Develop Reference

React Native Navigation by Wix - bottomTabs not working

I'm trying to add bottomTabs to my React Native app but it doesn't show and doesn't throw any errors at me. When I compile it, the "Hello World" text shows up perfectly and the topBar even works as it should, but I just can't get the bottomTabs working.
The Code :
import React from 'react';
import {
Text,
View
} from 'react-native';
import { Navigation } from 'react-native-navigation';
import HomeScreen from './HomeScreen';
const SavedScreen = () => {
return(
<View>
<Text>Hello world!</Text>
</View>
);
}
Navigation.registerComponent('HomeScreen', () => HomeScreen);
Navigation.registerComponent('InfoScreen', () => InfoScreen);
Navigation.events().registerAppLaunchedListener(async () =>{
Navigation.setRoot({
root:{
bottomTabs: {
id: 'BOTTOM_TABS_LAYOUT',
children: [
{
stack: {
id: 'HOME_TAB',
children: [
{
component: {
id: 'HOME_SCREEN',
name: 'HomeScreen'
}
}
],
options: {
bottomTab: {
icon: require('../assets/images/home.png')
}
}
}
},
{
stack: {
id: 'SAVED_TAB',
children: [
{
component: {
id: 'SAVED_SCREEN',
name: 'SavedScreen'
}
}
],
options: {
bottomTab: {
icon: require('../assets/images/home.png')
}
}
}
}
]
}
}
})
})
export default SavedScreen;
I'm using React Native Navigation version 7.11.2

How to create global android device back button handler using React Native?

In my scenario, I am trying to create global class for android back button handler and reuse it in multiple screen class files. How to do it? I tried below code but I dont know how to access common class from other classes.
My Code Below (Androidhandler.tsx)
export default class hardware extends Component {
constructor(props) {
super(props);
this.BackButton = this.BackButton.bind(this);
}
componentWillMount() {
BackHandler.addEventListener'BackPress',this.BackButton);
}
componentWillUnmount() {
BackHandler.removeEventListener('BackPress',this.BackButton);
}
BackButton() {
if(this.props.navigation){
this.props.navigation.goBack(null);
return true;
}
}
}

the following code allows to show an alert when you want to go back with the android back button, what you need is to use the react native BackHandler component as follows.
import { BackHandler } from "react-native"
export default class hardware extends Component {
constructor(props) {
super(props);
this.BackButton = this.BackButton.bind(this);
}
componentDidMount() {
BackHandler.addEventListener('hardwareBackPress', this.BackButton);
}
componentWillUnmount() {
BackHandler.removeEventListener('hardwareBackPress', () => {
if (this.props.navigator && this.props.navigator.getCurrentRoutes().length > 1) {
this.navigator.pop();
return true;
}
return false;
});
}
BackButton() {
Alert.alert(
'Warning',
'Are you sure to leave?',
[
{
text: 'Cancel',
style: 'cancel'
},
{ text: 'OK', onPress: () => BackHandler.exitApp() }
],
);
return true;
}
}

How to use react-native-flash-message with react-native-navigation

I am using Wix's react-native-navigation and I want to use react-native-flash-message. In the official document https://www.npmjs.com/package/react-native-flash-message, they have given we can use globally as well as locally but in my code, I am not getting where should I use it.
following is my code.
this is my app.js
import { Navigation } from "react-native-navigation";
import { Provider } from "react-redux";
import registerScreens from './components/Screens'
import Icon from 'react-native-vector-icons/FontAwesome';
import configureStore from "./store/configureStore";
const store = configureStore();
registerScreens(Provider, store);
// Start a App
Navigation.events().registerAppLaunchedListener(() => {
Promise.all([
Icon.getImageSource("bars", 30, 'black'),
Icon.getImageSource("share-alt", 30, 'black')
]).then(sources => {
Navigation.setRoot({
root: {
sideMenu: {
left: {
component: {
name: 'app.NavigationDrawer',
passProps: {
text: 'This is a left side menu screen'
}
}
},
center: {
stack: {
id: 'mainStack',
children: [
{
stack: {
id: 'tab1Stack',
children: [
{
component: {
name: 'app.Component'
}
}
],
options: {
topBar: {
background: {
color: '#50A7C2',
},
title: {
text: 'Namaz Timing',
fontSize: 20,
//color: 'white',
fontFamily: 'Ubuntu',
alignment: 'left'
},
leftButtons: [
{
id: 'buttonOne',
icon: sources[0]
}
],
rightButtons: [
{
id: 'buttonTwo',
icon: sources[1]
}
]
}
}
}
},
],
options: {
topBar: {
background: {
color: '#50A7C2',
}
},
}
}
}
}
}
});
});
});
And this is my function where I want to use it
import qs from 'qs';
import { AsyncStorage } from 'react-native';
export async function addMasjid(Name, Address, email, Timing1, Timing2, Timing3, Timing4, Timing5, Timing6, Timing7) {
const Data = await AsyncStorage.getItem('tokenData');
parsed = JSON.parse(Data)
var token = parsed.access_token;
return fetch(`URL`, {
method: 'POST',
headers: {
'Accept': 'application/json',
'Content-Type': 'application/x-www-form-urlencoded',
},
body: qs.stringify({
'name': Name,
'address': Address,
'email': email,
'time_': Timing,
'time_': Timing,
'time_': Timing,
'time_': Timing,
'time_': Timing,
'time_': Timing,
'time_': Timing,
})
})
.then(res => res.json())
.catch(err => console.log(err))

