truesheet-usage

TrueSheet Consumer Guide

Use this skill to produce correct, idiomatic code for apps that consume @lodev09/react-native-true-sheet (v4). It covers choosing the right integration pattern, applying the public API correctly, and avoiding platform-specific pitfalls.

Requires React Native >= 0.82 (Expo SDK 55+) with the New Architecture.

Quick Start

The simplest sheet: a ref, a button, and some content.

import { useRef } from 'react'
import { Button, Text, View } from 'react-native'
import { TrueSheet } from '@lodev09/react-native-true-sheet'

export function App() {
  const sheet = useRef<TrueSheet>(null)

  return (
    <View>
      <Button title="Open" onPress={() => sheet.current?.present()} />
      <TrueSheet ref={sheet} detents={['auto']} cornerRadius={24} grabber>
        <View style={{ padding: 16 }}>
          <Text>Hello from the sheet</Text>
          <Button title="Close" onPress={() => sheet.current?.dismiss()} />
        </View>
      </TrueSheet>
    </View>
  )
}

Content Layout (v4)

The sheet's content lays out naturally — it wraps its children's height like a regular view or a React Navigation screen. It does not fill the sheet by default. Consequences:

• A flex: 1 child collapses to zero height unless the content is filled.
• To fill the sheet's visible height per detent (spacers, centered content, bounded scroll views), pass flex: 1 via the sheet's style prop:

<TrueSheet style={{ flex: 1 }} detents={[0.5, 1]}>
  <View style={{ flex: 1, justifyContent: 'center' }}>
    <Text>Centered</Text>
  </View>
</TrueSheet>

The content is sized to the sheet's visible height per detent and tracks it in realtime while dragging, so flex layouts follow the sheet's edge frame-by-frame.

Choose the Right Control Pattern

Pick one based on where the trigger lives relative to the sheet and which platforms you target.

Ref-based

Already shown in Quick Start. Use present(), dismiss(), resize(index) on the ref.

Named sheet with global methods (native only)

When the trigger is far from where the sheet renders:

// Somewhere in the tree
<TrueSheet name="profile" detents={['auto', 1]}>
  <ProfileContent />
</TrueSheet>

// Anywhere else (native only)
await TrueSheet.present('profile')
await TrueSheet.dismiss('profile')
await TrueSheet.resize('profile', 1)
await TrueSheet.dismissAll()

Every name must be unique. Static methods don't exist on web — use the provider pattern instead.

Web control with provider

Wrap your app with TrueSheetProvider (on native this is a pass-through with zero overhead). Web also needs @radix-ui/react-dialog and @radix-ui/react-presence installed (optional peer deps):

import { TrueSheet, TrueSheetProvider, useTrueSheet } from '@lodev09/react-native-true-sheet'

function Toolbar() {
  const { present, dismiss } = useTrueSheet()
  return <Button title="Open" onPress={() => present('settings')} />
}

export function App() {
  return (
    <TrueSheetProvider>
      <Toolbar />
      <TrueSheet name="settings" detents={[0.5, 1]}>
        <SettingsContent />
      </TrueSheet>
    </TrueSheetProvider>
  )
}

Navigation (React Navigation / Expo Router)

See advanced patterns reference for full setup with createTrueSheetNavigator, the static API (createTrueSheetScreen), the Expo Router Sheet layout from /navigation/expo-router, screen options, and useTrueSheetNavigation.

Reanimated

See advanced patterns reference for ReanimatedTrueSheet, ReanimatedTrueSheetProvider, and animated values (animatedPosition, animatedIndex, animatedDetent).

Detents

Detents define the heights the sheet can snap to. You get up to 3 detents, sorted smallest to largest. Default: [0.5, 1].

// Content-sized sheet
<TrueSheet detents={['auto']} />

// Half and full screen
<TrueSheet detents={[0.5, 1]} />

// Collapsed summary that expands to near-full
<TrueSheet detents={['peek', 0.9]} />

Common Recipes

Scrollable content

Point the sheet at your scroll view with scrollableRef. For fixed detents, bound the scroll view with flex: 1 on the sheet's style:

const scrollableRef = useRef<ScrollView>(null)

<TrueSheet scrollableRef={scrollableRef} style={{ flex: 1 }} detents={[0.5, 1]} grabber>
  <ScrollView ref={scrollableRef}>
    {items.map(item => <ItemRow key={item.id} item={item} />)}
  </ScrollView>
</TrueSheet>

• With detents={['auto']} no flex: 1 is needed — the sheet sizes to the scroll content and bounds the viewport automatically
• The scroll view doesn't have to be a direct child — a wrapping View works
• Keyboard handling, nested scrolling (Android), and the bottom safe-area inset are wired automatically
• Scrolling to top expands to the next detent — disable with scrollableOptions={{ scrollingExpandsSheet: false }} (YouTube-style comments)
• The bottom safe-area inset is applied natively while content can scroll — don't add manual safe-area padding, or opt out with scrollableOptions={{ contentInsetAdjustmentBehavior: false }}

Fixed header and footer

<TrueSheet
  detents={[0.5, 1]}
  scrollableRef={scrollableRef}
  style={{ flex: 1 }}
  header={
    <View style={{ padding: 16 }}>
      <Text style={{ fontSize: 18, fontWeight: 'bold' }}>Title</Text>
    </View>
  }
  footer={<BottomActions />}
>
  <ScrollView ref={scrollableRef}>{/* ... */}</ScrollView>
</TrueSheet>

• Use the header and footer props — they render in native container views, so the layout math is handled for you. Don't fake it with absolute positioning.
• Both are relative by default: header takes space above the content, footer below it, and both count toward the 'auto' detent.
• The footer absorbs the bottom safe-area inset natively — remove manual paddingBottom: insets.bottom from footer content or it doubles up. Set the footer background via footerStyle so it fills the inset.
• A relative footer is laid out below the content — with fixed detents, bound the content with flex: 1 (sheet style) so the footer stays visible.
• To float them over the content instead (excluded from 'auto' height), use headerOptions={{ position: 'absolute' }} / footerOptions={{ position: 'absolute' }}. An absolute footer rises above the keyboard; a relative one stays in the layout flow behind it.

