I'm buiding an application that receives foreign exchange currency pairs e.g EURUSD with their respective prices e.g EURUSD AskPrice: 0.90345 BidPrice: 0.90365 . The user of the application is supposed to set the price in a textInput at which they would like to be alerted once that price is reached. I have tried creating a function for this but it logs the input price immediately instead of checking the condition first and then waiting for the condition to be met first before logging. Below is the Code:
//Datafetching
import React, {createContext, useState, useEffect}from 'react'
import {ActivityIndicator} from 'react-native'
import axios from '../utils/axios'
const CurrencyContext = createContext();
const CurrencyProvider =(props) => {
const [data, setData] = useState([])
const [isLoading, setIsloading] = useState(true)
useEffect(() => {
const interval = setInterval(() => {
const fetchpairs = async() => {
const results = await axios.get('/v3/accounts/101-004-14328428-002/pricing?instruments=AUD_CAD%2CAUD_CHF%2CAUD_JPY%2CAUD_NZD%2CAUD_USD%2CCAD_CHF%2CCAD_JPY%2CCHF_JPY%2CEUR_AUD%2CEUR_CAD%2CEUR_CHF%2CEUR_GBP%2CEUR_NOK%2CEUR_NZD%2CEUR_USD%2CGBP_AUD%2CGBP_CAD%2CGBP_CHF%2CGBP_USD%2CGBP_JPY%2CNZD_CAD%2CNZD_CHF%2CNZD_JPY%2CUSD_CAD%2CUSD_JPY%2CUSD_CHF%2CUSD_ZAR%2CUSD_MXN')
setData(results.data)
setIsloading(false)
}
fetchpairs()
},1000)
}, []);
if(isLoading) {
return (
<ActivityIndicator size="large"/>
)
}else
return (
<CurrencyContext.Provider
value={{
data,
setData,
isLoading,
setIsloading
}}>
{props.children}
</CurrencyContext.Provider>
)
}
export {CurrencyProvider, CurrencyContext}
//HomeScreen
import React, {useContext, useState, useEffect} from 'react'
import { Text, View, ScrollView, TouchableOpacity, Modal, TextInput, ToastAndroid, Picker, Alert } from 'react-native'
import {ListItem, Card, Button, Icon} from 'react-native-elements'
import {ActionSheet} from 'native-base'
//import CurrencyPair from '../../CurrencyPair'
import {firebase} from '../../../firebase/config'
import {CurrencyContext} from '../../../context/Context'
import styles from '../HomeScreen/styles'
function HomeScreen({navigation, props}) {
const currency = useContext(CurrencyContext);
//hook for the modal
const [modalopen, setModalOpen] = useState(false)
//hook for the clicked currency pair
const [clickedindex, setClickedIndex] = useState(0)
//hook for the actionsheet
const[sheet, setSheet] = useState(null)
//Hooks for the alert
const [pricealert, setPricealert] = useState('')
//function for checking alert condition
const checkAlertCondition = (pricealert) => {
if(pricealert >= {...currency.data.prices[clickedindex].closeoutAsk} ){
setPricealert(pricealert)
console.log("Price" + pricealert + "has been hit")
}
else if(pricealert <= {...currency.data.prices[clickedindex].closeoutAsk})
{
setPricealert(pricealert)
console.log("Price" + pricealert + "has been hit")
}
else
{
console.log("Set your alert price")
}
}
//toast method that will be called when the ok button is called
const showToastWithGravityAndOffset = () => {
ToastAndroid.showWithGravityAndOffset(
"Alert created successfully",
ToastAndroid.SHORT,
ToastAndroid.BOTTOM,
25,
50
);
};
const BUTTONS = [
{ text: "SMS", icon: "chatboxes", iconColor: "#2c8ef4" },
{ text: "Email", icon: "analytics", iconColor: "#f42ced" },
{ text: "Push Notification", icon: "aperture", iconColor: "#ea943b" },
{ text: "Delete", icon: "trash", iconColor: "#fa213b" },
{ text: "Cancel", icon: "close", iconColor: "#25de5b" }
];
const DESTRUCTIVE_INDEX = DESTRUCTIVE_INDEX;
const CANCEL_INDEX = CANCEL_INDEX;
return (
<ScrollView>
<Modal
visible={modalopen}
animationType={"fade"}
>
<View style={styles.modal}>
<View>
<Text style={{textAlign: "center", fontWeight: "bold"}}>
{currency.data.prices[clickedindex].instrument}
</Text>
<Text style={{textAlign: "center"}}>
{currency.data.prices[clickedindex].closeoutAsk}/{currency.data.prices[clickedindex].closeoutBid}
</Text>
<Card.Divider/>
<View style={{ flexDirection: "row"}}>
<View style={styles.inputWrap}>
<TextInput
style={styles.textInputStyle}
value={pricealert}
onChangeText = {(pricealert) => setPricealert(pricealert)}
placeholder="Alert Price"
placeholderTextColor="#60605e"
numeric
keyboardType='decimal-pad'
/>
</View>
<View style={styles.inputWrap}>
</View>
</View>
<TouchableOpacity
onPress={() =>
ActionSheet.show(
{
options: BUTTONS,
cancelButtonIndex: CANCEL_INDEX,
destructiveButtonIndex: DESTRUCTIVE_INDEX,
title: "How do you want to receive your notification"
},
buttonIndex => {
setSheet({ clicked: BUTTONS[buttonIndex] });
}
)}
style={styles.button}
>
<Text>ActionSheet</Text>
</TouchableOpacity>
<TouchableOpacity style={styles.button}
onPress={() => {setModalOpen(false); checkAlertCondition(pricealert);showToastWithGravityAndOffset();} }>
<Text style={styles.buttonTitle}>OK</Text>
</TouchableOpacity>
</View>
</View>
</Modal>
<Card>
<Text style={{textAlign: "center"}}>
Welcome
</Text>
<Button title="Sign Out" type="outline" onPress ={() => firebase.auth().signOut()}/>
<Button title="My Alerts" onPress ={() =>navigation.navigate("AlertScreen") }/>
</Card>
<View>
{currency.data.prices && currency.data.prices.map((prices, index) => {
return (
<ListItem
key={index}
onPress = {() => {setModalOpen(true);setClickedIndex(index);}}
bottomDivider>
<ListItem.Content>
<ListItem.Title>
{currency.data.prices[index].instrument} {currency.data.prices[index].closeoutAsk} {currency.data.prices[index].closeoutBid}
</ListItem.Title>
</ListItem.Content>
</ListItem>
)
})
}
</View>
</ScrollView>
)
}
export default HomeScreen

currency.data.prices[clickedindex].closeoutAsk{currency.data.prices[index].closeoutAsk}in the listItem when a modal is opened{...currency.data.prices[clickedindex].closeoutAsk}then why are you trying to deconstruct the decimal number?