Import the Flash Message component in your App.js and call it in the bottom.
App.js
import React from "react";
import { View } from "react-native";
import FlashMessage from "react-native-flash-message";
export default class App extends React.Component {
render() {
return (
<View style={{ flex: 1 }}>
// your entire code
<FlashMessage position="top" /> <--- at the bottom
</View>
);
}
}
Now, in your file where you wanna use it.
import { showMessage, hideMessage } from "react-native-flash-message";
Then, just use showMessage in the function you want to. Example:
const someFunc = () => {
showMessage({
message : 'some message',
type: 'success'
... other attributes
})
}

React-navigation dynamic child screens

I'm in the process of creating a social media app and I've the following diagram of screen transition:
Main -> Profile -> Followers -> John's Profile -> John's Followers ->
Emily's Profile -> ....
How can I implement a flow like this? Currently my router implementation is buggy, I can not go nested, it returns the previous screen.
Here is the part of the router to express my problem:
const appStack = createStackNavigator(
{
[PROFILE_STACK]: { screen: profileStack },
[PROFILE_FOLLOWERS_STACK]: { screen: profileFollowersStack },
[PROFILE_FOLLOWINGS_STACK]: { screen: profileFollowingsStack }
},
{
initialRouteName: PROFILE_STACK,
headerMode: "none"
}
);
const profileStack = createStackNavigator(
{
[PROFILE]: {
screen: UserProfileScreen,
navigationOptions: () => ({
header: null
})
}
},
{
initialRouteName: PROFILE
}
);
const profileFollowersStack = createStackNavigator(
{
[PROFILE_FOLLOWERS]: {
screen: UserFollowersScreen,
navigationOptions: () => ({
header: null
})
}
},
{
initialRouteName: PROFILE_FOLLOWERS
}
);
const profileFollowingsStack = createStackNavigator(
{
[PROFILE_FOLLOWINGS]: {
screen: UserFollowingsScreen,
navigationOptions: () => ({
header: null
})
}
},
{
initialRouteName: PROFILE_FOLLOWINGS
}
);
export const goUserProfile = function(navigation, userId) {
const { navigate } = navigation;
navigate(PROFILE_STACK, {
userId: userId
});
};
export const goUserFollowers = function(navigation, userId) {
const { push } = navigation;
push(PROFILE_FOLLOWERS_STACK, {
userId: userId
});
};
export const goUserFollowings = function(navigation, userId) {
const { push } = navigation;
push(PROFILE_FOLLOWINGS_STACK, {
userId: userId
});
};

The problem was I was using navigate() method in my goUserProfile(), not push(). After using push(), my problem is solved.
Reference:
React Navigation V2: Difference between navigation.push and navigation.navigate

