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App.js
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App.js
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/**
* Sample React Native App
* https://github.com/facebook/react-native
*
* @format
* @flow
*/
import React, {Component} from 'react';
import {Platform, StyleSheet, Text, View, Button, ImageBackground} from 'react-native';
import Torch from 'react-native-torch';
const instructions = Platform.select({
ios: 'Press Cmd+R to reload,\n' + 'Cmd+D or shake for dev menu',
android:
'Double tap R on your keyboard to reload,\n' +
'Shake or press menu button for dev menu',
});
type Props = {};
export default class App extends Component<Props> {
state = {
torchStatus: false
}
torchSwitch = () => {
Torch.switchState(!this.state.torchStatus);
console.log(this.state.torchStatus);
this.setState({ torchStatus: !this.state.torchStatus});
}
componentDidMount() {
this.torchSwitch
}
// buttonTitle = () => {
// retrun this.state
// }
render() {
return (
<ImageBackground source={this.state.torchStatus ? require('./assets/torchon.png') : require('./assets/torchoff.png')} style={{width: '100%', height: '100%' }} >
<View style={styles.container}>
<Button onPress={this.torchSwitch} style={{width: '100', height: '100', fontSize: 50}} title={this.state.torchStatus ? "Turn OFF" : "Turn ON"} />
</View>
</ImageBackground>
);
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
justifyContent: 'center',
alignItems: 'center',
fontSize: 50
// backgroundColor: '#F5FCFF',
},
welcome: {
fontSize: 20,
textAlign: 'center',
margin: 10,
},
instructions: {
textAlign: 'center',
color: '#333333',
marginBottom: 5,
},
});