I use BottomTabNavigator from reactnavigation v5. The problem is when switching the pages from bottom tab navigator to the page that is heavier than other pages in terms of rendering elements the screen jumps/flitters for a second to resize. I have noticed it does appear on both platforms but it is more noticeable in android. I have recorded the screen to demonstrate the issue. Any ideas on how to solve the bug would be great.
https://www.youtube.com/watch?v=U6OfVeNafMI
(Check it out when switching to the home screen)
This is how I am using bottomTabNavigator:
const AppNavigator = (props) => {
const { language } = props;
return (
<Tab.Navigator
tabBarOptions={{
activeBackgroundColor: data.colors.superdark_blue,
inactiveBackgroundColor: data.colors.dark_blue,
activeTintColor: data.colors.nice_orange,
inactiveTintColor: "#c9c9c9",
tabStyle: {
zIndex: 100,
},
labelPosition: "below-icon",
tabStyle: {
justifyContent: "center",
paddingTop: 5,
paddingBottom: 5,
borderTopWidth: 1,
borderTopColor: data.colors.dark_blue,
alignItems: "center",
},
labelStyle: {
textAlign: "center",
alignItems: "center",
fontSize: language === "FA" ? 12 : 11,
fontFamily: language === "FA" ? "Yekan" : "Heebo",
},
style: {
backgroundColor: data.colors.dark_blue,
}
}}
screenOptions={({ route }) => ({
tabBarIcon: ({ focused, color, size }) => {
if (route.name === "HOME") {
return (
<Feather name={"home"} size={17} color={color} />
);
} else if (route.name === "OFFERS") {
return (
<AntDesign
name={"notification"}
size={17}
color={color}
/>
);
} else if (route.name === "SAVED") {
return (
<Feather
name={"bookmark"}
size={17}
color={color}
/>
);
} else if (route.name === "CONTACT") {
return (
<Feather
name={"settings"}
size={17}
color={color}
/>
);
}
},
})}
>
<Tab.Screen
name="HOME"
component={HomeStack}
options={{
tabBarLabel: data.bottomNavigatorHeader[language].home,
}}
/>
<Tab.Screen
name="SAVED"
component={FavoritesStack}
options={{
tabBarLabel: data.bottomNavigatorHeader[language].bookmarks,
}}
/>
<Tab.Screen
name="OFFERS"
component={MagazineStack}
options={{
tabBarLabel: data.bottomNavigatorHeader[language].offers,
}}
/>
<Tab.Screen
name="CONTACT"
component={ContactStack}
options={{
tabBarLabel: data.bottomNavigatorHeader[language].contact,
}}
/>
</Tab.Navigator>
);
};
Every tabscreen component as you might guess from their names is also a stackNavigator with a few pages and AppNavigator is wrapped in NavigationContainer in App.js
Related
I'm working on a dental app in which there are icons in almost every screens. But, suddenly all the icons are not visible and just show a box with a question mark. The icon groups keep throwing errors. I changed the way the icons were imported according to expo icons document but it still wasn't working. This is the error I'm getting:
Code of one of the screens in which I am using the icons:
import React, { Component } from "react";
import * as db from '../Config/Firebase';
import {
View,
Text,
StatusBar,
TouchableOpacity,
FlatList,
} from "react-native";
import AntDesign from '#expo/vector-icons/AntDesign'
import Ionicons from '#expo/vector-icons/Ionicons'
import { ListItem, Avatar, Badge } from "react-native-elements";
import firebase from 'firebase/compat/app';
import 'firebase/compat/firestore'
import 'firebase/compat/auth'
import theme from "../Props/theme";