Global in-app notifications

I wish to utilize an in-app notification system, aka a more attractive and less in your face' use of alerts to let the user know what actions are being done, especially when for instance a barcode has been detected but it needs to send that barcode to the server and the user needs to wait.
I have found this lib and have attempted to implement it; but as I am using React Navigation and I wish to render the item at the very top of the application, it gets cut off by React Native header
Is it possible to have a function I can create and reference whenever I want a global notification and it will render on the very top I would imagine it would need to render here:
import React from 'react';
import { createBottomTabNavigator,createStackNavigator } from 'react-navigation';
import SearchTab from './components/Tabs/SearchTab';
import HomeTab from './components/Tabs/HomeTab';
import ScannerTab from './components/Tabs/ScannerTab';
import SettingsTab from './components/Tabs/SettingsTab';
import Ionicons from 'react-native-vector-icons/Ionicons';
import StockModal from './components/Modals/StockModal';
const MainStack = createBottomTabNavigator(
{
Home: HomeTab,
Search: SearchTab,
Scanner: ScannerTab,
Settings: SettingsTab,
//Todo: Total overlay modals HERE
},
{
navigationOptions: ({ navigation }) => ({
tabBarIcon: ({ focused, tintColor }) => {
const { routeName } = navigation.state;
let iconName;
if (routeName === 'Home') {
iconName = `ios-information-circle${focused ? '' : '-outline'}`;
} else if (routeName === 'Settings') {
iconName = `ios-options${focused ? '' : '-outline'}`;
}else if (routeName === 'Scanner') {
iconName = `ios-barcode${focused ? '' : '-outline'}`;
}else if (routeName === 'Search') {
iconName = `ios-search${focused ? '' : '-outline'}`;
}
return <Ionicons name={iconName} size={25} color={tintColor} />;
},
}),
tabBarOptions: {
activeTintColor: 'tomato',
inactiveTintColor: 'gray',
},
}
);
export default RootStack = createStackNavigator(
{
Main: {
screen: MainStack,
},
QuickStockScreen: {
screen: StockModal,
},
},
{
mode: 'modal',
headerMode: 'none',
}
);
But even if that's possible, I am not sure how its possible to build a function that tells the notification to show; React Redux comes to mind but I don't wish to implement such a cumbersome system just for one feature and it was something I considered when creating his application and decided against.
The notification system in question (not very clear documentation or examples sadly) https://www.npmjs.com/package/react-native-in-app-notification
Here is the navigation lib I am using: https://reactnavigation.org/

