Im doing this inside the react native platform using expo.
I want to display the list of items ( ListItems.js) All_Employees_screen.js . These items are being rendered via a functional component, I want to have a onRowPress() handler to so that upon clicking it i can navigate it to another view, but I dont know how to do it on react-navigation ?
Or since the new functional component can be a class component( this would be better ) how can i access the navigation thing inside it ?
AllProperties.js
import _ from 'lodash';
import React, {
Component
} from 'react';
import {
Button,
ListView,
ScrollView
} from 'react-native';
import ListItem from './ListItem';
import { connect } from 'react-redux';
import { propertiesFetch } from '../../actions';
// import { FormLabel, FormInput } from 'react-native-elements'
class AllPropertiesScreen extends React.Component {
componentWillMount(){
this.props.propertiesFetch();
this.createDataSource(this.props);
}
// we do this componentWillMount & componentWillReceiveProps (nextProps) thing twice, coz once the component is
// loaded it loads all teh values but when user hits another view like Create property, The Property data still exists
// in the global state object,
// we could move all the dc dataSource code into componentWillReceiveProps but its actually gonna benefit us
// if we make sure that we try to build our data source both when the component first loads up
// & when second time after we go back and forth other compoennts.
componentWillReceiveProps(nextProps){
// nextProps are the next set of props that this component will be rendered with
// this.props is still the old set of props
this.createDataSource(nextProps);
}
createDataSource({ properties }){
const ds = new ListView.DataSource({
rowHasChanged: (r1, r2) => r1 !== r2
});
this.dataSource = ds.cloneWithRows(properties);
}
static navigationOptions = ({ navigation }) => {
const {state, setParams} = navigation;
return {
title: 'All Emplooyee',
headerRight: (
<Button
title='Add'
// onPress={() => setParams({ mode: isInfo ? 'none' : 'info'})}
onPress={() => navigation.navigate('createProperty')
}
/>
),
};
};
goBack(){
console.log('65 - go Back clicked');
}
renderRow(property){
// console.log('67-AllPropertiesScreen =', property);
return <ListItem property={property}
onPress={() => { console.log('65 - go Back clicked') }}
/>;
}
render() {
console.log('72-AllPropertiesScreen this.props', this.props );
return(
<ListView
enableEmptySections
dataSource={this.dataSource}
renderRow={this.renderRow}
/>
);
}
}
const mapStateToProps = state => {
console.log('83 - AllPropertiesScreen state. properties', state );
const properties = _.map(state.properties, (val, uid ) => {
return { ...val, uid }; // { shift: 'Monday'}
});
return { properties };
};
export default connect(mapStateToProps, {propertiesFetch}) (AllPropertiesScreen);
ListItem.js
import React, { Component } from 'react';
import { Text, TouchableWithoutFeedback, View } from 'react-native';
class ListItem extends Component {
// onRowPress(){
// Actions.employeeEdit({ employee: this.props.employee });
// }
render(){
const { agent_name, cell, address } = this.props.property;
console.log('14- ListItem ', this.props);
return (
<View>
<CardSection>
<Text style={styles.titleStyle}>
name
</Text>
<Text style={styles.titleStyle}>
cell
</Text>
<Text style={styles.titleStyle}>
address
</Text>
</CardSection>
</View>
);
}
}
const styles = {
titleStyle: {
fontSize: 18,
paddingLeft: 15
}
}
export default ListItem;
//
main.js ( this is where I have all the navigation paths hookedup.
class App extends React.Component {
render() {
const MainNavigator = TabNavigator({
// auth: { screen : AuthScreen },
// review: { screen: ReviewScreen },
// signup: { screen : SignupScreen },
followup: { screen: FollowupScreen }, welcome: { screen : WelcomeScreen },
auth: { screen : AuthScreen },
signup: { screen : SignupScreen },
main: {
screen: TabNavigator ({
followup: { screen: FollowupScreen },
map: { screen: MapScreen },
deck: { screen: DeckScreen },
settings : {
screen: StackNavigator ({
settings: { screen: SettingsScreen },
// settings: { screen: SettingsScreen },
UserProfile: { screen: UserProfileScreen },
HelpSupport: { screen: HelpSupportScreen },
Notifications: { screen: NotificationsScreen },
Signout: { screen: SignoutScreen } // not working, Navigation object not accessible inside the component
}) //screen: StackNavigator ({
},
followup : {
screen: StackNavigator ({
followup: { screen: FollowupScreen },
allProperties: { screen: AllPropertiesScreen },
createProperty: { screen: PropertyCreateScreen },
Red: { screen: RedPriorityScreen }, // not working, Navigation object not accessible inside the component
GreyPriority: { screen: GreyPriorityScreen },
}) //screen: StackNavigator ({
},
draw: {
screen: DrawerNavigator ({
drawin: { screen: DrawScreen },
}) //screen: StackNavigator ({
}
}) //screen: TabNavigator
}
}, {
navigationOptions: {
tabBarVisible: false
},
lazy: true
});
return (
<Provider store={store}>
<View style={styles.container}>
<MainNavigator />
</View>
</Provider>
);
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
backgroundColor: '#fff',
// alignItems: 'center',
justifyContent: 'center',
},
});
Expo.registerRootComponent(App);
Solution suggested by @Matt but as soon as I put the navigation={this.props.navigation} it complains. undefined is not an object ( evaluating this.props.navigation )
renderRow(property){
return (
<ListItem
property={property}
navigation={this.props.navigation}
onPress={() => {
console.log( '70-on Press inside renderRow ');
}}/>
);
}
If the component is not a screen you have to import the navigation.
Try this:
import React from 'react';
import { Button } 'react-native';
import { withNavigation } from 'react-navigation';
class MyBackButton extends React.Component {
render() {
return <Button title="Back" onPress={() => { this.props.navigation.goBack() }} />;
}
}
// withNavigation returns a component that wraps MyBackButton and passes in the
// navigation prop
export default withNavigation(MyBackButton);
For more info check out https://reactnavigation.org/docs/connecting-navigation-prop.html
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