React Native: What are React Native hooks and their common patterns?

Built-in hooks:

• useState: local state
• useEffect: side effects
• useContext: context consumption
• useMemo: memoized values
• useCallback: memoized functions
• useRef: mutable references
• useReducer: complex state logic

Custom hooks:

1function useOnlineStatus() {
2  const [isOnline, setIsOnline] = useState(true);
3
4  useEffect(() => {
5    const unsubscribe = NetInfo.addEventListener((state) => {
6      setIsOnline(state.isConnected);
7    });
8    return unsubscribe;
9  }, []);
10
11  return isOnline;
12}

Best practices:

• Extract reusable logic into custom hooks
• Follow naming convention: use*
• Don't call hooks conditionally
• Keep hooks focused and small