I'm having an issue about reading my state from another component. I use Redux Toolkit to store my state.
colorPick.js :
import { createSlice } from '#reduxjs/toolkit'
export const colorizerSlice = createSlice({
name: 'colorizer',
initialState: {
color: { nav: '#cecece',
bg: '#ebebeb' }
},
reducers: {
yellow: state => {
state.color = { nav: '#e1ce00',
bg: '#ffed27' }
},
red: state => {
state.color = { nav: '#e11300',
bg: '#ff3d27' }
},
green: state => {
state.color = { nav: '#00e104',
bg: '#4bff27' }
},
pink: state => {
state.color = { nav: '#e100ce',
bg: '#ff27fb' }
},
orange: state => {
state.color = { nav: '#e18b00',
bg: '#ff8527' }
},
// incrementByAmount: (state, action) => {
// state.value += action.payload
// }
}
})
// Action creators are generated for each case reducer function
export const { yellow,
red,
green,
pink,
orange, } = colorizerSlice.actions
export default colorizerSlice.reducer
store.js :
import { configureStore } from '#reduxjs/toolkit'
import colorizerReducer from './reducers/colorPick'
export default configureStore({
reducer: {
colorizer: colorizerReducer,
}
})
App.js :
import { StatusBar } from 'expo-status-bar';
import { useState, useEffect } from 'react';
import { Button, StyleSheet, Text, TextInput, View } from 'react-native';
import { NavigationContainer } from '#react-navigation/native';
import { createNativeStackNavigator } from '#react-navigation/native-stack';
import { Provider } from 'react-redux';
import Notes from './screens/Notes';
import ViewNote from './screens/ViewNote';
import EditNote from './screens/EditNote';
import AddNote from './screens/AddNote';
import store from './redux/store';
export default function App() {
const Stack = createNativeStackNavigator();
return (
<Provider store={store}>
<NavigationContainer>
<Stack.Navigator screenOptions={defaultOptions}>
<Stack.Screen name='Notes' component={Notes} options={notesOptions} />
<Stack.Screen name='ViewNote' component={ViewNote} options={viewNotesOptions} />
<Stack.Screen name='EditNote' component={EditNote} options={editNotesOptions} />
<Stack.Screen name='AddNote' component={AddNote} options={addNotesOptions} />
</Stack.Navigator>
</NavigationContainer>
</Provider>
);
}
ColorPalette.js : (I can read my state in this component)
import { StyleSheet, Text, View, Pressable } from 'react-native'
import React from 'react'
import { useDispatch, useSelector } from 'react-redux'
import { green, red, yellow, orange, pink } from '../redux/reducers/colorPick'
const ColorPalette = () => {
const { color } = useSelector((state) => state.colorizer);
const dispatch = useDispatch();
console.log(color.nav);
return (
<View style={styles.paletteContainer}>
<Pressable style={[styles.color, {backgroundColor: '#ffed27'}]} android_ripple={{color: '#d9d9d9'}} onPress={() => dispatch(yellow())} />
<Pressable style={[styles.color, {backgroundColor: '#ff3d27'}]} android_ripple={{color: '#d9d9d9'}} onPress={() => dispatch(red())} />
<Pressable style={[styles.color, {backgroundColor: '#4bff27'}]} android_ripple={{color: '#d9d9d9'}} onPress={() => dispatch(green())} />
<Pressable style={[styles.color, {backgroundColor: '#ff27fb'}]} android_ripple={{color: '#d9d9d9'}} onPress={() => dispatch(pink())} />
<Pressable style={[styles.color, {backgroundColor: '#ff8527'}]} android_ripple={{color: '#d9d9d9'}} onPress={() => dispatch(orange())} />
<View style={{backgroundColor: color.nav, width:20}}></View>
<View style={{backgroundColor: color.bg, width:20}}></View>
</View>
)
}
NoteTile.js : (I cannot read in this component)
import { StyleSheet, Text, View, Pressable } from 'react-native'
import React from 'react'
import { useSelector } from 'react-redux'
const NoteTile = ({title, det, pressFunc}) => {
const { color } = useSelector((state) => state.colorizer);
// const color = useSelector((state) => state.colorizer.color);
return (
<View style={styles.tileContainer} >
<Pressable android_ripple={{color: '#cccccc'}}
style={styles.button}
onPress={pressFunc} >
<View style={[styles.innerContainer]} >
<Text style={styles.title} >{title}</Text>
<Text style={styles.details} >{det}</Text>
</View>
</Pressable>
</View>
)
}
export default NoteTile
const styles = StyleSheet.create({
tileContainer: {
flex: 1,
margin: 10,
height: 100,
maxHeight: 400,
borderRadius: 30,
elevation: 5,
overflow: 'hidden',
// backgroundColor: '#ffffff'
backgroundColor: color.bg,
}})
The error that I got is 'Can't find variable: color'
I wrapped my code with Provider.
