I have created a navigation setup for my application that should start off with a welcome screen on the welcome screen you find two buttons, one for registering and the other for logging in.
When the user registers or logs in he get sent to other screens. I have created a stack navigator between the log in and register screen and put them in a loginFlow constant and another between the welcome screen and the loginFlow constant and the navigation between these screens works, but for some reason the welcome screen doesn't get shown first instead I get the sign up screen (register screen).
Why is that the case and how can i make the welcomeScreen get shown first
import React from "react";
import { View } from "react-native";
import WeclomeScreen from "./app/screens/WelcomeScreen";
import MainScreen from "./app/screens/MainScreen";
import AccountScreen from "./app/screens/AccountScreen";
import { Provider as AuthProvider } from "./app/context/AuthContext";
import { createMaterialBottomTabNavigator } from "react-navigation-material-bottom-tabs";
import SignupScreen from "./app/screens/SignupScreen";
import { createAppContainer, createSwitchNavigator } from "react-navigation";
import { createStackNavigator } from "react-navigation-stack";
import ResultShowScreen from "./app/screens/ResultShowScreen";
import ResolveAuthScreen from "./app/screens/ResolveAuthScreen";
import SigninScreen from "./app/screens/SigninScreen";
import ArticleSaveScreen from "./app/screens/ArticleSaveScreen";
import { setNavigator } from "./app/navigationRef";
const articleListFlow = createStackNavigator({
Main: MainScreen, // screen with diffrent articles categories
ResultsShow: ResultShowScreen, // article details screen
});
const loginFlow = createStackNavigator({
Signup: SignupScreen,
Signin: SigninScreen,
});
loginFlow.navigationOptions = () => {
return {
headerShown: false,
};
};
articleListFlow.navigationOptions = {
title: "News Feed",
tabBarIcon: ({ tintColor }) => (
<View>
<Icon style={[{ color: tintColor }]} size={25} name={"ios-cart"} />
</View>
),
activeColor: "#ffffff",
inactiveColor: "#ebaabd",
barStyle: { backgroundColor: "#d13560" },
};
const switchNavigator = createSwitchNavigator({
ResolveAuth: ResolveAuthScreen,
MainloginFlow: createStackNavigator({
WelcomeScreen: WeclomeScreen,
loginFlow: loginFlow,
}),
mainFlow: createMaterialBottomTabNavigator(
{
articleListFlow: articleListFlow,
ArticleSave: ArticleSaveScreen, // we dont need this one
Account: AccountScreen,
},
{
activeColor: "#ffffff",
inactiveColor: "#bda1f7",
barStyle: { backgroundColor: "#6948f4" },
}
),
});
const App = createAppContainer(switchNavigator);
export default () => {
return (
<AuthProvider>
<App
ref={(navigator) => {
setNavigator(navigator);
}}
/>
</AuthProvider>
);
};
here is the content of ResolveAuthscreen :
import React, { useEffect, useContext } from "react";
import { Context as AuthContext } from "../context/AuthContext";
const ResolveAuthScreen = () => {
const { tryLocalSignin } = useContext(AuthContext);
useEffect(() => {
tryLocalSignin();
}, []);
// not returning anything since just waiting to check the token
// will transition to signin or signup very quickly
return null;
};
export default ResolveAuthScreen;
As you have mentioned in your comments, you have an issue in your tryLocalSignin method. In that method, if there is no any token, you are navigating the user to the Signup screen. Instead of navigating to the Signup screen, navigate to the WelcomeScreen screen like:
const tryLocalSignin = (dispatch) => async () => {
const token = await AsyncStorage.getItem("token");
if (token) {
dispatch({ type: "signin", payload: token });
navigate("Main");
} else {
navigate("WelcomeScreen");
}
};
Related
I have added react-navigation-drawer for implementing drawer navigation in my app. I have created a file named PrimaryNav.js and added all navigation code in it.
import Login from './components/Login';
import Employee from './pages/Employee';
import { createAppContainer,SafeAreaView, } from 'react-navigation'
import { createDrawerNavigator, DrawerItems } from 'react-navigation-drawer';
import React from 'react';
const Primary_Nav = createDrawerNavigator({
Login: {
screen: Login,
navigationOptions: {
drawerLabel: () => null
}
},
Home_kitchen: {
screen: Home_kitchen,
navigationOptions: {
drawerLabel: "Home"
}
},
Employee: {
screen: Employee,
navigationOptions:{
drawerLabel:"Employee",
}
},
},{
initialRouteName:'Login',
drawerPosition: 'left',
drawerType: "slide",
}
});
const PrimaryNav = createAppContainer(Primary_Nav);
export default PrimaryNav;
Something like above. I have called this file in the App.js, the issue I am facing is I need to set a drawer item based on the role which the user has. So if the user role is cashier he should not be able to see all the menu.