import Constants from "expo-constants";
export default class Pending extends Component {
constructor() {
super();
this.state = {
patients: [],
};
this.patient = null;
}
componentDidMount = async () => {
this.patient = await firebase
.firestore()
.collection(firebase.auth().currentUser.email)
.where("doctorEmail", "==", auth.currentUser.email)
.where("allVisitsCompleted", "==", false)
.onSnapshot((snapshot) => {
var docData = snapshot.docs.map((document) => document.data());
this.setState({
patients: docData,
});
});
};
render() {
return (
<View style={{ flex: 1, backgroundColor: "#FFF" }}>
<StatusBar hidden />
{this.state.patients.length !== 0 ? (
<View>
<FlatList
data={this.state.patients}
style={{ marginTop: 20 }}
renderItem={({ item }) => (
<ListItem>
<ListItem.Content
style={{
backgroundColor: "#f0f0f0",
padding: 20,
borderRadius: 20,
}}
>
<View style={{ flexDirection: "row" }}>
<View>
<Avatar
rounded
icon={{ name: "user", type: "font-awesome" }}
activeOpacity={0.7}
source={{
uri: "https://s3.amazonaws.com/uifaces/faces/twitter/adhamdannaway/128.jpg",
}}
/>
<Badge
containerStyle={{
position: "absolute",
top: -1,
right: -3,
}}
badgeStyle={{
width: 15,
height: 15,
borderRadius: 7.5,
backgroundColor: theme.darkPink,
}}
/>
</View>
<View style={{ flexDirection: "column", marginLeft: 20 }}>
<ListItem.Title>{item.patientName}</ListItem.Title>
<ListItem.Subtitle>{item.patientId}</ListItem.Subtitle>
</View>
</View>
</ListItem.Content>
</ListItem>
)}
keyExtractor={(item, index) => index.toString()}
/>
</View>
) : (
<View>
<Text
style={{
marginTop: Constants.statusBarHeight + 250,
fontSize: 35,
fontWeight: "200",
alignSelf: "center",
}}
>
No patients found
</Text>
<View style={{ marginVertical: 48, alignItems: "center" }}>
<TouchableOpacity
style={{
borderWidth: 2,
borderColor: theme.blue,
borderRadius: 4,
padding: 15,
alignItems: "center",
justifyContent: "center",
}}
onPress={() => this.props.navigation.navigate("Add")}
>
<AntDesign name="plus" size={16} color={theme.darkBlue} />
</TouchableOpacity>
<Text
style={{
color: theme.darkBlue,
fontWeight: "600",
fontSize: 14,
marginTop: 8,
}}
>
Add patient
</Text>
</View>
</View>
)}
</View>
);
}
}
Any ideas on how to solve this? Thanks in advance!
This is related to Expo, it's a known issue.
You will either have to load the font manually, see this.
Or use a library for your icons, VectorIcons has all fontawesome icons.
I just wanna know how can I make search function in react native. I have a very big list of text(in local js file) and also Text input space. I want to make possible when users type something they can find what they looking for from list below. Here is my code and screenshot of App. I'm new in programming so please use easy terms =) app screenshot
project datebase sample
import React from 'react';
import { SafeAreaView, View, FlatList, StyleSheet, Text, StatusBar, TextInput } from 'react-native';
import {DATA} from "../Data/AbrData";
const Item = ({ title }) => (
<View style={styles.item}>
<Text style={styles.title}>{title}</Text>
</View>
);
const SearchScreen = ({navigator}) => {
const renderItem = ({ item }) => (
<Item title={item.title} />
);
return (
<SafeAreaView style={styles.container}>
<TextInput
style={{
height: 50,
borderColor: '#919191',
borderWidth: 1,
margin: 10,
paddingLeft: 15,
borderRadius:10
}}
placeholder="Axtaris..."
/>
<FlatList
data={DATA}
renderItem={renderItem}
keyExtractor={item => item.id}
/>
</SafeAreaView>
);
}
const styles = StyleSheet.create({
container: {
flex: 1,
marginTop: StatusBar.currentHeight || 0,
marginBottom:75,
},
item: {
backgroundColor: '#ededed',
padding: 20,
marginVertical: 2,
marginHorizontal: 10,
borderRadius: 20,
},
title: {
fontSize: 20,
},
});
export default SearchScreen;
Really Fast this is what I came up with.
import React, {useState, useEffect} from 'react';
import {
SafeAreaView,
StatusBar,
StyleSheet,
Text,
View,
FlatList,
TextInput,
} from 'react-native';
const App = () => {
const DATA = [{title: 'lorumn ispum'}, {title: 'lorumn ispum'}];
const [searchText, onChangeSearch] = useState('');
const [filteredData, setFilteredData] = useState([]);
useEffect(() => {
const filtered = DATA.filter(item =>
item.title.toLowerCase().includes(searchText.toLowerCase()),
);
if (searchText === '') {
return setFilteredData(DATA);
}
setFilteredData(filtered);
}, [searchText]);
const Item = ({title}) => (
<View style={styles.item}>
<Text style={styles.title}>{title}</Text>
</View>
);
const renderItem = ({item}) => <Item title={item.title} />;
return (
<SafeAreaView style={styles.container}>
<TextInput
style={{
height: 50,
borderColor: '#919191',
borderWidth: 1,
margin: 10,
paddingLeft: 15,
borderRadius: 10,
}}
onChangeText={newText => onChangeSearch(newText)}
placeholder="Axtaris..."
/>
<FlatList
data={filteredData}
renderItem={renderItem}
keyExtractor={(item, index) => item.key}
/>
</SafeAreaView>
);
};
const styles = StyleSheet.create({
container: {
flex: 1,
marginTop: StatusBar.currentHeight || 0,
marginBottom: 75,
},
item: {
backgroundColor: '#ededed',
padding: 20,
marginVertical: 2,
marginHorizontal: 10,
borderRadius: 20,
},
title: {
fontSize: 20,
},
});
export default App;
I suggest watching this video! I learned how to simply filter a list from this video. Its plain js but the idea is the same.
https://www.youtube.com/watch?v=TlP5WIxVirU&ab_channel=WebDevSimplified
If you look at the repo of that video it boils down to the following:
searchInput.addEventListener("input", e => {
const value = e.target.value.toLowerCase()
users.forEach(user => {
const isVisible =
user.name.toLowerCase().includes(value) ||
user.email.toLowerCase().includes(value)
user.element.classList.toggle("hide", !isVisible)
})
})
Everytime the input changes (someone type something in the search field), the event listener is fired and converts the fields to lower case and compares it to the value your looking for. If the text contains the value it unhides it from the list. it does this for every entry in your dataset and thus filters the dataset to what you are looking for.
I am trying to achieve two column layout if i click something inside tab (for example list of Chats) chat should show in right, now its appears inside left column
can you point me to correct way?
if someone needs this is how I make this
/* eslint-disable react-native/no-inline-styles */
import * as React from 'react';
import {Button, Text, View} from 'react-native';
import {NavigationContainer} from '#react-navigation/native';
import {createStackNavigator} from '#react-navigation/stack';
import {createBottomTabNavigator} from '#react-navigation/bottom-tabs';
function ContactScreen({route}) {
const {contactId} = route.params;
return (
<View style={{flexDirection: 'row', flex: 1}}>
<Tab.Navigator
initialRouteName="Contacts"
style={{flex: 1}}>
<Tab.Screen name="Chats" component={ChatsTab} />
<Tab.Screen name="Contacts" component={ContactsTab} />
</Tab.Navigator>
<View style={{flex: 1, justifyContent: 'center', alignItems: 'center'}}>
<Text>Contact {contactId}</Text>
</View>
</View>
);
}
function ChatScreen({route}) {
const {chatId} = route.params;
return (
<View style={{flexDirection: 'row', flex: 1}}>
<Tab.Navigator
initialRouteName="Chats"
style={{flex: 1}}>
<Tab.Screen name="Chats" component={ChatsTab} />
<Tab.Screen name="Contacts" component={ContactsTab} />
</Tab.Navigator>
<View style={{flex: 1, justifyContent: 'center', alignItems: 'center'}}>
<Text>Chat {chatId}</Text>
</View>
</View>
);
}
function ChatsTab({navigation}) {
return (
<View style={{flex: 1, justifyContent: 'center', alignItems: 'center'}}>
<Text>chats tab</Text>
<Button
title="open chat 1"
onPress={() =>
navigation.navigate('Chat', {
screen: 'Chats',
chatId: 1,
})
}
/>
<Button
title="open chat 2"
onPress={() =>
navigation.navigate('Chat', {
screen: 'Chats',
chatId: 2,
})
}
/>
<Button
title="open chat 5"
onPress={() =>
navigation.navigate('Chat', {
screen: 'Chats',
chatId: 5,
})
}
/>
</View>
);
}
function ContactsTab({navigation}) {
return (
<View style={{flex: 1, justifyContent: 'center', alignItems: 'center'}}>
<Text>contacts tab</Text>
<Button
title="open contact 4"
onPress={() =>
navigation.navigate('Contact', {
screen: 'Contacts',
contactId: 4,
})
}
/>
<Button
title="open contact 3"
onPress={() =>
navigation.navigate('Contact', {
screen: 'Contacts',
contactId: 3,
})
}
/>
</View>
);
}
const HomeStack = createStackNavigator();
const Tab = createBottomTabNavigator();
export default function App() {
return (
<NavigationContainer>
<HomeStack.Navigator screenOptions={{headerShown: false}}>
<HomeStack.Screen
initialParams={{chatId: 0}}
name="Chat"
options={{animationEnabled: false}}
component={ChatScreen}
/>
<HomeStack.Screen
initialParams={{contactId: 0}}
options={{animationEnabled: false}}
name="Contact"
component={ContactScreen}
/>
</HomeStack.Navigator>
</NavigationContainer>
);
}
I coded an app that will create a modal that gives the option to alert reception that a customer is coming. However, when running the app on two phones, all changes are local. Why is that? I want to be able to "Alert Reception" and have reception receive a notification of the customer and be able to click More Info and see all the details about it.
We scan a customer QR code, and allow the security guard to validate and then alert reception and send the info to them.
Any ideas? We are using AWS and React Native. I would like to alert everyone and then be able to have the reception see the customer is coming and get the info.
import { StyleSheet, Text, View, Image, Button, Modal, Platform, ScrollView } from 'react-native';
import { BarCodeScanner } from 'expo-barcode-scanner';
import Constants from 'expo-constants';
import * as Notifications from 'expo-notifications';
import { Audio, Video } from 'expo-av';
//For push notifications
Notifications.setNotificationHandler({
handleNotification: async () => ({
shouldShowAlert: true,
shouldPlaySound: true,
shouldSetBadge: false,
}),
});
export default function App() {
//QR Scanner
const [hasPermission, setHasPermission] = useState(null);
const [scanned, setScanned] = useState(false);
const [newData, setNewData] = useState('');
//Modal Views
const [homeScreenVisible, setHomeScreenVisible] = useState(true);
const [customerModalVisible, setCustomerModalVisible] = useState(false);
const [customerModalDetailedVisible, setCustomerModalDetailedVisible] = useState(false);
const [qrScannerVisible, setQRScannerVisible] = useState(false);
//Push notifications
const [expoPushToken, setExpoPushToken] = useState('');
const [notification, setNotification] = useState(false);
const notificationListener = useRef();
const responseListener = useRef();
//useEffects are rendered upon app start. We use the [] to make sure they are only rendered once. If you want them to update, add in the array / state var and upon update the useEffect will run again.