And I use NoteTile.js in Notes Screen which is within the Provider.
try using it this way
<View style={[styles.tileContainer,{ backgroundColor:color.bg }]} >
Related
Hello I have 3 drawer Navigators[Home,List,Contact] and I want to navigate from List Screen to an other Screen called EditScreen this Why I create a Stack Navigator on the List Screen But I got an error when I press the name on the table thet should take me to From the List Screen to The Edit Screen.
App.js
import * as React from 'react';
import { NavigationContainer } from '#react-navigation/native';
import { createNativeStackNavigator } from '#react-navigation/native-stack';
import { createDrawerNavigator } from '#react-navigation/drawer';
import COLORS from './src/conts/colors';
import HomeScreen from './Screens/HomeScreen';
import ListScreen from './Screens/ListScreen';
import FormScreen from './Screens/FormScreen';
import EditScreen from './Screens/EditScreen';
const Stack = createNativeStackNavigator();
const Drawer = createDrawerNavigator();
const App = () => {
return (
<NavigationContainer>
<Drawer.Navigator initialRouteName="Home" screenOptions={{
headerStyle: {
backgroundColor: COLORS.lightkBlue
},
headerTintColor: '#fff',
headerTitleStyle: {
fontWeight: 'bold'
}
}}>
<Drawer.Screen name="Home" component={HomeScreen} />
<Drawer.Screen name="List" component={ListScreen} />
<Drawer.Screen name="Form" component={FormScreen} />
</Drawer.Navigator>
</NavigationContainer>
);
}
export default App;
ListScreen.js
import React, { useState } from 'react';
import { StyleSheet, SafeAreaView, ScrollView,Text, View, Modal } from 'react-native';
import { DataTable } from 'react-native-paper';
import { NavigationContainer } from '#react-navigation/native';
import { createNativeStackNavigator } from '#react-navigation/native-stack';
import COLORS from '../src/conts/colors';
import Button from '../src/views/components/Button';
import EditScreen from './EditScreen';
const Stack = createNativeStackNavigator();
function Edit() {
return (
<Stack.Navigator>
<Stack.Screen name="Edit" component={EditScreen} />
</Stack.Navigator>
);
}
const List = ({navigation}) => {
const data = [
{id:1,name:"Hassane1",phone:"068888188888",email:"contact#gemail.com"},
{id:2,name:"Hassane2",phone:"068888888288",email:"contact#gemail.com"},
{id:3,name:"Hassane3",phone:"068888388888",email:"contact#gemail.com"},
]
const renderList = data.map((item)=>{
return(
<DataTable.Row key={item.id}>
<DataTable.Cell onPress={() => navigation.navigate("Edit",{item})} >{item.name}</DataTable.Cell>
<DataTable.Cell>{item.email}</DataTable.Cell>
<DataTable.Cell>{item.phone}</DataTable.Cell>
</DataTable.Row>
)
})
return (
<SafeAreaView style={{backgroundColor: COLORS.white, flex: 1}}>
<ScrollView
contentContainerStyle={{paddingTop: 50, paddingHorizontal: 20}}>
<Text style={{color: COLORS.black, fontSize: 40, fontWeight: 'bold'}}>
List of Companies
</Text>
<Text style={{color: COLORS.grey, fontSize: 18, marginVertical: 10}}>
Check Our Companies Details
</Text>
<DataTable style={styles.container} >
<DataTable.Header style={styles.tableHeader} >
<DataTable.Title>Name</DataTable.Title>
<DataTable.Title>email</DataTable.Title>
<DataTable.Title>Phone</DataTable.Title>
</DataTable.Header>
</DataTable>
{renderList}
</ScrollView>
</SafeAreaView>
);
};
export default List;
const styles = StyleSheet.create({
container: {
padding: 15,
},
tableHeader: {
backgroundColor: '#F3F4FB',
},
modalButtonView: {
}
});
EditScreen.js
import React, { useState } from 'react';
import {
View,
Text,
TextInput,
