第 3 层级 — 自适应就绪

Apps that are Adaptive ready run full screen on all form factors and provide basic support for external input devices, enabling users to complete critical task flows on any device.

Depiction of the three quality tiers as layers stacked vertically with the bottom tier highlighted.

Adaptive ready apps must first fulfill the core app quality requirements—in particular, the User experience requirements.

Guidelines

Provide a stable and functional experience on all form factors.

Configuration and continuity

Guideline ID Test IDs Description
Config_Changes T-Config_Orientation,
T-Config_State

App fills the available display area—the entire screen or, in multi-window mode, the app window. Content does not overflow the available display area. App is not letterboxed; it does not run in compatibility mode.

App handles configuration changes and retains or restores its state as the device goes through configuration changes such as device rotation, folding and unfolding, and window resizing in split‑screen and desktop windowing modes, for example:

  • Scroll position of scrollable fields is maintained
  • Text typed into text fields is retained and the keyboard state is restored
  • Media playback resumes where it left off when the configuration change was initiated
Config_Combinations T-Config_Combinations App handles combinations of configuration changes, such as window resizing followed by device rotation, or rotation followed by device folding or unfolding.

Multi-window mode and multi-resume

Guideline ID Test IDs Description
Multi-Window_Functionality T-Multi-Window_Functionality

App is fully functional in multi-window mode. See Support multi-window mode.

Note: Unity apps should be on Unity Long Term Support (LTS) version 2019 or later. See Multi-window mode verification.
Multi-Resume T-Multi-Window_Focus,
T-Multi-Window_Resources		 App fully supports multi-resume. App updates its UI (continues playing media, incorporates new messages, updates download progress, etc.) when the app is not the top focused app. In addition, the app handles the loss of exclusive resources such as cameras and microphones in multi-window scenarios. See Activity lifecycle in multi-window mode.

Camera preview and media projection

Guideline ID Test IDs Description
Camera_Preview T-Camera_Preview App provides camera preview in landscape and portrait orientations, folded and unfolded device states, and multi-window mode. Preview is properly proportioned and in the correct orientation.
Media_Projection T-Media_Projection App supports media projection in landscape and portrait orientations, folded and unfolded device states, and multi-window mode. Projection is properly proportioned and in the correct orientation.

Keyboard, mouse, and trackpad

Guideline ID Test IDs Description
Keyboard_Input T-Keyboard_Input App supports text input using external keyboard and switches between physical and virtual keyboards without relaunching the app when an external keyboard is connected or disconnected.
Mouse_Trackpad_Basic T-Mouse_Trackpad_Basic

App supports basic mouse or trackpad interactions:

  • Click: Any clickable element, including buttons, drop‑down menus, text entry fields, and navigation icons
  • Select: Any selectable element, including radio buttons, checkboxes, and text (by swiping or double clicking)
  • Scroll: Any scrollable element, such as lists and pickers, scrollable both vertically and horizontally

Stylus

Guideline ID Test IDs Description
Stylus_Basic T-Stylus_Basic

App provides basic support for stylus‑equipped tablets, foldables, and desktop devices. The stylus can be used to select and manipulate UI elements, including scrolling through lists, pickers, and other scrollable content.

See Stylus in Input compatibility on large screens.

Note: Basic stylus input is the same as touch input, which is fully supported by Android. Basic stylus input is automatically enabled for all apps with no special development required.
Stylus_Text_Input T-Stylus_Text_Input

On Android 14 (API level 34) and higher, users can write and edit text in text input fields using a stylus. On ChromeOS M114 and higher, a stylus can be used to write and edit text in text input fields in WebView components.

Note: On Android 14 and higher, EditText components support input using a stylus by default; no special development is required. On ChromeOS M114 and higher, WebView supports stylus input in text fields by default.

Tests

To confirm that your app is functional on all form factors, run the following tests.

Configuration and continuity

Test ID Guideline IDs Description
T-Config_Orientation Config_Changes Verify that the app is not letterboxed and is not running in compatibility mode in portrait orientation, landscape orientation, multi-window mode, or when a large screen foldable device is unfolded in portrait or landscape orientation. Verify that all content fits within the available display space.