//For Bar Code Scanner
useEffect(() => {
(async () => {
const { status } = await BarCodeScanner.requestPermissionsAsync();
setHasPermission(status === 'granted');
})();
}, []);
//For Push Notifications
useEffect(() => {
registerForPushNotificationsAsync().then(token => setExpoPushToken(token));
// This listener is fired whenever a notification is received while the app is foregrounded
notificationListener.current = Notifications.addNotificationReceivedListener(notification => {
setNotification(notification);
});
// This listener is fired whenever a user taps on or interacts with a notification (works when app is foregrounded, backgrounded, or killed)
responseListener.current = Notifications.addNotificationResponseReceivedListener(response => {
console.log(response);
console.log('Someone clicked on the push notification')
});
return () => {
Notifications.removeNotificationSubscription(notificationListener.current);
Notifications.removeNotificationSubscription(responseListener.current);
};
}, []);
//Bar Code scanner function, reads the data (which is a aws s3 endpoint served through cloudfront), then I run a fetch on the url (aka data), and then turn the string response into a json. Then I set newData equal to the JSON object via React Hooks. Then I turn the QR scanner visible off, and then open the customer modal.
const handleBarCodeScanned = ({ type, data }) => {
setScanned(true);
console.log(data) // Should be the url JSON endpoint
fetch(data)
.then(response => response.json())
.then(response => {
console.log(response)
setNewData(response)
});
setQRScannerVisible(false);
setCustomerModalVisible(true);
// const playbackObject = new Audio.Sound();
};
if (hasPermission === null) {
return <Text>Requesting for camera permission</Text>;
}
if (hasPermission === false) {
return <Text>No access to camera</Text>;
}
// We are returning a View with multiple JS {} fragments that turn off and on depending on state. There is an issue with setScanned(false) that sometimes the scanner is not set to false and it will not rescan. If you run into that problem, try adding setScanned(false).
return (
<ScrollView style={{flex: 1, backgroundColor: 'black'}}>
<View id="view" style={styles.container}>
{homeScreenVisible &&
<>
<Image
source={{
uri: "https://d1s68zh8fdz4eb.cloudfront.net/logo.png"
}}
style={{
height: 500,
width: '100%',
// borderWidth: 5,
// borderColor: '#fff',
marginTop: 30,
marginBottom: 20
}}
/>
<Button title="Scan QR Code" style={styles.moreInfo} onPress={() => {
setScanned(false)
setHomeScreenVisible(false)
setQRScannerVisible(true)
}} />
</>
}
{qrScannerVisible &&
<>
<Image
source={{
uri: "https://d1s68zh8fdz4eb.cloudfront.net/logo.png"
}}
style={{
height: 100,
width: 100,
borderWidth: 5,
marginBottom: 60
}}
/>
<BarCodeScanner
onBarCodeScanned={scanned ? undefined : handleBarCodeScanned}
// style={StyleSheet.absoluteFillObject}
style={{width: 300, height: 300, borderWidth: 5, borderColor: '#fff'}}
//If you want to switch to a absolute fill object, add the target area on the screen for scanning and try to add a sound.
// If you want to use the front facing or rear facing, include type={'front'} or put 'back'
/>
<Text style={{color: '#fff', fontSize: 30, marginTop: 30, marginBottom: 30}}>Scan QR Code</Text>
<Button title="Home" onPress={() => {
setHomeScreenVisible(true)
setQRScannerVisible(false)
setScanned(false)
}} />
</>
}
{/* Used for re scanning things. It is commented out because someoen can always go back to home and rescan. However, if you want to reintroduce a rescan button, you can do it with the below code.*/}
{/* {scanned && <Button title={'Tap to Scan Again'} onPress={() => {
setScanned(false)
}} />}
*/}
{customerModalVisible &&
<Modal style={styles.modal}>
<View style={styles.modalView}>
<Image
source={{
uri: "https://d1s68zh8fdz4eb.cloudfront.net/logo.png"
}}
style={{
height: 100,
width: 100,
borderWidth: 5,
marginBottom: 60
}}
/>
<View style={styles.modalInside}>
<Image
style={{
height: 300,
width: 300,
marginBottom: 20,
borderWidth: 5,
borderColor: 'gold'
}}
source={{
uri: newData.photo,
}}
/>
<Text style={styles.modalTextName}>{newData.name}</Text>
<Text style={styles.modalTextSecondary}>Favorite Drink: {newData.favoriteDrink}</Text>
<Text style={styles.modalTextSecondary}>Lead Contact: Leah</Text>
</View>
<Button title="Alert Reception" style={styles.closeButton} onPress={async () => {
await sendPushNotification(expoPushToken);
alert('Reception has been notified.')
