Bottom sheet is an interface element that slides up from the bottom of the screen to display additional options, actions, or content. It allows users to access more functionality without leaving the current context, making it a flexible tool for layering information. The strength of bottom sheets lies in their balance between visibility and non-intrusiveness.
The animation for a bottom sheet should feel smooth and anchored to the bottom edge of the screen. As it slides into view, easing should create a natural sense of momentum, while the background often dims or blurs to reinforce focus. Dismissal should be just as fluid, sliding the sheet back down with clear responsiveness to swipes or taps.
Bottom sheets are often used for menus, action pickers, content previews, or additional settings. They work best when the content is lightweight and easily digestible, since occupying only part of the screen encourages brevity. Overloading a bottom sheet with too much complexity can overwhelm users instead of helping them.
To refine bottom sheet interactions, designers often add small details such as a drag handle at the top, elastic resistance when pulled, or layered depth effects to suggest hierarchy. Haptic feedback when expanding or collapsing can add to the sense of control, making the sheet feel more tactile and responsive.
Variations include modal bottom sheets that block interaction with the rest of the interface, persistent bottom sheets that stay pinned as part of navigation, and expandable sheets that can grow from a compact state to a full-screen view. With careful motion and structure, bottom sheets can feel like a natural, seamless extension of the interface.
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