SafeAreaView,
Keyboard,
ScrollView,
Alert,
} from 'react-native';
import COLORS from '../src/conts/colors';
import Button from '../src/views/components/Button';
import Input from '../src/views/components/Input';
import Loader from '../src/views/components/Loader';
const EditScreen = (props) => {
const {id,name,phone,email} = props.route.params.item
const [inputs, setInputs] = React.useState({
name: '',
email: '',
phone: '',
});
const [errors, setErrors] = React.useState({});
const [loading, setLoading] = React.useState(false);
const validate = () => {
Keyboard.dismiss();
let isValid = true;
if (!inputs.name) {
handleError('Please input Company', 'name');
isValid = false;
}
if (!inputs.email) {
handleError('Please input email', 'email');
isValid = false;
} else if (!inputs.email.match(/\S+#\S+\.\S+/)) {
handleError('Please input a valid email', 'email');
isValid = false;
}
if (!inputs.phone) {
handleError('Please input phone number', 'phone');
isValid = false;
}
{/*if (isValid) {
register();
}*/}
};
const handleOnchange = (text, input) => {
setInputs(prevState => ({...prevState, [input]: text}));
};
const handleError = (error, input) => {
setErrors(prevState => ({...prevState, [input]: error}));
};
return (
<SafeAreaView style={{backgroundColor: COLORS.white, flex: 1}}>
<Loader visible={loading} />
<ScrollView
contentContainerStyle={{paddingTop: 50, paddingHorizontal: 20}}>
<Text style={{color: COLORS.black, fontSize: 40, fontWeight: 'bold'}}>
Edit
</Text>
<Text style={{color: COLORS.grey, fontSize: 18, marginVertical: 10}}>
Now You Can Edit !
</Text>
<View style={{marginVertical: 20}}>
<Input
onChangeText={text => handleOnchange(text, 'name')}
onFocus={() => handleError(null, 'name')}
iconName="account-outline"
label="Company"
placeholder="Enter your Company Name"
error={errors.name}
defaultValue={name}
/>
<Input
onChangeText={text => handleOnchange(text, 'email')}
onFocus={() => handleError(null, 'email')}
iconName="email-outline"
label="Email"
placeholder="Enter your email address"
error={errors.email}
defaultValue={email}
/>
<Input
keyboardType="numeric"
onChangeText={text => handleOnchange(text, 'phone')}
onFocus={() => handleError(null, 'phone')}
iconName="phone-outline"
label="Phone Number"
placeholder="Enter your phone no"
error={errors.phone}
defaultValue={phone}
/>
<Button title="Save" onPress={validate} />
<Button title="Cancel" onPress={() => props.navigation.navigate("List")} />
</View>
</ScrollView>
</SafeAreaView>
);
};
export default EditScreen;
This is The Error
enter image description here
Your 'Edit' navigator is declared in your Edit() function but the function is never called.
react-navigation does know how to navigate to it since it is never initiated
You should try to call the function at least once at component start so the navigator is initiated
You do not have EditScreen as a screen on the drawers navigation screens in App.js
Try to add:
<Drawer.Screen name="Edit" component={EditScreen} />
On App.js
I'm using redux toolkit to manage state and am finding that the components are not updating when changes are made to the state.
I do see though, that when I listen to changes in my redux state within a useEffect that it will trigger the callback, meaning it is aware that the redux state has changed but the component is not rerendering.
Reading other questions it seems like a lot of the issues were about mutating the state, but I do know that using redux tool kit allows you to write "mutable" code and this is handled by Immer. Not sure if this is an issue that applies here...
My Slice:
const initialState = {
watchlists: []
}
export const watchlistsSlice = createSlice({
name: 'watchlists',
initialState,
reducers: {
updateWatchlists: (state, { payload }) => {
state.watchlists = payload;
},
},
})
export const { updateWatchlists } = watchlistsSlice.actions;
export default watchlistsSlice.reducer;
This is the component that calls the function that changes the state:
import React from 'react';
import { StyleSheet, View, Image } from 'react-native';
import { useSelector, useDispatch } from 'react-redux';
import Text from '../core/Text';
import Pressable from '../core/Pressable';
import { AddIcon } from '../core/Icons';
import { formatPrice, formatPercent } from '../../utils/formatNumber';
import { shortenLongText } from '../../utils/formatText';
import { updateWatchlists } from '../../redux/watchlistsSlice';
import { addToWatchlist } from '../../storage/watchlists';
export default function ListItem({data, theme, navigation, watchlistID }) {
const dispatch = useDispatch();
const { currency } = useSelector(state => state.userPreference)
const addCryptoToWatchlist = async () => {
if (watchlistID) {
addToWatchlist(watchlistID, {
slug: data.slug,
})
.then(result => dispatch(updateWatchlists(result)))
.catch(err => console.log(err))
} else {
console.log('not ready yet')
}
}
return (
<Pressable
onPress={() => navigation.navigate('CoinDetails', {
data,
})}
>
<View style={styles.searchResult}>
<View style={styles.nameContainer}>
<Image style={styles.image} source={{uri: data.logo}} />
<View style={{marginLeft: 15}}>
<Text type={"big"} size={18} theme={theme.text}>{data.symbol}</Text>
<Text type={"regular"} size={14} theme={theme.text} style={{paddingTop: 1}}>{shortenLongText(data.name,25)}</Text>
</View>
</View>
<View style={styles.rightContainer}>
<View style={styles.priceContainer}>
<Text type={"big"} theme={theme.text}>{formatPrice(data.price, currency)}</Text>
<Text type={"big"} theme={data.direction === 'up' ? theme.percent.up : theme.percent.down}>{formatPercent(data.percent_change_24h)}</Text>
</View>
<Pressable onPress={() => addCryptoToWatchlist()}>
<AddIcon
size={30}
/>
</Pressable>
</View>
</View>
</Pressable>
)
}
const styles = StyleSheet.create({
searchResult: {
flexDirection: 'row',
justifyContent: 'space-between',
alignItems: 'center',
marginBottom: 30,
},
nameContainer : {
flexDirection: 'row',
alignItems: 'center',
},
rightContainer: {
flexDirection: 'row',
alignItems: 'center',
},
priceContainer: {
alignItems: 'flex-end',
marginRight: 20
},
image: {
width: 28,
height: 28,
}
})
This is one the components that I expect to rerender when the state changes:
The useEffect does get trigged so the component is recognizing a change in state, but the component does not rerender.
I dont know if this is insightful, but the data in the state is an array of objects and in this case a single property one of the objects is getting changed.
import React, { useState, useEffect } from 'react';
import { View, StyleSheet } from 'react-native';
import { useSelector } from 'react-redux';
import GetStarted from './GetStarted';
import AddCryptoCard from './AddCryptoCard';
import CardList from './CardList';
import Text from '../core/Text';
export default function WatchlistCardsSection({ setModalVisible, navigation }) {
const { theme } = useSelector(state => state.userPreference);
const { watchlists } = useSelector(state => state.watchlists)
const { cryptoData } = useSelector(state => state.cryptoData);
const [ watchlistCryptoDataLoaded, setWatchlistCryptoDataLoaded ] = useState(false);
const checkIfWatchlistDataLoaded = () => {
const watchlistNames = watchlists.map(watchlist => watchlist.name);
const checkIfLoaded = cryptoData.map(data => watchlistNames.some(name => data.tags.includes(name))).includes(true);
setWatchlistCryptoDataLoaded(checkIfLoaded);
}
useEffect(() => {
checkIfWatchlistDataLoaded();
},[cryptoData])
useEffect(() => console.log("watchlist updated"), [watchlists])
return (
watchlists &&
watchlists.length === 0 ?
<GetStarted
setModalVisible={setModalVisible}
/>
:
watchlists.filter(item => item.viewOnHome).map(watchlist => (
watchlist.data.length === 0 ?
<AddCryptoCard
key={watchlist.id}
id={watchlist.id}
name={watchlist.name}
navigation={navigation}
/>
:
watchlistCryptoDataLoaded ?
<View
key={watchlist.id}
style={styles.sectionContainer}
>
<Text style={{paddingLeft: 20}} type={'big'} size={24} theme={theme.text}>{watchlist.name}</Text>
<CardList
name={watchlist.name}
config={{type: 'price'}}
navigation={navigation}
/>
</View>
: null
))
)
}
const styles = StyleSheet.create({
sectionContainer: {
flex: 1,
marginTop: 25,
}
})
I am getting a reference Error message: can't find variable:error, i'm not able to figure out where I have written this variable in code. Someone help!!
This is my App.js (Starting point)
import React from 'react';
import Main from './components/MainComponent';
import { Provider } from 'react-redux';
import { ConfigureStore } from './redux/configureStore';
const store = ConfigureStore();
export default class App extends React.Component {
render() {
return (
<Provider store={store}>
<Main />
</Provider>
);
}
}
ActionTypes.js (This file represents different Actions which can be dispatched)
export const DISHES_LOADING = 'DISHES_LOADING';
export const ADD_DISHES = 'ADD_DISHES';
export const DISHES_FAILED = 'DISHES_FAILED';
export const ADD_COMMENTS = 'ADD_COMMENTS';
export const COMMENTS_FAILED = 'COMMENTS_FAILED';
export const PROMOS_LOADING = 'PROMOS_LOADING';
export const ADD_PROMOS = 'ADD_PROMOS';
export const PROMOS_FAILED = 'PROMOS_FAILED';
export const LEADERS_LOADING = 'LEADERS_LOADING';
export const ADD_LEADERS = 'ADD_LEADERS';
export const LEADERS_FAILED = 'LEADERS_FAILED';
ActionCreators.js (This file fetches data from a fake Rest api and performs the necessary computations dispatches the data and action accordingly )
import {createStore, combineReducers, applyMiddleware} from 'redux';
import thunk from 'redux-thunk';
import logger from 'redux-logger';
import { dishes } from './dishes';
import { comments } from './comments';
import { promotions } from './promotions';
import { leaders } from './leaders';
export const ConfigureStore = () => {
const store = createStore(
combineReducers({
dishes,
comments,
promotions,
leaders
}),
applyMiddleware(thunk, logger)
);
return store;
}
AboutComponent.js (This is one of my component)
import React, {Component} from 'react';
import { Text, ScrollView } from 'react-native';
import { Card } from 'react-native-elements';
import { FlatList } from 'react-native';
import { ListItem } from 'react-native-elements';
import { connect } from 'react-redux';
import { baseUrl } from '../shared/baseUrl';
import { Loading } from './LoadingComponent';
const mapStateToProps = state => {
return {
leaders: state.leaders
}
}
function History() {
return(
<Card title="Our History">
<Text style={{margin: 10}}>
Started in 2010, Ristorante con Fusion quickly established itself as a culinary icon par excellence in Hong Kong. With its unique brand of world fusion cuisine that can be found nowhere else, it enjoys patronage from the A-list clientele in Hong Kong. Featuring four of the best three-star Michelin chefs in the world, you never know what will arrive on your plate the next time you visit us.{"\n\n"}
The restaurant traces its humble beginnings to The Frying Pan, a successful chain started by our CEO, Mr. Peter Pan, that featured for the first time the world's best cuisines in a pan.
</Text>
</Card>
);
}
function RenderLeaders(props) {
const leaders = props.leaders;
const renderLeaderItems = ({item, index}) => {
return (
<ListItem
key={index}
title={item.name}
subtitle={item.description}
hideChevron={true}
leftAvatar={{source: {uri: baseUrl + item.image}}}
/>
);
};
return (
<Card title='Comments' >
<FlatList
data={leaders}
renderItem={renderLeaderItems}
keyExtractor={item => item.id.toString()}
/>
</Card>
);
}
class About extends Component {
static navigationOptions = {
title: 'About Us'
};
render(){
if (this.props.leaders.isLoading) {
return(
<ScrollView>
<History />
<Card
title='Corporate Leadership'>
<Loading />
</Card>
</ScrollView>
);
}
else if (this.props.leaders.errMess) {
return(
<ScrollView>
<History />
<Card
title='Corporate Leadership'>
<Text>{this.props.leaders.errMess}</Text>
</Card>
</ScrollView>
);
}
else{
return (
<ScrollView>
<History/>
<RenderLeaders leaders={this.props.leaders.leaders} />
</ScrollView>
)
}
}
}
export default connect(mapStateToProps)(About);
MainComponent.js (The file which controls the side drawer and navigation)
import React, {Component } from 'react';
import Menu from './MenuComponent';
import DishDetail from './DishdetailComponent';
import { View, Platform, Image, StyleSheet, ScrollView, Text } from 'react-native';
import {createStackNavigator} from 'react-navigation-stack';
import { createAppContainer, SafeAreaView } from 'react-navigation';
import { createDrawerNavigator, DrawerItems } from 'react-navigation-drawer';
import Home from './HomeComponent';
import Contact from './ContactComponent';
import About from './AboutComponent';
import {Icon} from 'react-native-elements';
import { connect } from 'react-redux';
import { fetchDishes, fetchComments, fetchPromos, fetchLeaders } from '../redux/ActionCreators';
const mapStateToProps = state => {
return {
}
}
const mapDispatchToProps = dispatch => ({
fetchDishes: () => dispatch(fetchDishes()),
fetchComments: () => dispatch(fetchComments()),
fetchPromos: () => dispatch(fetchPromos()),
fetchLeaders: () => dispatch(fetchLeaders()),
})
const MenuNavigator = createStackNavigator({
Menu:{screen:Menu,
navigationOptions:({navigation}) => ({
headerLeft: <Icon name='menu' size={24} color='white'
onPress={()=>navigation.toggleDrawer()}
/>
})},
DishDetail: { screen: DishDetail }
}, {
initialRouteName: 'Menu',
navigationOptions: {
headerStyle: {
backgroundColor: "#512DA8"
},
headerTintColor: '#fff',
headerTitleStyle: {
color: "#fff"
}
}
});
const HomeNavigator = createStackNavigator({
Home: { screen: Home }
}, {
navigationOptions: ({ navigation }) => ({
headerStyle: {
backgroundColor: "#512DA8"
},
headerTitleStyle: {
color: "#fff"
},
headerTintColor: "#fff",
headerLeft: <Icon name='menu' size={24} color='white'
onPress={()=>navigation.toggleDrawer()}
/>
})
});
const AboutNavigator = createStackNavigator({
Home: { screen: About }
}, {
navigationOptions: ({ navigation }) => ({
headerStyle: {
backgroundColor: "#512DA8"
},
headerTitleStyle: {
color: "#fff"
},
headerTintColor: "#fff",
headerLeft: <Icon name='menu' size={24} color='white'
onPress={()=>navigation.toggleDrawer()}
/>
})
});
const ContactNavigator = createStackNavigator({
Home: { screen: Contact }
}, {
navigationOptions: ({ navigation }) => ({
headerStyle: {
backgroundColor: "#512DA8"
},
headerTitleStyle: {
color: "#fff"
},
headerTintColor: "#fff",
headerLeft: <Icon name='menu' size={24} color='white'
onPress={()=>navigation.toggleDrawer()}
/>
})
});
const CustomDrawerContentComponent = (props) => (
<ScrollView>
<SafeAreaView style={styles.container} forceInset={{ top: 'always', horizontal: 'never' }}>
<View style={styles.drawerHeader}>
<View style={{flex:1}}>
<Image source={require('./images/logo.png')} style={styles.drawerImage} />
</View>
<View style={{flex: 2}}>
<Text style={styles.drawerHeaderText}>Ristorante Con Fusion</Text>
</View>
</View>
<DrawerItems {...props} />
</SafeAreaView>
</ScrollView>
);
const MainNavigator = createDrawerNavigator({
Home:
{ screen: HomeNavigator,
navigationOptions: {
title: 'Home',
drawerLabel: 'Home',
drawerIcon: ({tintColor}) => (
<Icon
name='home'
type='font-awesome'
size={24}
color={tintColor}
/>
)
}
},
About:
{ screen: AboutNavigator,
navigationOptions: {
title: 'About Us',
drawerLabel: 'About Us',
drawerIcon: ({tintColor}) => (
<Icon
name='info-circle'
type='font-awesome'
size={24}
color={tintColor}
/>
)
}
},
Menu:
{ screen: MenuNavigator,
navigationOptions: {
title: 'Menu',
drawerLabel: 'Menu',
drawerIcon: ({tintColor}) => (
<Icon
name='list'
type='font-awesome'
size={24}
color={tintColor}
/>
)
},
},
Contact:{
screen:ContactNavigator,
navigationOptions: {
title: 'Contact Us',
drawerLabel: 'Contact Us',
drawerIcon: ({tintColor}) => (
<Icon
name='address-card'
type='font-awesome'
size={22}
color={tintColor}
/>
)
}
}
}, {
drawerBackgroundColor: '#D1C4E9',
contentComponent: CustomDrawerContentComponent
});
const App = createAppContainer(MainNavigator);
class Main extends Component {
componentDidMount() {
this.props.fetchDishes();
this.props.fetchComments();
this.props.fetchPromos();
this.props.fetchLeaders();
}
onDishSelect(dishId) {
this.setState({selectedDish: dishId})
}
render() {
return (
<View style={{flex:1, paddingTop: Platform.OS === 'ios' ? 0 : Expo.Constants.statusBarHeight }}>
<App />
</View>
);
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
},
drawerHeader: {
backgroundColor: '#512DA8',
height: 140,
alignItems: 'center',
justifyContent: 'center',
flex: 1,
flexDirection: 'row'
},
drawerHeaderText: {
color: 'white',
fontSize: 24,
fontWeight: 'bold'
},
drawerImage: {
margin: 10,
width: 80,
height: 60
}
});
export default connect(mapStateToProps, mapDispatchToProps)(Main);
react-navigation, navigation.navigate is not working in my component and does not show any error.
here is my navigator shopNavigation component:
import {createStackNavigator} from 'react-navigation-stack';
import {createAppContainer} from 'react-navigation';
import {Platform} from 'react-native';
import ProducOverviewScreen from '../screens/shop/ProductOverviewScreen';
import ProductDetailScreen from '../screens/shop/ProductDetailScreen';
import Colors from '../constants/Colors';
const ProductNavigator = createStackNavigator(
{
ProductOverview: ProducOverviewScreen,
ProductDetail: ProductDetailScreen
},
{
defaultNavigationOptions: {
headerStyle: {
backgroundColor: Platform.OS === 'android' ? Colors.primary: '',
},
headerTinColor: Platform.OS === 'android' ? 'white' : Colors.primary,
},
},
);
export default createAppContainer(ProductNavigator);
and this is the component i want to do the navigate function
ProductOverview
import React from 'react';
import {FlatList, Text} from 'react-native';
import {useSelector} from 'react-redux';
import ProductItem from '../../components/shop/ProductItem';
import { withNavigation, navigate } from 'react-navigation';
const ProductOverviewScreen = (props) => {
const products = useSelector(state => state.products.availableProducts);
return (
<FlatList
data={products}
keyExtractor={item => item.id}
renderItem={itemData => (
<ProductItem
image={itemData.item.imageUrl}
title={itemData.item.title}
price={itemData.item.price}
onViewDetail={()=> {
props.navigation.navigate('ProductDetail')
}}
onAddToCart={() => {}}
/>
)}
/>
);
};
ProductOverviewScreen.navigationOptions = {
title: 'All Products',
color: 'white',
headerTitleStyle: {
color: 'white',
},
};
export default ProductOverviewScreen;
the doc of react-navigation is not telling me much.
Thanks in advance
I'm trying to change value of state inside navigationOptions.
my navigation options
static navigationOptions = ({ navigation }) => {
const { params = {} } = navigation.state;
// alert(params.searchText);
return {
headerLeft: (params.searchText) ? <View
style={{
flexDirection:
'row', justifyContent: 'center'
}}>
<TouchableOpacity
onPress={()=> {
// navigation.navigate('home');
alert('Coming soon ');
}}>
<Image style={{ marginLeft: 20, height: 20, width: 20, resizeMode: "contain" }}
source={require('../assets/header_icons/three_logo.png')}
/>
</TouchableOpacity>
</View> :
<View style={{
flexDirection:
'row', justifyContent:
'center'
}}>
<TouchableOpacity
onPress={()=> {
this.setState({
loadUrl: "card.html#!/customer-dashboard?userType=Authenticated",
showWeb:true,
});
}}>
<Image style={{ marginLeft: 20, height: 20, width: 20, resizeMode: "contain" }}
source={require('../assets/header_icons/icon_arrow_left.png')}
/>
</TouchableOpacity>
</View>,
}
}
It's throwing this.setState is not an function
Please let me know how to achieve this. How can we change value of state from static navigationOptions
You can use redux store.
store.js
import ReduxThunk from "redux-thunk";
import { createStore, combineReducers, applyMiddleware } from "redux";
import authReducer from "./reducers/auth";
import dashboardReducer from "./reducers/dashboard";
import profileReducer from "./reducers/profile";
const rootReducer = combineReducers({
auth: authReducer,
dashboard: dashboardReducer,
profile: profileReducer
});
export default createStore(rootReducer, applyMiddleware(ReduxThunk));
Dashboard.js
import React, { Component } from "react";
import {
View,
Text,
Image,
StyleSheet,
Dimensions,
TouchableOpacity,
ScrollView,
ActivityIndicator
} from "react-native";
import OrientationScreen from "./OrientationScreen";
import { connect, useDispatch } from "react-redux";
import store from "../store/store";
class Dashboard extends Component {
render() {
const dashboard = this.props;
if (dashboard.orientation) {
return <OrientationScreen />;
} else {
return (
<View style={styles.screen}>
{this.props.dashboard.loading && (
<View style={styles.loading}>
<ActivityIndicator color={Colors.blueButton} size="large" />
</View>
)}
<Text>You are logged in</Text>
</View>
);
}
}
_openOrientation() {
store.dispatch(dashboardActions.openOrientation());
}
static navigationOptions = ({ navigation, navigationOptions }) => {
const params = navigation.state.params || {};
return {
headerTitle: "Dashboard",
headerRight: (
<HeaderButtons HeaderButtonComponent={HeaderButton}>
<Item
Title="Orientation"
iconName="ios-help-circle-outline"
iconSize={30}
onPress={params.openOrientation}
/>
<Item
Title="Menu"
iconName="ios-menu"
iconSize={30}
onPress={() => navigation.toggleDrawer()}
/>
</HeaderButtons>
)
};
}
}
const mapStateToProps = state => {
const { auth, dashboard } = state;
return { auth, dashboard };
};
export default connect(mapStateToProps)(Dashboard);
actions/dashboard.js
const openOrientation = () => {
return dispatch => {
return dispatch({
type: "OPEN_ORIENTATION"
});
};
};
export default {
openOrientation
};
reducers/dashboard.js
const initialState = {
loading: false,
error: null,
orientation: false,
UserData: null
};
export default (state = initialState, action) => {
switch (action.type) {
case "OPEN_ORIENTATION":
return {
...state,
orientation: true
};
case "CLOSE_ORIENTATION":
return {
...state,
orientation: false
};
case "LOADING":
return {
...state,
error: null,
loading: true
};
default:
return state;
}
};
SwiperFlatList.js
import React, { PureComponent } from "react";
import { Text, Dimensions, Image, StyleSheet, View } from "react-native";
import SwiperFlatList from "react-native-swiper-flatlist";
export default class OrientationScreen extends PureComponent {
constructor(props) {
super(props);
this.state = {
images: [
require("../assets/images/SLIDE-1.jpg"),
require("../assets/images/SLIDE-2.jpg"),
require("../assets/images/SLIDE-3.jpg"),
require("../assets/images/SLIDE-4.jpg"),
require("../assets/images/SLIDE-5.jpg"),
require("../assets/images/SLIDE-6.jpg"),
require("../assets/images/SLIDE-7.jpg"),
require("../assets/images/SLIDE-8.jpg"),
require("../assets/images/SLIDE-9.jpg"),
require("../assets/images/SLIDE-10.jpg"),
require("../assets/images/SLIDE-11.jpg"),
require("../assets/images/SLIDE-12.jpg"),
require("../assets/images/SLIDE-13.jpg"),
require("../assets/images/SLIDE-14.jpg"),
require("../assets/images/SLIDE-15.jpg"),
require("../assets/images/SLIDE-16.jpg"),
require("../assets/images/SLIDE-17.jpg"),
require("../assets/images/SLIDE-18.jpg"),
require("../assets/images/SLIDE-19.jpg"),
require("../assets/images/SLIDE-20.jpg"),
require("../assets/images/SLIDE-21.jpg"),
require("../assets/images/SLIDE-22.jpg"),
require("../assets/images/SLIDE-23.jpg"),
require("../assets/images/SLIDE-24.jpg"),
require("../assets/images/SLIDE-25.jpg"),
require("../assets/images/SLIDE-26.jpg"),
require("../assets/images/SLIDE-27.jpg"),
require("../assets/images/SLIDE-28.jpg"),
require("../assets/images/SLIDE-29.jpg"),
require("../assets/images/SLIDE-30.jpg"),
require("../assets/images/SLIDE-31.jpg"),
require("../assets/images/SLIDE-32.jpg")
]
};
}
render() {
const orientationBody = this.state.images.map((item, i) => {
return (
<View key={i} style={styles.child}>
<Image
source={item}
resizeMode="contain"
style={styles.imageprofile}
/>
</View>
);
});
return (
<View style={styles.container}>
<SwiperFlatList
index={0}
removeClippedSubviews={false}
showPagination={false}
>
{orientationBody}
</SwiperFlatList>
</View>
);
}
}
export const { width, height } = Dimensions.get("window");
const styles = StyleSheet.create({
container: {
flex: 1,
backgroundColor: "white"
},
child: {
height: height * 0.8,
width,
justifyContent: "center"
},
text: {
fontSize: width * 0.5,
textAlign: "center"
},
imageprofile: {
width: "100%"
}
});