CODEWITHSUNDEEP
react-nativereact-navigation
KimHau
KimHau

Reputation: 340

undefined is not an object (evaluating '_this2.props.navigation.navigate')

When the header is click, I want it navigate to next page. However, I do not know how to access navigation props outside the class. Any suggestion on how to do this?

import React,{Component} from 'react'
import { View, Text, TouchableOpacity, FlatList} from 'react-native'

class header extends Component {
  render(){
    return(
        <TouchableOpacity
          onPress={() => **this.props.navigation.navigate('PageTwo')**}
        >
          <Text>{'Go to next Page Two'}</Text>
        </TouchableOpacity>
    )
  }
}

export default class PageOne extends Component {
  static navigationOptions = {
    title: 'Page One',
  }
  constructor(props) {
    super(props);
    this.state = {
      data: // ...
    };
  }

  _renderItem = ({item}) => (
    // ...
  );

  render(){
    return(
        <FlatList
          ListHeaderComponent={header}
          data={this.state.data}
          renderItem={this._renderItem}
        />
    )
  }
}

Upvotes: 0

Views: 3018

Answers (3)

Kevin Kiwango
Kevin Kiwango

Reputation: 99

pass navigation = {navigation} yourself while using your child component.

Upvotes: 0

Ashik Abbas
Ashik Abbas

Reputation: 1157

For React Navigation First make sure you installed react-navigation lib in your project. If not then run "npm install --save react-navigation" in cmd. Then create an App.js file to hold all router names like

App.js : 

import React from 'react';
import {
  View,
  Text,
  StyleSheet,
} from 'react-native';
import {StackNavigator} from 'react-navigation';

import Splash from './src/components/Splash/Splash'
import Login from './src/components/Splash/Login'

const Navigation = StackNavigator({
  Splash : {
    screen : Splash
  },
  Login : {
    screen : Login
  },
})
export default Navigation;

In my case src is dirtecory for store all js file.

Now set AppRegistry.registerComponent in index.android.js.

index.android.js

import React, { Component } from 'react';
import {
  AppRegistry,
  Text,
  View
} from 'react-native';
import {StackNavigator} from 'react-navigation';
import Splash from './src/components/Splash/Splash'
import Navigation from './App'
export class FirstReactDemo extends Component {
  render() {
    return (
      <Splash/>
    );
  }
}
AppRegistry.registerComponent('FirstReactDemo', () => Navigation);

Now, set onclick listener in first screen.

Splash.js

import React, { Component } from 'react';
import {
  View,
  Text,
  Button,
  StyleSheet,
} from 'react-native';
import {StackNavigator} from 'react-navigation';

export default class SplashScreen extends Component {



static navigationOptions = {
      title: 'Splash',
    };
  render() {
    const { navigate } = this.props.navigation;
    return (
      <View>
        <Text
          onPress={() =>navigate('Login')}
          style={styles.text}>My Splash screen</Text>
      </View>
    );
  }
}

Create Login.js file for next screen.

Upvotes: 2

Juwan Wheatley
Juwan Wheatley

Reputation: 525

React Navigation I assume?

use the withNavigation HOC (https://github.com/react-community/react-navigation/blob/aead8ff9fbd2aceb2d06c8049c8ad0d55d77b5ab/docs/api/withNavigation.md)

Upvotes: 1

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