What you want would be a component that is a the same level of the navigation (So it can display over it). In multiple projects, I use react-native-root-siblings to do so. It allows you to add UI over the app and so over the navigation.
An exemple how what I made with it. The dark layer and the box at the bottom are part of the Siblings Component.
https://gyazo.com/7ad3fc3fea767ea84243aaa493294670
The Siblings is used like the Alert of React-Native, so as a function (which is quite useful!)
messageMenu.js
import React, { Component } from 'react';
import RootSiblings from 'react-native-root-siblings';
import MessageMenuContainer from './MessageMenuContainer';
export default class Dialog extends Component {
static show = (props) => new RootSiblings(<MessageMenuContainer {...props} />);
static update = (menu, props) => {
if (menu instanceof RootSiblings) {
menu.update(<MessageMenuContainer {...props} />);
} else {
console.warn(`Dialog.update expected a \`RootSiblings\` instance as argument.\nBut got \`${typeof menu}\` instead.`);
}
}
static close = (menu) => {
if (menu instanceof RootSiblings) {
menu.destroy();
} else {
console.warn(`Dialog.destroy expected a \`RootSiblings\` instance as argument.\nBut got \`${typeof menu}\` instead.`);
}
}
render() {
return null;
}
}
export {
RootSiblings as Manager,
};
Where the MessageMenuContainer is your component to render at the top.
Component using the Root Siblings:
import React from 'react';
import PropTypes from 'prop-types';
import I18n from 'react-native-i18n';
import { BackHandler, Keyboard, Platform, TouchableOpacity } from 'react-native';
import { connect } from 'react-redux';
import { bindActionCreators } from 'redux';
import DraftMenu from './messageMenu'; //HERE IS THE IMPORT YOU WANT
import { Metrics, Colors, Fonts } from '../../main/themes';
class DraftBackButton extends React.Component {
state = {
draftMenu: undefined,
}
componentDidMount() {
BackHandler.addEventListener('hardwareBackPress', this.handleBackAndroid);
}
componentWillUnmount() {
BackHandler.removeEventListener('hardwareBackPress', this.handleBackAndroid);
}
handleBackAndroid = () => {
this.handleBack();
return true;
}
handleBack = async () => {
Keyboard.dismiss();
await this.openDraftMenu();
}
openDraftMenu = async () => {
if (this.state.draftMenu) {
await DraftMenu.update(this.state.draftMenu, this.draftMenuProps());
} else {
const draftMenu = await DraftMenu.show(this.draftMenuProps());
this.setState({ draftMenu: draftMenu });
}
}
draftMenuProps = () => ({
options: [
{ title: I18n.t('message.deleteDraft'), onPress: this.deleteDraft, icon: 'trash' },
{ title: I18n.t('message.saveDraft'), onPress: this.saveOrUpdateDraft, icon: 'documents' },
{ title: I18n.t('cancel'), icon: 'close', style: { backgroundColor: Colors.tertiaryBackground } },
],
destroyMenuComponent: async () => {
DraftMenu.close(this.state.draftMenu);
await this.setState({ draftMenu: undefined });
},
withIcon: true,
})
saveOrUpdateDraft = async () => {
// SAVE OR UPDATE DRAFT. NOT IMPORTANT
}
saveDraft = async () => {
// SAVING THE DRAFT
}
updateDraft = async () => {
// UPDATING THE DRAFT
}
deleteDraft = async () => {
// DELETING THE DRAFT
}
render() {
return (
<TouchableOpacity
hitSlop={Metrics.touchable.largeHitSlop}
onPress={() => {
this.handleBack();
}}
>
<Text>BUTTON</Text>
</TouchableOpacity>
);
}
}
DraftBackButton.propTypes = {
// ALL THE PROPTYPES
};
function mapStateToProps(state, ownProps) {
//
}
function mapDispatchToProps(dispatch) {
return {
actions: bindActionCreators({ fetchMessages }, dispatch),
};
}
export default connect(mapStateToProps, mapDispatchToProps)(DraftBackButton);
The best thing with this lib is that you can call the .show anywhere in your app and it will render at the very top!
Hope it's what you're looking for!
EDIT:
I updated the example of how to use the Root Siblings.
Here's the content of my MessageContainer which will be display on top of everything
import React from 'react';
import PropTypes from 'prop-types';
import { Animated, Dimensions, InteractionManager, StyleSheet, TouchableOpacity, View } from 'react-native';
import MessageMenuItem from './MessageMenuItem';
import { Colors } from '../../../main/themes';
const { width, height } = Dimensions.get('window');
const OPTION_HEIGHT = 55;
const OVERLAY_OPACITY = 0.5;
export default class DraftMenuContainer extends React.Component {
constructor(props) {
super(props);
this.state = {
animatedHeight: new Animated.Value(0),
animatedOpacity: new Animated.Value(0),
menuHeight: props.options.length * OPTION_HEIGHT,
};
}
componentDidMount() {
this.onOpen();
}
// Using Animated from react-native to make the animation (fade in/out of the dark layer and the dimensions of the actual content)
onOpen = async () => {
await this.state.animatedHeight.setValue(0);
await this.state.animatedOpacity.setValue(0);
Animated.parallel([
Animated.timing(this.state.animatedHeight, { toValue: this.state.menuHeight, duration: 200 }),
Animated.timing(this.state.animatedOpacity, { toValue: OVERLAY_OPACITY, duration: 200 }),
]).start();
}
onClose = async () => {
await this.state.animatedHeight.setValue(this.state.menuHeight);
await this.state.animatedOpacity.setValue(OVERLAY_OPACITY);
Animated.parallel([
Animated.timing(this.state.animatedHeight, { toValue: 0, duration: 200 }),
Animated.timing(this.state.animatedOpacity, { toValue: 0, duration: 200 }),
]).start(() => this.props.destroyMenuComponent()); // HERE IS IMPORTANT. Once you're done with the component, you need to destroy it. To do so, you need to set a props 'destroyMenuComponent' which is set at the creation of the initial view. See the other code what it actually do
}
render() {
return (
<View style={styles.menu}>
<Animated.View style={[styles.backgroundOverlay, { opacity: this.state.animatedOpacity }]}>
<TouchableOpacity
activeOpacity={1}
onPress={() => this.onClose()}
style={{ flex: 1 }}
/>
</Animated.View>
<Animated.View style={[styles.container, { height: this.state.animatedHeight }]}>
{this.props.options.map((option, index) => (
<MessageMenuItem
height={OPTION_HEIGHT}
icon={option.icon}
key={index}
onPress={async () => {
await this.onClose();
InteractionManager.runAfterInteractions(() => {
if (option.onPress) {
option.onPress();
}
});
}}
style={option.style}
title={option.title}
withIcon={this.props.withIcon}
/>
))}
</Animated.View>
</View>
);
}
}
DraftMenuContainer.propTypes = {
destroyMenuComponent: PropTypes.func.isRequired,
withIcon: PropTypes.bool,
options: PropTypes.arrayOf(PropTypes.shape({
icon: PropTypes.string.isRequired,
onPress: PropTypes.func,
title: PropTypes.string.isRequired,
})),
};