}} />
<Button title="More Info" style={styles.moreInfo} onPress={() => {
// PushCustomerStatus();
setCustomerModalDetailedVisible(true)
setCustomerModalVisible(false)
setScanned(false)
setQRScannerVisible(false)
// Add modal # 2 or page navigation here
}} />
<Button title="Close" style={styles.closeButton} onPress={() => {
setHomeScreenVisible(true)
setCustomerModalVisible(false)
setScanned(false)
setQRScannerVisible(false)
}} />
</View>
</Modal>}
{customerModalDetailedVisible &&
<>
<Image
source={{
uri: "https://d1s68zh8fdz4eb.cloudfront.net/logo.png"
}}
style={{
height: 100,
width: 100,
// borderWidth: 5,
// borderColor: '#fff'
}}
/>
<View
style={{
flex: 1,
alignItems: 'center',
justifyContent: 'space-around',
width: '95%',
borderWidth: 5,
borderColor: 'gold',
}}>
{/* <Text>Your expo push token: {expoPushToken}</Text> */}
<View style={{ alignItems: 'flex-start', justifyContent: 'center', backgroundColor: '#fff', flex: 1, width: '100%', padding: 15}}>
<Image
style={{
height: 300,
width: 300,
marginBottom: 20,
// borderWidth: 5,
// borderColor: 'gold'
}}
source={{
uri: newData.photo,
}}
/>
<Text>Customer: {newData.name}</Text>
<Text>Arm Length: {newData.armLength}</Text>
<Text>Address: {newData.address}</Text>
<Text>Phone: {newData.phone}</Text>
<Text>Email: {newData.email}</Text>
<Text>Favorite Drink: {newData.favoriteDrink}</Text>
<Text>Height: {newData.height}</Text>
<Text>Inseam: {newData.inseam}</Text>
<Text>Neck Length: {newData.neckLength}</Text>
<Text>Customer: {newData.name}</Text>
<Text>Arm Length: {newData.armLength}</Text>
<Text>Address: {newData.address}</Text>
<Text>Phone: {newData.phone}</Text>
<Text>Email: {newData.email}</Text>
<Text>Favorite Drink: {newData.favoriteDrink}</Text>
<Text>Height: {newData.height}</Text>
<Text>Inseam: {newData.inseam}</Text>
<Text>Neck Length: {newData.neckLength}</Text>
<Text>Customer: {newData.name}</Text>
<Text>Arm Length: {newData.armLength}</Text>
<Text>Address: {newData.address}</Text>
<Text>Phone: {newData.phone}</Text>
<Text>Email: {newData.email}</Text>
<Text>Favorite Drink: {newData.favoriteDrink}</Text>
<Text>Height: {newData.height}</Text>
<Text>Inseam: {newData.inseam}</Text>
<Text>Neck Length: {newData.neckLength}</Text>
<Text>Customer: {newData.name}</Text>
<Text>Arm Length: {newData.armLength}</Text>
<Text>Address: {newData.address}</Text>
<Text>Phone: {newData.phone}</Text>
<Text>Email: {newData.email}</Text>
<Text>Favorite Drink: {newData.favoriteDrink}</Text>
<Text>Height: {newData.height}</Text>
<Text>Inseam: {newData.inseam}</Text>
<Text>Neck Length: {newData.neckLength}</Text>
{/* I can return it as an object above and use dot notation or do something similar below but use a string */}
{/* <Text>Data: {notification && JSON.stringify(notification.request.content.data)}</Text> */}
<Button
title="Press to Send Notification"
onPress={async () => {
await sendPushNotification(expoPushToken);
}}
/>
<Button
title="Home"
onPress={() => {
setHomeScreenVisible(true)
setScanned(false)
setCustomerModalDetailedVisible(false)
setQRScannerVisible(false)
}}
/>
</View>
</View>
</>
}
</View>
</ScrollView>
);
}
// Can use this function below, OR use Expo's Push Notification Tool-> https://expo.io/notifications
async function sendPushNotification(expoPushToken) {
const message = {
to: expoPushToken,
sound: 'default',
title: 'Customer Arriving!',
body: 'Please greet them at the door.',
};
await fetch('https://exp.host/--/api/v2/push/send', {
