle is slightly larger than its height. A horizontal line, extending to left and right edges of the outlined rectangle, represents the target's width.

Regular tab bars Compact tab confined
31pt (93px @3x) 23pt (69px @3x)
31pt (62px @2x) 23pt (46px @2x)

Target elevation (tall icons)

A diagram of a solid blue rectangle, which represents the target, horizontally centered inside the outline of a larger rectangle. The width of the blue rectangle is approximately half the width of the outlined rectangle. The outlines of two squares are horizontally centered within the outlined rectangle. The width of the outlined rectangle is slightly larger than its height. A vertical line, extending to top and bottom edges of the outlined rectangle, represents the target's height.

Regular tab bars Compact tab bars
28pt (84px @3x) 20pt (60px @3x)
28pt (56px @2x) 20pt (40px @2x)

macOS

Tab confined aren't available in macOS. Instead, tab views perform a similar role.

tvOS

A tab bar is highly customizable. For instance, yous can:

  • Specify a tint, color, or image for the tab bar groundwork
  • Cull a font for tab items, including a different font for the selected item
  • Specify tints for selected and unselected items
  • Add together push icons, similar settings and search

Past default, a tab bar is translucent, and but the selected tab is opaque. When people utilize the remote to focus on the tab bar, the selected tab includes a drib shadow that emphasizes its selected land. The height of a tab bar is 68 points, and its top edge is 46 points from the peak of the screen; you tin can't alter either of these values.

If there are more items than can fit in the tab bar, the organisation truncates the rightmost particular by applying a fade outcome that begins at the right side of the tab bar. If there are enough items to crusade scrolling, the organisation also applies a truncating fade consequence that starts from the left side.

If y'all use an icon for a tab championship, make certain it's familiar. Y'all can employ icons every bit tab titles to aid save space, but merely for universally recognized symbols like search or settings. Using an unfamiliar symbol without a descriptive championship can confuse people. For guidance, come across SF Symbols.

Be enlightened of tab bar scrolling behaviors. By default, people can gyre the tab bar offscreen when the current tab contains a single master view. You tin can encounter examples of this beliefs in the Watch Now, Movies, TV Show, Sports, and Kids tabs in the Goggle box app. The exception is when a screen contains a split view, such as the TV app'southward Library tab or an app'southward Settings screen. In this case, the tab bar remains pinned at the top of the view while people scroll the content within the primary and secondary panes of the carve up view. Regardless of a tab'south contents, focus always returns to the tab bar at the pinnacle of the folio when people printing Bill of fare on the remote.

In a alive-viewing app, organize tabs in a consistent style. For the best experience, organize content in live-streaming apps with tabs in the post-obit order:

  • Alive content
  • Cloud DVR or other recorded content
  • Other content

For additional guidance, run into Live-viewing apps.

Create a branded logo epitome to display next to the leading or trailing terminate of the tab bar, if information technology makes sense in your app. To ensure enough room between the branded logo image and the edge of the tab bar, identify the image within the condom margin. Use the post-obit epitome size values for guidance:

Maximum width Maximum meridian
200 pt 68 pt

Source: https://developer.apple.com/design/human-interface-guidelines/components/navigation-and-search/tab-bars/

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