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SensorView.js
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SensorView.js
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import React, {useState, useEffect} from 'react';
import {StyleSheet, Text, View} from 'react-native';
import * as Sensors from 'react-native-sensors';
import NAME_TO_KEY from './data/name2key.json';
const Value = ({name, value}) => (
<View style={styles.valueContainer}>
<Text style={styles.valueName}>{name}:</Text>
<Text style={styles.valueValue}>{value.toString().substr(0, 8)}</Text>
</View>
);
const SensorView = ({sensorName, values, updateSensorValues}) => {
const sensor$ = Sensors[sensorName];
const initialValue =
values && values.reduce((carry, val) => ({...carry, [val]: 0}), {});
// console.log(initialValue);
const [sensorValue, setSensorValue] = useState(initialValue);
const [subscription, setSubscription] = useState(null);
useEffect(() => {
const _subscription = sensor$.subscribe(values => {
setSensorValue({...values});
});
setSubscription(_subscription);
return () => {
_subscription.unsubscribe();
setSubscription(null);
};
}, []);
useEffect(() => {
values.map(valueName => {
// console.log(NAME_TO_KEY[sensorName + valueName], sensorValue[valueName]);
updateSensorValues(
NAME_TO_KEY[sensorName + valueName],
sensorValue[valueName],
);
});
}, [sensorValue]);
return (
<View style={styles.container}>
<Text style={styles.headline}>{sensorName} values</Text>
{values.map(valueName => {
// console.log(sensorName + valueName);
return (
<Value
key={sensorName + valueName}
name={valueName}
value={sensorValue[valueName]}
/>
);
})}
</View>
);
};
const styles = StyleSheet.create({
title: {
fontSize: 50,
textAlign: 'center',
margin: 10,
fontWeight: 'bold',
marginTop: 250,
},
container: {
flex: 1,
justifyContent: 'center',
alignItems: 'center',
backgroundColor: '#FFFFFF',
marginTop: 20,
},
headline: {
fontSize: 20,
textAlign: 'left',
margin: 10,
},
valueContainer: {
flexDirection: 'row',
flexWrap: 'wrap',
},
valueValue: {
width: 200,
fontSize: 20,
},
valueName: {
marginLeft: -20,
width: 90,
fontSize: 20,
// fontWeight: "bold",
},
instructions: {
textAlign: 'center',
color: '#333333',
marginBottom: 5,
},
});
export default SensorView;