OneKey UI Recipes Skill

OneKey UI Recipes

Bite-sized solutions for common UI issues.

Quick Reference

| Recipe | Guide | Key Points | |--------|-------|------------| | iOS Tab Bar Scroll Offset | ios-tab-bar-scroll-offset.md | Use useScrollContentTabBarOffset for paddingBottom on iOS tab pages | | Smooth State Transitions | start-view-transition.md | Wrap heavy state updates in startViewTransition for fade on web | | Horizontal Scroll in Collapsible Tab Headers | collapsible-tab-horizontal-scroll.md | Bidirectional Gesture.Pan() + programmatic scrollTo via CollapsibleTabContext | | Android Bottom Tab Touch Interception | android-bottom-tab-touch-intercept.md | Temporary — GestureDetector + Gesture.Tap() in .android.tsx to bypass native tab bar touch stealing | | Keyboard Avoidance for Input Fields | keyboard-avoidance.md | KeyboardAwareScrollView auto-scroll, Footer animated padding, useKeyboardHeight / useKeyboardEvent hooks | | iOS Overlay Navigation Freeze | ios-overlay-navigation-freeze.md | Use resetAboveMainRoute() instead of sequential goBack() to close overlays before navigating | | Web keyboardDismissMode Cross-Tab Blur | — | Never use on-drag on web; it globally blurs inputs via TextInputState | | iOS Modal Fabric Frame Animation | ios-modal-fabric-frame-animation.md | Fabric recycled views retain stale frames; wrap updateLayoutMetrics in performWithoutAnimation during modal transition |

Critical Rules Summary

1. iOS Tab Bar Scroll Content Offset

Use useScrollContentTabBarOffset to add dynamic paddingBottom to scroll containers inside tab pages. Returns tab bar height on iOS, undefined on other platforms.

import { useScrollContentTabBarOffset } from '@onekeyhq/components';

const tabBarHeight = useScrollContentTabBarOffset();
<ScrollView contentContainerStyle={{ paddingBottom: tabBarHeight }} />

2. Smooth State Transitions with `startViewTransition`

Wrap heavy state updates in startViewTransition — fade on web/desktop via View Transition API, setTimeout fallback on native.

import { startViewTransition } from '@onekeyhq/components';

startViewTransition(() => {
  setIsReady(true);
});

3. Horizontal Scroll in Collapsible Tab Headers (Native)

When placing a horizontal scroller inside renderHeader of collapsible tabs, use Gesture.Pan() that handles both directions — horizontal drives translateX, vertical calls scrollTo on the focused tab's ScrollView via CollapsibleTabContext.

import { CollapsibleTabContext } from '@onekeyhq/components';

Do NOT import directly from react-native-collapsible-tab-view/src/Context. Always use the @onekeyhq/components re-export.

4. Android Bottom Tab Touch Interception (Temporary Workaround)

Temporary fix — the root cause is react-native-bottom-tabs intercepting touches even when hidden. This workaround should be removed once the upstream issue is fixed.

On Android, react-native-bottom-tabs intercepts touches in the tab bar region even when the tab bar is GONE. Buttons near the bottom of the screen become unclickable. Fix by creating a .android.tsx variant that wraps buttons with GestureDetector + Gesture.Tap():

import { Gesture, GestureDetector } from 'react-native-gesture-handler';
import { runOnJS } from 'react-native-reanimated';

const tapGesture = useMemo(
  () => Gesture.Tap().onEnd(() => { 'worklet'; runOnJS(onPress)(); }),
  [onPress],
);

<GestureDetector gesture={tapGesture}>
  <View>
    <Button>Label</Button>
  </View>
</GestureDetector>

Use .android.tsx file extension so other platforms are unaffected.

5. Keyboard Avoidance for Input Fields

Standard Page and Dialog components handle keyboard avoidance automatically. Only add manual handling for custom layouts.

Page inputs: Automatic — PageContainer wraps with KeyboardAwareScrollView (90px bottomOffset)
Page Footer: Automatic — animates paddingBottom via useReanimatedKeyboardAnimation
Dialog: Automatic — keyboard avoidance is handled at the Dialog level for all dialogs (including showFooter: false)
Custom layout: Use Keyboard.AwareScrollView with custom bottomOffset

import { Keyboard } from '@onekeyhq/components';

// Custom scrollable area with keyboard avoidance
<Keyboard.AwareScrollView bottomOffset={150}>
  {/* inputs */}
</Keyboard.AwareScrollView>

// Dismiss keyboard before navigation
await Keyboard.dismissWithDelay();

Hooks for custom behavior:

import { useKeyboardHeight, useKeyboardEvent } from '@onekeyhq/components';

const height = useKeyboardHeight(); // 0 when hidden

useKeyboardEvent({
  keyboardWillShow: (e) => { /* e.endCoordinates.height */ },
  keyboardWillHide: () => { /* ... */ },
});

Use useKeyboardEventWithoutNavigation for components outside NavigationContainer (Dialog, Modal).

