【发布时间】:2017-07-07 10:41:47
【问题描述】:
这里是示例代码,我正在尝试 react-native-navigation
我使用 react-native init navigate 来启动项目 然后我安装了
纱线添加 react-native-navigation@latest
代码在第一个屏幕上运行完美,但是当我调用 showNextScreen 函数时它会抛出错误
undefined is not an object (evaluate 'this.props.navigator.push') react native
import React, { Component } from 'react';
import {
AppRegistry,
StyleSheet,
Text,
View
} from 'react-native';
import {Navigation} from 'react-native-navigation';
import firstPage from './app/components/firstPage';
export default class navigate extends Component {
//function to move to next screen
showNextScreen = () =>{
this.props.navigator.push({
screen: 'firstPage',
title: 'firstScreen'
})
}
render() {
return (
<View style={styles.container}>
<Text style={styles.welcome}>
Welcome to React Native!
</Text>
<Text style={styles.instructions}>
To get started, edit index.android.js
</Text>
<Text onPress={this.showNextScreen.bind(this)}
style={styles.instructions}>
Double tap R on your keyboard to reload,{'\n'}
Shake or press menu button for dev menu
</Text>
</View>
);
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
justifyContent: 'center',
alignItems: 'center',
backgroundColor: '#F5FCFF',
},
welcome: {
fontSize: 20,
textAlign: 'center',
margin: 10,
},
instructions: {
textAlign: 'center',
color: '#333333',
marginBottom: 5,
},
});
AppRegistry.registerComponent('navigate', () => navigate);
【问题讨论】:
标签: javascript android react-native