Peeking (map-style collapsed sheet)

import { TrueSheet, TrueSheetPeek } from '@lodev09/react-native-true-sheet'

<TrueSheet detents={['peek', 0.9]} initialDetentIndex={0} header={<Summary />}>
  <TrueSheetPeek>
    <QuickActions />
  </TrueSheetPeek>
  <FullDetails />
</TrueSheet>

Collapsed, the sheet shows everything from the top through the bottom edge of TrueSheetPeek; content below stays hidden until expanded. An empty <TrueSheetPeek /> works as a fold marker between existing views. One peek component per sheet. Absolute footers count toward the peek height; relative footers don't (pushed off-screen at peek).

Toasts and dialogs above sheets

import { TrueSheet, TrueSheetOverlay } from '@lodev09/react-native-true-sheet'

<TrueSheetOverlay>
  {toast && <Toast message={toast} />}
</TrueSheetOverlay>

Renders children in a native layer above every presented sheet. Show/hide by conditionally rendering children. Fills the window; touches that miss the children pass through. Never use RN Modal/FullWindowOverlay for this anymore.

Non-dismissible confirmation

<TrueSheet
  ref={sheet}
  detents={['auto']}
  dismissible={false}
  draggable={false}
  dimmed
  grabber={false}
>
  <View style={{ padding: 24 }}>
    <Text>Are you sure?</Text>
    <Button title="Confirm" onPress={handleConfirm} />
    <Button title="Cancel" onPress={() => sheet.current?.dismiss()} />
  </View>
</TrueSheet>

iOS blur background

<TrueSheet detents={['auto']} backgroundBlur="system-material">
  <View style={{ padding: 16 }}>
    <Text>Blurred sheet</Text>
  </View>
</TrueSheet>

Fine-tune with blurOptions={{ intensity: 80, interaction: true }}. Blur is iOS-only.

Present on mount

<TrueSheet detents={['auto', 1]} initialDetentIndex={0} initialDetentAnimated>
  <WelcomeContent />
</TrueSheet>

Dimming control

// No dimming (allows background interaction)
<TrueSheet dimmed={false} detents={['auto']} />

// Dim only above a certain detent
<TrueSheet detents={['auto', 0.7, 1]} dimmedDetentIndex={1} />

Resize programmatically

resize() takes a detent index, not a value:

const sheet = useRef<TrueSheet>(null)

// detents={[0.3, 0.6, 1]}
await sheet.current?.resize(2) // expands to full (index 2)

Rules That Save Debugging Time

1. Max 3 detents, sorted smallest → largest.
2. Content doesn't fill the sheet by default — pass style={{ flex: 1 }} on the sheet when children use flex: 1, or they render with zero height.
3. `scrollableRef` replaces the v3 `scrollable` prop — pass a ref of the ScrollView/FlatList. Bound it with flex: 1 on the sheet style for fixed detents; 'auto' needs no flex.
4. `resize()` takes an index, not a fraction. resize(1) means "go to the second detent."
5. Sheet names must be unique across your entire app.
6. Static methods are native-only — use useTrueSheet() on web.
7. Don't add manual safe-area padding to footers or plugged scroll content — the footer absorbs the bottom inset and the scrollable gets it natively. Doubling up is the most common v4 layout bug.
8. Don't use `autoFocus` on TextInputs inside sheets. Focus in onDidPresent instead:

   <TrueSheet onDidPresent={() => inputRef.current?.focus()}>

1. Use `flexGrow: 1` (not flex: 1) on GestureHandlerRootView inside the sheet on Android — unless the sheet itself has style={{ flex: 1 }}.
2. Dismiss sheets before closing Modals on iOS — React Native has a bug where dismissing a Modal while a sheet is visible causes a blank screen.
3. Use `header`/`footer` props for fixed chrome — don't reach for absolute positioning. Float them with headerOptions/footerOptions position: 'absolute' when they should overlay content.
4. Liquid Glass is automatic on iOS 26+. Set backgroundColor or backgroundBlur to disable it per-sheet (iOS 26.1+), or add UIDesignRequiresCompatibility to Info.plist to disable app-wide.

Platform Differences at a Glance

Events

The most commonly used events:

For the full event list (drag events, focus/blur events, will/did lifecycle pairs, onBackPress), see the API reference.

Methods

On a ref:

• present(index?, animated?) — show the sheet
• dismiss(animated?) — hide the sheet and all its children
• dismissStack(animated?) — hide only sheets stacked on top
• resize(index) — snap to a detent by index

Global (native only):

• TrueSheet.present(name, index?, animated?)
• TrueSheet.dismiss(name, animated?)
• TrueSheet.dismissStack(name, animated?)
• TrueSheet.resize(name, index)
• TrueSheet.dismissAll(animated?)

Web hook:

const { present, dismiss, dismissStack, resize, dismissAll } = useTrueSheet()

Stacking Sheets

Present a new sheet while another is visible and the first one hides automatically. Dismiss the top sheet and the previous one comes back. This is built-in — no extra config needed.

• dismiss() cascades: it dismisses the current sheet plus everything stacked on top
• dismissStack() dismisses only the sheets on top, keeping the current one visible
• Use onDidFocus / onDidBlur to react to a sheet gaining or losing the top position

Deep-Dive References

When you need the full picture, load these reference files: