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App.js
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App.js
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'use strict'
import React, { useEffect, useState } from "react";
import {
StyleSheet, SafeAreaView, View, Text,
Image, Pressable, TouchableOpacity, Platform,
StatusBar
} from "react-native";
import Torch from "react-native-torch";
import RNShake from "react-native-shake";
import img_light_on from "./assets/icons/eco-light.png";
import img_light_off from "./assets/icons/eco-light-off.png";
const App = () => {
const [lightOn, setLightOn] = useState(false)
const safeAreaStyles = [styles.container, lightOn ? styles.containerToLight : null]
const textStyles = [styles.text, { textAlign: "center" }, !lightOn ? { color: "lightgray" } : null]
const buttonStyles = [styles.text, styles.textButton, lightOn ? styles.textButtonOff : null]
const toggleLight = () => {
setLightOn(state => !state)
}
useEffect(() => {
Torch.switchState(lightOn)
// console.log("LOG: lightOn = " + lightOn)
}, [lightOn])
useEffect(() => {
const subsc = RNShake.addListener(() => {
toggleLight()
})
return () => subsc.remove()
})
return <SafeAreaView style={safeAreaStyles}>
<StatusBar backgroundColor={'pink'} barStyle="dark-content" hidden={false} />
<View>
<Text style={[textStyles, {fontSize: 26}]}>
Bem vinde!
</Text>
<Text style={textStyles}>
Chacoalhe o celular ou toque na lâmpada para {lightOn ? "apagar" : "acender"}.
</Text>
<TouchableOpacity onPress={toggleLight}>
<Image
source={lightOn ? img_light_on : img_light_off}
style={[
styles.img,
!lightOn ? styles.imgLightOff : null,
{
minHeight: 50,
minWidth: 50,
marginVertical: 30,
height: 180,
width: 180
}
]}
/>
</TouchableOpacity>
<Pressable onPress={toggleLight}>
<Text style={buttonStyles}>
{lightOn ? "Apagar" : "Acender"}
</Text>
</Pressable>
</View>
</SafeAreaView>
}
const backColorDark = '#181818'
const backColorLight = '#fbfbfb'
const foreColorDark = 'lightgray'
const foreColorLight = 'black'
const styles = StyleSheet.create({
container: {
flex: 1,
backgroundColor: backColorDark, //'#fff',
alignItems: 'center',
justifyContent: 'center'
},
containerToLight: {
backgroundColor: backColorLight
},
img: {
resizeMode: "contain",
alignSelf: "center",
padding: 10
},
imgLightOff: {
tintColor: foreColorDark
},
text: {
fontSize: 24,
fontFamily: "monospace",
fontWeight: "bold",
color: foreColorLight,
marginVertical: 10,
alignSelf: "center",
maxWidth: 300
},
textButton: {
fontSize: 20,
fontWeight: "normal",
padding: 10,
borderRadius: 25,
backgroundColor: foreColorDark,
marginVertical: 10,
marginHorizontal: 20,
textAlign: "center"
},
textButtonOff: {
backgroundColor: backColorDark,
color: backColorLight
},
textButtonPress: {
fontWeight: "bold",
borderColor: "green"
}
});
export default App;