6. iOS Overlay Navigation Freeze (`resetAboveMainRoute`)

On iOS with native UITabBarController, closing overlay routes (Modal, FullScreenPush) via sequential goBack() calls triggers an RNSScreenStack window-nil race condition. Popped pages' screen stacks lose their iOS window reference and enter a retry storm (50 retries × ~100ms), freezing navigation for ~5 seconds.

Symptom: After closing a modal, the app appears stuck on the home page. A touch on the screen "unsticks" navigation.

Root cause: goBack() triggers animated modal dismiss. Screen stacks inside detached tab views get window=NIL and retry indefinitely until the retry limit (50) is exhausted.

Fix: Use resetAboveMainRoute() to atomically remove all overlay routes via CommonActions.reset instead of sequential goBack() calls.

import { resetAboveMainRoute, rootNavigationRef } from '@onekeyhq/components';

// ❌ WRONG: Sequential goBack() causes iOS window-nil freeze
const closeModalPages = async () => {
  rootNavigationRef.current?.goBack();
  await timerUtils.wait(150);
  await closeModalPages(); // recursive — each call triggers native animation
};
await closeModalPages();
await timerUtils.wait(250);
rootNavigationRef.current?.navigate(targetRoute);

// ✅ CORRECT: Atomic reset, no orphaned screen stacks
resetAboveMainRoute();
await timerUtils.wait(100);
rootNavigationRef.current?.navigate(targetRoute);

Key file: packages/components/src/layouts/Navigation/Navigator/NavigationContainer.tsx Reference: commit 2cabd040 (OK-50182) — same fix applied to scan QR code navigation.

7. Web: ScrollView `keyboardDismissMode="on-drag"` Causes Cross-Tab Input Blur

On web, react-native-web's keyboardDismissMode="on-drag" calls dismissKeyboard() on every scroll event. dismissKeyboard() uses TextInputState — a global singleton that tracks the currently focused input across the entire app, not scoped to individual tabs. This means a ScrollView scrolling on a background tab (e.g. Home) will blur an input on the active tab (e.g. Perps).

Symptom: Input fields lose focus periodically (~every 5 seconds) without user interaction.

Root cause chain:

Carousel on Home tab has autoPlayInterval={5000} → triggers scroll every 5s
Web PagerView uses <ScrollView keyboardDismissMode="on-drag"> → dismissKeyboard() on scroll
dismissKeyboard() → TextInputState.blurTextInput(currentlyFocusedField()) → blurs Perps input

Fix (two layers):

Carousel/pager.tsx (web-only): Force keyboardDismissMode="none" — web has no virtual keyboard, so dismiss is pure side-effect
Carousel/index.tsx: Pause auto-play via IntersectionObserver when the Carousel is not visible in viewport

Rules:

NEVER use keyboardDismissMode="on-drag" on web ScrollViews that may run in background tabs. On web, it globally blurs the focused input via TextInputState.
For Carousel/PagerView, the web pager.tsx already forces "none". For standalone ScrollViews, wrap with platformEnv.isNative if on-drag is needed only on mobile.
Background Carousel auto-play should be paused when not visible (IntersectionObserver).

// ❌ WRONG: Will blur inputs on other tabs when this ScrollView scrolls
<ScrollView keyboardDismissMode="on-drag" />

// ✅ CORRECT: Only use on-drag on native
<ScrollView keyboardDismissMode={platformEnv.isNative ? 'on-drag' : 'none'} />

Key files: packages/components/src/composite/Carousel/pager.tsx, packages/components/src/composite/Carousel/index.tsx

8. iOS Modal Content Displacement During Presentation (Fabric)

On iOS with Fabric (New Architecture), modal pages (pageSheet/formSheet) show content flying in from wrong positions during the slide-up animation. Root cause: Fabric recycles native views that retain stale frames; when mounted during modal transition, UIKit captures the frame correction as an implicit animation.

Fix: Wrap Fabric's updateLayoutMetrics and invalidateLayer in UIView.performWithoutAnimation: during modal transitions using a global RNSModalTransitionInProgress flag.

// In UIView+ComponentViewProtocol.mm updateLayoutMetrics:
extern BOOL RNSModalTransitionInProgress;
if (RNSModalTransitionInProgress) {
    [UIView performWithoutAnimation:^{
        self.center = CGPoint{CGRectGetMidX(frame), CGRectGetMidY(frame)};
        self.bounds = CGRect{CGPointZero, frame.size};
        [self layoutIfNeeded];
    }];
}

Key files: patches/react-native-screens+4.23.0.patch, patches/react-native+0.81.5.patch Reference: ios-modal-fabric-frame-animation.md

Related Skills

/1k-cross-platform - Platform-specific development
/1k-performance - Performance optimization
/1k-coding-patterns - General coding patterns

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