method: 'POST',
headers: {
Accept: 'application/json',
'Accept-encoding': 'gzip, deflate',
'Content-Type': 'application/json',
},
body: JSON.stringify(message),
});
}
async function registerForPushNotificationsAsync() {
let token;
if (Constants.isDevice) {
const { status: existingStatus } = await Notifications.getPermissionsAsync();
let finalStatus = existingStatus;
if (existingStatus !== 'granted') {
const { status } = await Notifications.requestPermissionsAsync();
finalStatus = status;
}
if (finalStatus !== 'granted') {
alert('Failed to get push token for push notification!');
return;
}
token = (await Notifications.getExpoPushTokenAsync()).data;
console.log(token);
} else {
alert('Must use physical device for Push Notifications');
}
if (Platform.OS === 'android') {
Notifications.setNotificationChannelAsync('default', {
name: 'default',
importance: Notifications.AndroidImportance.MAX,
vibrationPattern: [0, 250, 250, 250],
lightColor: '#FF231F7C',
});
}
return token;
}
const styles = StyleSheet.create({
container: {
flex: 1,
flexDirection: 'column',
justifyContent: 'flex-start',
alignItems: 'center',
backgroundColor: 'black',
paddingTop: 60,
},
modal: {
// marginTop: 100,
},
modalView: {
flex: 1,
justifyContent: 'center',
alignItems: 'center',
backgroundColor: 'black'
},
modalInside: {
justifyContent: 'space-between',
alignItems: 'center',
marginBottom: 20
},
modalTextName: {
fontSize: 20,
fontWeight: 'bold',
marginBottom: 5,
color: 'white'
},
modalTextSecondary: {
color: '#fff',
marginBottom: 5,
},
closeButton: {
marginTop: 100,
},
moreInfo: {
marginTop: 100,
}
});
By live alerts, I assume you mean text notifications. One way to push out text notifications using AWS is using the Simple Notification Service. Because you are using a React app, use the AWS SDK for JavaScript. Using the SDK, you can create app logic to fire off text notifications in response to certain events.
You can find examples here:
https://github.com/awsdocs/aws-doc-sdk-examples/tree/master/javascriptv3/example_code/sns/src
In my react-native app I'm returning data from an api, everything is working except for my layout it got messed up, i have an albums list and i need to display each 2 albums next to each other, but all of them are getting displayed under each other, here is my code:
Album detail:
const AlbumDetails= (props) => {
return(
<Album>
<Image source={{ uri: props.album.thumbnail_image }}/>
<Text>{props.album.title}</Text>
</Album>
);
};
export default AlbumDetails;
Album:
const Album= (props) => {
return(
<View style={{flex: 1}}>
<View style={{display: "flex", flexDirection: 'row', justifyContent: 'space-between', alignItems: 'center'}}>
<View style={styles.albumContainer}>
<View>{props.children}</View>
</View>
</View>
</View>
);
};
const styles = StyleSheet.create({
albumContainer: {
backgroundColor: 'red',
width: '50%',
height: 180,
display: 'flex',
alignItems: 'center',
justifyContent: 'center',
marginBottom: 20,
flexDirection: 'column'
},
});
export default Album;
I suggest to use FlatList component with numColumns param equal 2. Check Expo Snack or code below.
export default class App extends React.Component {
render() {
return (
<View style={styles.container}>
<FlatList
style={{ margin: 5 }}
data={data}
numColumns={2}
keyExtractor={(item, index) => item.id}
renderItem={dataItem => (
<AlbumDetails
album={{
title: dataItem.item.title,
thumbnail_image: dataItem.item.image,
}}
/>
)}
/>
</View>
);
}
}