列表

import { useState } from 'react';
import { useColorScheme } from 'react-native';
import { Host, List, ListItem, Text } from '@expo/ui';

const ITEMS = [
  { id: 1, name: 'Avocado toast' },
  { id: 2, name: 'Bagel with cream cheese' },
  { id: 3, name: 'Cappuccino' },
];

export default function ListExample() {
  const [selected, setSelected] = useState<string | null>(null);
  const colorScheme = useColorScheme();
  const ink = { color: colorScheme === 'dark' ? '#FFFFFF' : '#000000' };

  return (
    <Host style={{ flex: 1 }}>
      <List>
        {ITEMS.map(item => (
          <ListItem key={item.id} onPress={() => setSelected(item.name)}>
            {item.name}
          </ListItem>
        ))}
      </List>
      {selected != null && <Text textStyle={ink}>{`Selected: ${selected}`}</Text>}
    </Host>
  );
}

import { Host, Icon, List, ListItem } from '@expo/ui';

const CHEVRON = Icon.select({
  ios: 'chevron.right',
  android: require('@expo/material-symbols/chevron_right.xml'),
});

export default function ListItemSlotsExample() {
  return (
    <Host style={{ flex: 1 }}>
      <List>
        <ListItem
          onPress={() => {}}
          trailing={<Icon name={CHEVRON} size={14} color="gray" />}
          supportingText="Secondary line below the headline">
          Profile
        </ListItem>
        <ListItem onPress={() => {}} trailing={<Icon name={CHEVRON} size={14} color="gray" />}>
          Settings
        </ListItem>
      </List>
    </Host>
  );
}

import { useColorScheme } from 'react-native';
import { Host, Icon, List, ListItem, Row, Text } from '@expo/ui';

const STAR = Icon.select({
  ios: 'star.fill',
  android: require('@expo/material-symbols/star.xml'),
});

export default function ListItemCompoundExample() {
  const colorScheme = useColorScheme();
  const ink = { color: colorScheme === 'dark' ? '#FFFFFF' : '#000000' };

  return (
    <Host style={{ flex: 1 }}>
      <List>
        <ListItem onPress={() => {}}>
          <ListItem.Leading>
            <Icon name={STAR} size={20} color="#FFD60A" />
          </ListItem.Leading>
          <Row spacing={0}>
            <Text textStyle={{ color: 'gray' }}>{`#42: `}</Text>
            <Text textStyle={ink}>Composite headline</Text>
          </Row>
          <ListItem.Supporting>Richer slot content</ListItem.Supporting>
        </ListItem>
      </List>
    </Host>
  );
}

import { useState } from 'react';
import { Host, List, ListItem } from '@expo/ui';

export default function ListRefreshExample() {
  const [items, setItems] = useState([1, 2, 3]);

  const handleRefresh = async () => {
    await new Promise(resolve => setTimeout(resolve, 1500));
    setItems(prev => [Math.max(...prev) + 1, ...prev]);
  };

  return (
    <Host style={{ flex: 1 }}>
      <List onRefresh={handleRefresh}>
        {items.map(id => (
          <ListItem key={id}>{`Item #${id}`}</ListItem>
        ))}
      </List>
    </Host>
  );
}