![]() ![]() The Mail app on the iPad switches between a popup list of emails and a fixed list as you go from portrait to landscape orientation. The Stocks app shows the price history chart full-screen in landscape instead of sharing the screen with a list of stocks and their current prices, and swiping sideward switches between stocks instead of between the chart, news, and financial summary of the selected stock. The Calculator app shows extra, "scientific" keys (like square root and log) in landscape mode. Two of the built-in apps, the Calculator and Stocks apps, showed examples of being responsive in ways other than just "expand or shrink to fit width and height". While support for different orientations was in some devices before the iPhone, for many people the iPhone was their first experience with it. In dashboard apps or ones used for repeated input, complete control over the layout of what exactly fits on one screen is important. On a laptop or desktop, you would expect use of the keyboard and mouse for data entry and control, with "tooltips" when you hover over tiny controls, and key-press input instead of on-screen tapping. The types of UI widgets might change, for example using a longer, more verbose list rather than a simpler spinner. When the same app runs on the smaller screen of a smartphone, you might expect some of the areas to move off-screen with handles or buttons to bring them into view, and the contents of listings to be terser, with details possibly being available by tapping on a row. When you rotate a device from portrait to landscape you would expect the layout to change, perhaps moving a toolbar or list from the top or bottom to the side, and perhaps changing the direction you need to swipe or scroll. ![]() You expect to be able to swipe through lists of data and tools. On a tablet, for example, you would expect, as appropriate, a mixture of scrolling lists, toolbars, choosers, keypads, and other UI widgets as well as popups, dropdowns, and slide-in tool trays to hold them. For web apps you expect even more extensive user interface capabilities than on a web site meant for reading. ![]()
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