Sloth UI Mobile

Using sloth-ui-mobile

This skill provides instructions for using the @rapid-recovery-agency-inc/sloth-ui-mobile design system library in a React Native app.

For the complete component catalog and Figma design links, see references/component-catalog.md. If you need UI components from react-native core, review the component catalog first.

Preferences

1. SHOULD AVOID using hardcoded color values (hex, rgb, rgba) in styles. Use theme color tokens instead.
2. SHOULD AVOID using inline styles. Use createThemeStyleSheet + useThemedStyles instead.
3. SHOULD AVOID creating styles with font-* or color properties directly. Use MainText or theme tokens.
4. SHOULD AVOID using deprecated components.
5. PREFER importing all components from '@rapid-recovery-agency-inc/sloth-ui-mobile'.
6. PREFER using createThemeStyleSheet instead of StyleSheet.create to ensure theme compatibility.
7. PREFER using MainText for all text rendering, never raw <Text> from React Native.
8. PREFER using the themeColor prop on MainText and Icon — the color prop is deprecated on both.
9. PREFER using <Background> and <Container> for layout structure instead of manually setting background colors on <View>.
10. PREFER using the LoaderV2 component instead of ActivityIndicator.
11. PREFER using the DividerV2 component instead of a custom view.
12. PREFER using the Button component instead of TouchableOpacity.

Theming System

The library uses semantic color tokens that automatically resolve to light/dark mode values. The theming pipeline is:

createThemeStyleSheet → useThemedStyles → resolved StyleSheet

Step 1: Define Styles with createThemeStyleSheet

Define styles outside the component. Use theme token names (strings) for any color-related property instead of hardcoded hex values.

Token-supported properties: color, backgroundColor, borderColor, borderTopColor, borderRightColor, borderBottomColor, borderLeftColor, shadowColor, textDecorationColor, textShadowColor, tintColor, overlayColor.

import {
  createThemeStyleSheet,
  DeviceSize,
} from "@rapid-recovery-agency-inc/sloth-ui-mobile";

const styleSheet = createThemeStyleSheet({
  container: {
    backgroundColor: "bgSurfaceBase", // theme token, NOT a hex value
    padding: 16,
  },
  titleContainer: {
    marginBottom: 12,
    flexDirection: "row",
    alignItems: "center",
    backgroundColor: "bgSurfaceElevated",
    [DeviceSize.LG]: {
      padding: 24,
    },
  },
});

Step 2: Consume Styles with useThemedStyles

Call useThemedStyles inside the component. It resolves theme tokens to actual colors AND applies responsive breakpoints.

import { useThemedStyles } from '@rapid-recovery-agency-inc/sloth-ui-mobile';

const MyComponent = () => {
  const styles = useThemedStyles(styleSheet);
  return <View style={styles.container}>...</View>;
};

Dynamic Styles (Factory Pattern)

useThemedStyles accepts either a style object or a factory function. The factory function receives the current colors object, allowing for dynamic logic:

import { useThemedStyles, createThemeStyleSheet } from '@rapid-recovery-agency-inc/sloth-ui-mobile';

const MyComponent = ({ isActive }) => {
  const styles = useThemedStyles((colors) => ({
    container: {
      backgroundColor: isActive ? colors.bgBrandSoft : colors.bgSurfaceBase,
      borderWidth: 1,
      borderColor: colors.uiPrimary,
    },
  }));

  return <View style={styles.container} />;
};

Using Colors Outside Styles

Don't use useThemeColor when you need a color value, create a new class object inside of createThemeStyleSheet and use it.

PREFER. useTheme() to get the colors object.

import {
  createThemeStyleSheet,
  useThemedStyles,
  useTheme,
  Background,
  MainText,
  Icon
} from "@rapid-recovery-agency-inc/sloth-ui-mobile";

const Component = () => {
  const { colors } = useTheme();
  const styles = useThemedStyles(styleSheet);

  return (
    <Background style={styles.background}>
      <MainText themeColor="fgPrimary" type="BOOK_LG">Content here</MainText>
      <Icon iconName="check" size={18} color={colors.fgPrimary} />
    </Background>
  );
}

const styleSheet = createThemeStyleSheet({
  background: {
    backgroundColor: "bgSurfaceElevated", // theme token string, NOT a hex value
    padding: 16,
  },
});

In this example, MainText should still use themeColor because that API accepts a token. The Icon uses color={colors.fgPrimary} only to demonstrate the fallback pattern for APIs that need a resolved color value.

Theme Color Tokens

Tokens follow a naming convention: {category}{Semantic}.

Special tokens: transparent (always transparent), bgPositionGold/Silver/Bronze (leaderboard).

Responsive Styles

useThemedStyles handles responsiveness automatically. Define breakpoint-specific overrides using DeviceSize keys inside any style:

import {
  createThemeStyleSheet,
  DeviceSize,
} from "@rapid-recovery-agency-inc/sloth-ui-mobile";

const styleSheet = createThemeStyleSheet({
  container: {
    padding: 16, // default (all sizes)
    [DeviceSize.MD]: { padding: 24 }, // tablets
    [DeviceSize.LG]: { padding: 32 }, // large tablets
  },
});

Breakpoints: XS (<400px), SM (≤700px), MD (700-1024px), LG (1024-1200px), XL (≥1200px).

Device-Adaptive Component Rendering

Use selectRenderV2 to render entirely different components for phone vs tablet:

import { selectRenderV2 } from '@rapid-recovery-agency-inc/sloth-ui-mobile';

const MyScreen = () => selectRenderV2({
  NormalComponent: <PhoneLayout />,
  LargeComponent: <TabletLayout />,
});

LargeComponent renders on MD, LG, XL. NormalComponent renders on XS, SM.

