react-native/App.tsx

46 lines
1.3 KiB
TypeScript

import { NewAppScreen } from '@react-native/new-app-screen'
import { useEffect, useState } from 'react'
import { StatusBar, Text, StyleSheet, useColorScheme, View } from 'react-native'
import { NativeEventEmitter, NativeModules } from 'react-native'
const { Emitter } = NativeModules
import { requireNativeComponent } from 'react-native'
import type { StyleProp, ViewStyle } from 'react-native'
type CustomButtonProps = {
style?: StyleProp<ViewStyle>
}
const CustomButton = requireNativeComponent<CustomButtonProps>('CustomButton')
export default function App() {
const isDarkMode = useColorScheme() === 'dark'
const [message, setMessage] = useState(null)
useEffect(() => {
const emitter = new NativeEventEmitter(Emitter);
const subscription = emitter.addListener('onMessage', (event) => {
if (event?.message) {
setMessage(event.message)
}
})
return () => {
subscription.remove()
};
}, [])
return (
<View style={styles.container}>
<StatusBar barStyle={isDarkMode ? 'light-content' : 'dark-content'} />
<Text>{message ?? 'Waiting for message...'}</Text>
<CustomButton style={{ width: 200, height: 200 }} />
<NewAppScreen templateFileName="App.tsx" />
</View>
);
}
const styles = StyleSheet.create({
container: {
flex: 1,
},
})