All the pages are coming properly in the drawer menu but the question is how should I want to manage menu role wise in my app and changed the menu based on the roles of the user?
hi I saw your issue and I am trying to helping you.
I have make a custom design for drawer components .
-firstly you can create a extra file for drawer Design like DrawerComponent.js
and import in your code where you are create a drawer navigator
import DrawerComponent from "./DrawerComponent";
const Primary_Nav = createDrawerNavigator(
{
Login: {
screen: Login,
navigationOptions: {
drawerLabel: () => null
}
},
Home_kitchen: {
screen: Home_kitchen,
navigationOptions: {
drawerLabel: "Home"
}
},
Employee: {
screen: Employee,
navigationOptions: {
drawerLabel: "Employee"
}
}
},
{
initialRouteName: "Login",
drawerPosition: "left",
drawerType: "slide",
contentComponent: DrawerComponent // i added this DrawerComponent
}
);
const PrimaryNav = createAppContainer(Primary_Nav);
export default PrimaryNav;
now in the DrawerComponent.js
import React, { Component } from "react";
import { Text, View, TouchableOpacity } from "react-native";
export default class DrawerComponent extends Component {
constructor(props) {
super(props);
this.state = {
role: 1 // i used 1 for cashier and 0 for chef
};
}
render() {
const { role } = this.state;
const { navigation } = this.props;
return (
<View style={{ flex: 1, paddingVertical: 40, paddingHorizontal: 20 }}>
<TouchableOpacity
style={{ margin: 20 }}
onPress={() => navigation.navigate("Home_kitchen")}
>
<Text>Home</Text>
</TouchableOpacity>
{role ? (
<TouchableOpacity
style={{ margin: 20 }}
onPress={() => navigation.navigate("Employee")}
>
<Text>Employee</Text>
</TouchableOpacity>
) : null}
</View>
);
}
}
if you are change the role to 0 then the Employee tab is disable in Drawer Navigator I have user the ternary operator for conditions. you can modify is as you can want. hope it will helpful for you.
I am a beginner in react native and very confused about navigation between two screens after x second delay.
How can I move from splash screen to login screen after some seconds in react native?
this is how iv'e achieved that by having a splashscreen as inital route in stackNavigator and then in componentDidMount after 3 secs im navigating to LoginScreen.
{
initialRouteName: "SplashScreen"
}
this is inside the stack navigator.
and inside the componentDidMount of the splashScreen class im doing this
componentDidMount(){
window.setTimeout(async () => {
const token = await isSignedIn();
this.props.navigation.navigate(token ? 'HomeScreen' : 'OnBoardingScreen');
}, 3000);
}
so what im doing is, im checking if token is stored in asyncStorage by the isSignedIn(). and if token is present then im navigating to HomeScreen or LoginScreen respectively after 3 secs.(3000 denotes in ms)
Feel free for doubts.
UPDATE:
import React, { Component } from 'react';
import { View, StatusBar } from 'react-native';
import { isSignedIn } from '../../services/auth';
import Animation from "lottie-react-native";
import styles from './SplashScreenStyle';
export default class SplashScreen extends Component {
componentDidMount() {
StatusBar.setHidden(true);
this._playAnimation();
window.setTimeout(async () => {
const token = await isSignedIn();
this.props.navigation.navigate(token ? 'HomeScreen' : 'OnBoardingScreen');
}, 2120);
}
state = {
animation: null,
};
_playAnimation = () => {
if (!this.state.animation) {
this._loadAnimationAsync();
} else {
this.animation.play();
}
};
_loadAnimationAsync = async () => {
let result = await fetch(
"https://assets1.lottiefiles.com/packages/lf20_vi3n1R.json"
)
.then(data => {
return data.json();
})
.catch(error => {
console.error(error);
});
this.setState({ animation: result }, this._playAnimation);
};
render() {
return (
<View style={styles.animationContainer}>
{this.state.animation && (
<Animation
ref={animation => {
this.animation = animation;
}}
style={{ width: 200, height: 200, backgroundColor: "transparent" }}
source={this.state.animation}
/>
)}
</View>
);
}
}
I'm actually working on single page navigation, tab navigation and Drawer navigation by using react native navigation.
After the drawer implementation is done, single page navigation is working fine but the whole application is getting crashed after clicking on a login button.
