I'm new to react-native. I use react-native-side-menu to create a drawer and I add a bottom on the left side to skip to another page. when I push the bottom, the error code appeared. However, if I put the bottom in the homepage, it works. Why if I put it in the drawer it will crash?
The error message is undefined is not an object (evaluating '_this.props.navigation.navigate')
This is route stack App.js
import React from 'react';
import { StyleSheet, Text, View } from 'react-native';
import { createStackNavigator, createAppContainer } from 'react-navigation';
import HomeScene from './homeScene';
import LoginScene from './loginScene';
import RegisterScene from './registerScene';
import TimetableScene from './timetable';
import ChatScene from './ChatScene';
import LeftMenu from './LeftMenu';
const SimpleApp = createStackNavigator({
Login: {
screen: LoginScene,
navigationOptions: {
headerTitle: 'Login',
}
},
Home: {
screen: HomeScene,
navigationOptions: {
header: null,
}
},
Register: {
screen: RegisterScene,
navigationOptions: {
headerTitle: 'Register',
}
},
Timetable: {
screen: TimetableScene,
navigationOptions:{
headerTitle: 'Timetable',
}
},
//The page I want to skip
Chat: {
screen: ChatScene,
navigationOptions:{
headerTitle: 'Chat',
}
}
LeftMenu:{
screen: LeftMenu
}
});
const AppContainer = createAppContainer(SimpleApp);
export default class App extends React.Component {
render() {
return <AppContainer />;
}
}
LeftScene.js
import React, { Component } from 'react';
import {
AppRegistry,
StyleSheet,
Text,
View,
TouchableOpacity,
SectionList
} from 'react-native';
export default class LeftMenu extends Component {
constructor(props) {
super(props);
this.selectSideMenu = this.selectSideMenu.bind(this);
}
selectSideMenu() {
this.props.onSelectMenuItem();
}
Chat = () => {
const { navigate } = this.props.navigation;
navigate('Chat');
}
render() {
return (
<View style={styles.container}>
//The bottom to skip to "Chat" page but will respond error
<TouchableOpacity
onPress={this.Chat}
style={styles.button}>
<Text
style={styles.btText}>Chat</Text>
</TouchableOpacity>
</View>
);
}
}
I think maybe the wrong code from the following code in LeftScene.js
Chat = () => {
const { navigate } = this.props.navigation;
navigate('Chat');
}
The this.props
can only get the value from the parent component. The parent component of LeftMenu is homeScene, homeScene has no navigation so it doesn't work. And because of App.js is parent component of homeScene, so if I put the skip bottom in homeScene it can work. But I don't know how to figure out it...
homeScene.js
import React, { Component } from 'react';
import {
AppRegistry,
StyleSheet,
Text,
TextInput,
View,
TouchableOpacity,
Dimensions
} from 'react-native';
let { width, height } = Dimensions.get('window');
import SideMenu from 'react-native-side-menu'
import Menu from './LeftMenu'
export default class LeftSideMenu extends Component {
constructor(props) {
super(props);
this.state = {
isOpen: false,
}
this.SelectMenuItemCallBack = this.SelectMenuItemCallBack.bind(this);
}
SelectMenuItemCallBack() {
this.setState({
isOpen: !this.state.isOpen,
})
}
SelectToOpenLeftSideMenu() {
this.setState({
isOpen: true,
})
}
Chat = () => {
const { navigate } = this.props.navigation;
navigate('Chat');
}
render() {
const menu = <Menu onSelectMenuItem={this.SelectMenuItemCallBack} />;
return (
<SideMenu
menu={menu}
isOpen={this.state.isOpen}
onChange={(isOpen) => {
this.setState({
isOpen: isOpen,
})
}}
menuPosition={'left'}
openMenuOffset={0.75 * width}
edgeHitWidth={200}
>
<View
style={styles.top}>
//The bottom to open the drawer
<TouchableOpacity
onPress={() => this.SelectToOpenLeftSideMenu()}
style={styles.Fbutton} >
<Text
style={styles.btText}>F</Text>
</TouchableOpacity>
</View>
//The bottom to skip to "Chat" page and works
<View style={styles.container}>
<TouchableOpacity
onPress={this.Chat}
style={styles.button}>
<Text
style={styles.btText}>Chat</Text>
</TouchableOpacity>
</View>
</SideMenu>
);
}
}
I expect the bottom to skip to the "Chat" page on the homeScene can be put in the drawer
I can see your homeScene.js
has imported LeftMenu
, thus navigation
props will not pass into LeftMenu
from react-navigation
. Try to pass the navigation
to LeftMenu
as props in the homeScene.js
const menu = <Menu onSelectMenuItem={this.SelectMenuItemCallBack} navigation={this.props.navigation} />;
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