在制作反应原生应用程序的过程中,我正在 React Native 中尝试函数式编程,出于某种原因,当我将预构建的代码转换为箭头函数时, HOT RELOADING 会做出响应,但不会推动更改,请提供帮助。
这是预先构建的代码w / class
import React, { Component } from 'react';
import {
AppRegistry,
StyleSheet,
Text,
View
} from 'react-native';
import Component1 from './app/components/msg/propsMsg'
export default class tutorial extends Component {
render() {
return (
<View style={styles.container}>
<Text style={styles.welcome}>
Welcome a React Native Sandbox!
</Text>
<Component1 msg="props MSG"/>
<Text style={styles.instructions}>
Press Cmd+R to reload,{'\n'}
Cmd+D or shake for dev menu
</Text>
</View>
);
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
justifyContent: 'center',
alignItems: 'center',
backgroundColor: '#fefefe',
},
welcome: {
fontSize: 20,
textAlign: 'center',
margin: 10,
},
instructions: {
textAlign: 'center',
color: '#333333',
marginBottom: 5,
},
});
AppRegistry.registerComponent('tutorial', () => tutorial);
这是我尝试将其变为功能
const tutorial = () => {
return (
<View style={styles.container}>
<Text style={styles.welcome}>
Welcome a React Native Sandbox!
</Text>
<Component1 msg="props MSG 2"/>
<Text style={styles.instructions}>
Press Cmd+R to reload,{'\n'}
Cmd+D or shake for dev menu
</Text>
</View>
)
}
export default tutorial