Take a look at the code that I have written :
app.js:
import { Navigation } from 'react-native-navigation';
import AuthScreen from './src/screens/Auth/Auth';
import SharePlaceScreen from './src/screens/SharePlace/SharePlace';
import FindPlaceScreen from './src/screens/FindPlace/FindPlace';
import SideDrawer from "./src/screens/SideDrawer/SideDrawer";
// register screens
Navigation.registerComponent('example.AuthScreen', () => AuthScreen);
Navigation.registerComponent('example.SharePlaceScreen', () => SharePlaceScreen);
Navigation.registerComponent('example.FindPlaceScreen', () => FindPlaceScreen);
Navigation.registerComponent('example.SideDrawer', () => SideDrawer);
// start a app
Navigation.startSingleScreenApp({
screen: {
screen:'example.AuthScreen',
title:"Login"
}
})
startMainTab.js
import { Navigation } from 'react-native-navigation';
import {Dimensions} from 'react-native';
import Icon from 'react-native-vector-icons/MaterialIcons';
const wDim = Dimensions.get('window');
const fixedWidth = Math.round(wDim.width * wDim.scale * 0.8);
const startTab = () =>{
Promise.all([
Icon.getImageSource("map",30),
Icon.getImageSource("share",30),
Icon.getImageSource("menu",30),
]).then(sources =>{
Navigation.startTabBasedApp({
tabs: [
{
screen:"example.AuthScreen",
label : "Find Place",
title : "Find Place",
icon : sources[0],
navigatorButtons:{
leftButton:[
{
icon:sources[2],
title:"Menu",
id:"sideDrawerToggle"
}
]
}
},
{
screen:"example.AuthScreen",
label : "Share Place",
title : "Share Place",
icon : sources[1],
navigatorButtons:{
leftButton:[
{
icon:sources[2],
title:"Menu",
id:"sideDrawerToggle"
}
]
}
}
],
drawer: {
left: {
screen:"example.SideDrawer"
}
}
});
})
}
export default startTab;
SideDrawer.js
import React, { Component } from 'react';
import {View,Text,Dimensions,StyleSheet} from 'react-native';
class SideDrawer extends Component{
render(){
return(
<View >
<Text
style={[styles.container,{width:Dimensions.get("window").width*0.8}]}>
On SideDrawer
</Text>
</View>
)
}
}
const styles = StyleSheet.create({
container:{
paddingTop:22,
backgroundColor:"white",
flex:1
}
})
export default SideDrawer;
sharePlace.js
import React,{ Component } from 'react';
import {View,Text} from 'react-native';
class SharePlaceScreen extends Component{
constructor(props){
super(props);
props.navigator.setOnNavigatorEvent(this.onNavigatorEvent.bind(this));
}
onNavigatorEvent = event => {
console.log(events)
if(event.type === "NavBarButtonPress"){
if(event.id === "sideDrawerToggle"){
this.props.navigator.toggleDrawer({
side: 'left'
})
}
}
}
render(){
return(
<View>
<Text>On Share place screen</Text>
</View>
);
}
}
export default SharePlaceScreen;
leftButton: [
{
icon: sources[2],
title: "Menu",
id: "sideDrawerToggle"
}
]
This should be ,
leftButtons: [
{
icon: sources[2],
title: "Menu",
id: "sideDrawerToggle"
}
]
Follow this link :
https://wix.github.io/react-native-navigation/#/adding-buttons-to-the-navigator.
Hope this helps you. :)
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,
})),
};
React native Stack Navigator goes to the home page the default route (initialroutename) from every page of the app I want to go to previous pages from few pages and disable going to the back page from few pages. Back Handler is not even helping in this case. How can I achieve this
class AppNavigator extends Component {
constructor(props) {
super(props)
this.handleBackButtonClick = this.handleBackButtonClick.bind(this);
}
componentWillMount() {
BackHandler.addEventListener('hardwareBackPress', this.handleBackButtonClick);
}
componentWillUnmount() {
BackHandler.removeEventListener('hardwareBackPress', this.handleBackButtonClick);
}
handleBackButtonClick() {
this.props.navigation.goBack();
return true;
}
render() {
return;
}
}
export default AppNavigator;
Code for Drawer Navigator. All routes are also defined here.
import React from "react";
import { DrawerNavigator } from "react-navigation";
import Home from "./components/home/";
import SideBar from "./components/sidebar";
import Dashboard from "./components/Dashboard/";
import Profile from "./components/Profile"
import Contact from "./components/Contact"
import Terms from "./components/terms"
import Links from "./components/Links"
import Register from "./components/Register"
import Discover from "./components/Discover/";
const Drawer = DrawerNavigator(
{
Home: { screen: Home },
Dashboard: { screen: Dashboard },
Discover: { screen: Discover }
Profile : {screen: Profile},
Contact: { screen: Contact},
Terms: { screen: Terms},
Links: { screen: Links},
Register: { screen: Register,
navigationOptions: {
title: "FirstPage",
header: {
left: null,
}
}, },
},
{
initialRouteName: "Home",
contentOptions: {
activeTintColor: "#e91e63"
},
drawerPosition: 'right',
contentComponent: props => <SideBar {...props} />
}
);
export default Drawer;
Why are you handling a back event? instead, use navigation reset property that will reset your route to 0 and user will never go back because stake is empty