我在我的react-native应用程序中创建屏幕之间的导航,但是我有一个问题,我有一个父视图,并且在它内部呈现子视图时,每当我尝试将导航作为子视图的道具传递它给我一个错误,任何人都可以告诉我,我应该如何通过它?这是我试图做的:
App.js:
import React, { Component } from 'react';
import Parent from './components/Parent';
import {
createStackNavigator,
} from 'react-navigation';
const App = createStackNavigator({
Parent: { screen: Parent },
});
父组件:
import React, { Component } from 'react';
import { Text } from 'react-native';
import Child from './Child';
class Parent extends Component {
render() {
return (
<Text>Parent Component</Text>
<Child />
);
export default Parent;
子组件:
import React, { Component } from 'react';
import { TouchableOpacity } from 'react-native';
class Child extends Component {
render() {
const { navigate } = this.props.navigation;
return(
<TouchableOpacity onPress={() => {props.navigation.navigate('Parent')}}>
);
export default Child;
这是错误:
undefined不是评估_this.props.navigation的对象
您需要将导航道具明确地传递给<Child/>
组件
<Child navigation={this.props.navigation}/>
const { navigate } = this.props.navigation;
return(
<TouchableOpacity onPress={() => {navigate('Parent')}} />
);
并在父中将您的JSX包装在<View/>
中
<View>
<Text>Parent Component</Text>
<Child navigation={this.props.navigation}/>
</View>