Resize the app window in multi-window mode, including split-screen and desktop windowing modes. On desktop devices, minimize and restore the app window, maximize and restore the app window. Verify that the app assumes the proper orientation and maintains state in all window sizes.

Note: Test on a large screen device (sw >= 600 dp) running Android 12 (API level 31) or higher to ensure the device supports the following:
T-Config_State Config_Changes

From each app screen that has scrollable content, continuous playback content, or text entry fields, do the following:

  • Scrollable content: Scroll the content
  • Playback content: Begin playback
  • Text entry fields: Enter text in multiple fields

Rotate the device between landscape and portrait orientations, fold and unfold the device (if applicable), and resize the app window in multi-window mode. Minimize and restore the app window on desktop devices; maximize and restore the app window. Verify the following:

  • Scrollable content: The scroll position remains the same
  • Playback content: Playback resumes where it left off when the configuration change was initiated
  • Text entry fields: Previously entered text is retained in input fields
T-Config_Combinations Config_Combinations From each app screen, perform combinations of rotating the device between landscape and portrait orientations, folding and unfolding the device (if applicable), and resizing the app window in multi-window mode.

Multi-window mode and multi-resume

Test ID Guideline IDs Description
T-Multi-Window_Functionality Multi-Window_Functionality

Open the app in multi-window mode. Check whether the app is fully functional in all window sizes, device orientations, and foldable device states. Resize the app window in each orientation. For foldable devices, fold and unfold the device in each orientation.

Unity apps

Open an app other than your Unity app. Go to the Recents screen. Select the app icon and put the app in split-screen mode. Open your Unity app, which should launch in split-screen mode beside or below the first app. Go to the Home screen to hide the pair of apps. Go to the Recents screen. Select the split-screen app pair that includes your Unity app. Verify that the Unity app resumes its activity and the app's layout in the split-screen window is correct with all UI elements accessible.
T-Multi-Window_Focus Multi-Resume Open the app and initiate a process, such as playing a video, that continuously updates the app. Open another app and make the new app the top focused app. Verify that the non-focused app continues to update its content (for example, a video continues to play).
T-Multi-Window_Resources Multi-Resume In the app, open the camera or use the microphone. Open another app, and make the new app the top focused app. Verify that the non-focused app has relinquished the camera or mic. Make the original app the top focused app. Verify that the app has regained access to the camera or mic.

Camera preview and media projection

Test ID Guideline IDs Description
T-Camera_Preview Camera_Preview Open the app full screen and in multi-window mode. Start the camera from within the app. Rotate the device between landscape and portrait orientations. For foldable devices, fold and unfold the device in each orientation. In multi-window mode, resize the app window. Verify that the camera preview is in the proper orientation and proportions in all device states and window sizes.
T-Media_Projection Media_Projection Open the app full screen and in multi-window mode. Start a media projection. Rotate the device between landscape and portrait orientations. For foldable devices, fold and unfold the device in each orientation. In multi-window mode, resize the app window. Verify that the media projection is in the proper orientation and proportions in all device states and window sizes.

Keyboard, mouse, and trackpad

Test ID Guideline IDs Description
T-Keyboard_Input Keyboard_Input For each app screen that has text entry fields, connect an external keyboard to the device and enter text with the external keyboard and the virtual keyboard. Disconnect the external keyboard and enter text with the virtual keyboard.
T-Mouse_Trackpad_Basic Mouse_Trackpad_Basic

For each app screen, connect a mouse and trackpad to the device. Perform basic mouse and trackpad interactions:

  • Click all clickable elements such as buttons, drop‑down menus, and text entry fields.
  • Select radio buttons and checkboxes. Select text by swiping and double clicking.
  • Scroll vertically and horizontally (if applicable) through lists, pickers, and other scrollable UI elements.

Stylus

Test ID Guideline IDs Description
T-Stylus_Basic Stylus_Basic Using a stylus, navigate through the app, select UI elements, scroll through lists and pickers, and generally interact with the app.
T-Stylus_Text_Input Stylus_Text_Input On Android 14 (API level 34) and higher, enter and edit text in text input fields using a stylus. The software keyboard shouldn't appear. On ChromeOS M114 or higher, enter and edit text in text input fields in a WebView.