如何在HarmonyOS端获取RNInstance的getNextSurfaceTag方法产生的tag

import React, { useContext } from "react"; 
import { View, Text, RootTag, RootTagContext } from 'react-native'; 
 
const App = () => { 
  const rootTag: RootTag = useContext(RootTagContext); 
  return ( 
    <View style={{ flex: 1, marginTop: 50 }}> 
  <Text style={{ color: 'red', fontWeight: 'bold' }} onPress={() => console.log(rootTag)}> 
  点我获取RootTag 
  </Text> 
  </View> 
); 
} 
 
export default App;