Responsive Breakpoints

PREFER using for responsive design isLargeDevice over DeviceSize.

Layout Components

Two backbone components ensure consistent background coloring and Dark Mode support for layout structure.

<Background>

Represents the base background of a screen or section.

• Default style: backgroundColor: 'bgSurfaceBase'
• Use case: Top-level wrappers for screens

<Container>

Represents a content block or card-like container.

• Default style: backgroundColor: 'bgSurfaceElevated'
• Use case: Cards, sections, list items
• Supports border shorthand props for quick styling

Border Props (all use uiPrimary color by default):

borderTop, borderBottom, borderLeft, borderRight, borderHorizontal, borderVertical, borderAll

Allowed Style Props (both components accept ContainerViewStyle — layout properties only):

padding, margin (and variations), flex, flexDirection, justifyContent, alignItems, width, height, gap, borderRadius

import { Background, Container, useThemedStyles, createThemeStyleSheet, MainText } from '@rapid-recovery-agency-inc/sloth-ui-mobile';

const Component = () => {
  const styles = useThemedStyles(styleSheet);

  return (
    <Background style={styles.background}>
      <Container borderBottom style={styles.container}>
        <MainText themeColor="fgPrimary" type="BOOK_LG">Content here</MainText>
      </Container>
    </Background>
  )
}

const styleSheet = createThemeStyleSheet({
  background: {
    flex: 1,
  },
  container: {
    padding: 16,
  },
});

Text Component

MUST use MainText for all text. Never use React Native's <Text> directly.

import { MainText } from '@rapid-recovery-agency-inc/sloth-ui-mobile';

<MainText type="BOLD_LG" themeColor="fgPrimary">Hello</MainText>
<MainText type="BOOK_SM" themeColor="fgSecondary">Subtitle</MainText>
<MainText type="BLACK_XL" themeColor="fgBrandContrast">Heading</MainText>

Text Type Format

{Weight}_{Size} where:

• Weights: BLACK (900), BOLD (700), BOOK (400)
• Sizes: XXS (10px), XS (12px), SM (14px), MD (16px), LG (18px), XL (20px), XL2 (22px), XL3 (24px), XL4 (26px), XL5 (32px), XL6 (40px), XL7 (48px), XL8 (64px)

Font family: CircularStd (Black, Bold, Book).

Text Color

// ❌ Deprecated
<MainText color="primary" type="BOOK_LG">Hello</MainText>

// ✅ Correct
<MainText themeColor="fgPrimary" type="BOOK_LG">Hello</MainText>

Icon Component

MUST use themeColor prop. The color prop is deprecated.

import { Icon } from '@rapid-recovery-agency-inc/sloth-ui-mobile';

// ❌ Deprecated
<Icon iconName="user" color="#000" />
<Icon iconName="clock" color={Color.GRAY2} />

// ✅ Correct
<Icon iconName="user" themeColor="fgPrimary" />
<Icon iconName="clock" themeColor="fgSecondary" solid />

Button Component

Buttons use theme colors internally for backgrounds and text.

import { Button } from '@rapid-recovery-agency-inc/sloth-ui-mobile';

<Button text="Save" color="blue" size="lg" variant="solid" />
<Button text="Cancel" color="grey" variant="transparent" />
<Button text="Delete" color="red" size="sm" loading={isDeleting} />
<Button leftIcon="plus" text="Add" color="green" />

Props:

• size: 'xl' | 'lg' (default) | 'sm'
• color: 'blue' (default) | 'grey' | 'green' | 'orange' | 'red'
• variant: 'solid' (default) | 'transparent'
• loading: shows spinner, disables press
• disabled: reduces opacity, disables press
• leftIcon / rightIcon: FontAwesome icon name (mutually exclusive)

Note: MainButton and PlainButton are deprecated. Use Button for all new code.

Common Components Quick Reference

Complete Example

import {
  createThemeStyleSheet,
  useThemedStyles,
  MainText,
  Button,
  Pill,
  Icon,
  Background,
  Container,
  DeviceSize,
} from '@rapid-recovery-agency-inc/sloth-ui-mobile';
import { View } from 'react-native';

export const VehicleCard = ({ vehicle, onSpot }: VehicleCardProps) => {
  const styles = useThemedStyles(styleSheet);

  return (
    <Background style={styles.background}>
      <Container borderBottom style={styles.card}>
        <View style={styles.header}>
          <MainText type="BOLD_LG" themeColor="fgPrimary">{vehicle.make}</MainText>
          <Pill color="green" variant="soft" size="sm">{vehicle.status}</Pill>
        </View>
        <MainText type="BOOK_SM" themeColor="fgSecondary">{vehicle.plate}</MainText>
        <View style={styles.actions}>
          <Icon iconName="camera" size={18} themeColor="fgSecondary" solid />
          <Button
            text="Spot Vehicle"
            color="blue"
            size="lg"
            leftIcon="camera"
           
          />
        </View>
      </Container>
    </Background>
  );
};

const styleSheet = createThemeStyleSheet({
  background: {
    flex: 1,
  },
  card: {
    padding: 16,
    [DeviceSize.MD]: { padding: 24 },
  },
  header: {
    flexDirection: 'row',
    justifyContent: 'space-between',
    alignItems: 'center',
    marginBottom: 8,
  },
  actions: {
    marginTop: 16,
    paddingTop: 16,
    gap: 12,
  },
});

Deprecated APIs