[null,null,["最后更新时间 (UTC):2025-07-25。"],[[["\u003cp\u003eAndroid Automotive OS offers two customizable reference designs optimized for portrait and small landscape screens.\u003c/p\u003e\n"],["\u003cp\u003eBoth designs include essential UI features, accommodate various screen configurations and input methods, and allow for car maker customizations.\u003c/p\u003e\n"],["\u003cp\u003eThe portrait design provides robust multitasking, displaying navigation, a second app, and media controls concurrently.\u003c/p\u003e\n"],["\u003cp\u003eThe small landscape design prioritizes a single-app, full-frame experience with limited multitasking through the Home screen.\u003c/p\u003e\n"],["\u003cp\u003eCar makers choose a design based on their display format, with the portrait design offering more features and available starting in Android 14.\u003c/p\u003e\n"]]],[],null,["# Reference designs\n\n\u003cbr /\u003e\n\nAndroid Automotive OS (AAOS) includes 2 fully built, customizable reference\ndesigns, accommodating both portrait and small landscape screens.\n\nThis section provides UX details for these two reference designs, which optimize\nthe AAOS system UI for\n[portrait](/cars/design/automotive-os/product-experience/system-ui/portrait-reference/overview)\nand\n[small landscape](/cars/design/automotive-os/product-experience/system-ui/small-landscape)\nscreens. For more about the features of the reference designs and how to choose\nbetween them, see below.\n\nChoose a reference design\n-------------------------\n\nCar makers typically choose which reference design to use based on the display\nformat they're designing for:\n[portrait](/cars/design/automotive-os/product-experience/system-ui/portrait-reference/overview)\nor\n[small landscape](/cars/design/automotive-os/product-experience/system-ui/small-landscape).\nThe 2 reference designs share many design goals and features, with the larger\nformat of the portrait screen providing space for some extra capabilities.\n\n### Similarities\n\nBoth reference designs:\n\n- **Include essential UI features** such as navigation bar, status bar, and media controls\n- **Accommodate a range of screen configurations**, adjusting for size, reachability, aspect ratios, shapes, and number of displays. These designs also accommodate various input methods and angles and bends on displays.\n- **Allow customizations** that reflect the car maker's brand and the configurations of specific car models, while allowing some screen elements to showcase app branding.\n\n### Differences\n\nThe main functional difference between the designs is that the portrait\nreference design has space for more multitasking options. It can simultaneously\ndisplay a navigation app, a second app, and media controls. More features are\nsummarized below.\n\n| Small landscape reference design | Potrait reference design |\n|--------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| | |\n| **Key features:** - Optimized for smaller displays - Prioritizes a single-app experience (full frame) - Limited mutitasking via Home screen - Rotary enabled | **Key features:** - Optimized for portrait displays - Multliple-app experience, so navigation remains present - Robust multitasking, with media controls always available - Available starting in Android 14 |\n| For more details, see [Small landscape reference design](/cars/design/automotive-os/product-experience/system-ui/small-landscape). | For more details, see [Portrait reference design](/cars/design/automotive-os/product-experience/system-ui/portrait-reference/overview). |"]]