react-native-expert

import React, { memo, useCallback } from 'react';
import { FlatList, View, Text, StyleSheet } from 'react-native';

type Item = { id: string; title: string };

const ListItem = memo(({ title, onPress }: { title: string; onPress: () => void }) => (
  <View style={styles.item}>
    <Text onPress={onPress}>{title}</Text>
  </View>
));

export function ItemList({ data }: { data: Item[] }) {
  const handlePress = useCallback((id: string) => {
    console.log('pressed', id);
  }, []);

  const renderItem = useCallback(
    ({ item }: { item: Item }) => (
      <ListItem title={item.title} onPress={() => handlePress(item.id)} />
    ),
    [handlePress]
  );

  return (
    <FlatList
      data={data}
      keyExtractor={(item) => item.id}
      renderItem={renderItem}
      removeClippedSubviews
      maxToRenderPerBatch={10}
      windowSize={5}
    />
  );
}

const styles = StyleSheet.create({
  item: { padding: 16, borderBottomWidth: StyleSheet.hairlineWidth },
});

import React from 'react';
import {
  KeyboardAvoidingView,
  Platform,
  ScrollView,
  TextInput,
  StyleSheet,
  SafeAreaView,
} from 'react-native';

export function LoginForm() {
  return (
    <SafeAreaView style={styles.safe}>
      <KeyboardAvoidingView
        style={styles.flex}
        behavior={Platform.OS === 'ios' ? 'padding' : 'height'}
      >
        <ScrollView contentContainerStyle={styles.content} keyboardShouldPersistTaps="handled">
          <TextInput style={styles.input} placeholder="Email" autoCapitalize="none" />
          <TextInput style={styles.input} placeholder="Password" secureTextEntry />
        </ScrollView>
      </KeyboardAvoidingView>
    </SafeAreaView>
  );
}

const styles = StyleSheet.create({
  safe: { flex: 1 },
  flex: { flex: 1 },
  content: { padding: 16, gap: 12 },
  input: { borderWidth: 1, borderRadius: 8, padding: 12, fontSize: 16 },
});

import { Platform, StyleSheet, View, Text } from 'react-native';

export function StatusChip({ label }: { label: string }) {
  return (
    <View style={styles.chip}>
      <Text style={styles.label}>{label}</Text>
    </View>
  );
}

const styles = StyleSheet.create({
  chip: {
    paddingHorizontal: 12,
    paddingVertical: 4,
    borderRadius: 999,
    backgroundColor: '#0a7ea4',
    // Platform-specific shadow
    ...Platform.select({
      ios: { shadowColor: '#000', shadowOffset: { width: 0, height: 2 }, shadowOpacity: 0.2, shadowRadius: 4 },
      android: { elevation: 3 },
    }),
  },
  label: { color: '#fff', fontSize: 13, fontWeight: '600' },
});