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App.tsx
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App.tsx
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import React, { Component } from 'react'
import {
Platform,
StyleSheet,
TouchableOpacity,
Text,
FlatList,
RefreshControl,
View
} from 'react-native'
import { SafeAreaProvider } from 'react-native-safe-area-context';
import SafeAreaView from 'react-native-safe-area-view';
import { ListItem } from 'react-native-elements'
import Zeroconf from 'react-native-zeroconf'
const zeroconf = new Zeroconf()
export default class App extends Component {
state = {
isScanning: false,
selectedService: null,
services: {},
}
componentDidMount() {
this.refreshData()
zeroconf.on('start', () => {
this.setState({ isScanning: true })
console.log('[Start]')
})
zeroconf.on('stop', () => {
this.setState({ isScanning: false })
console.log('[Stop]')
})
zeroconf.on('resolved', service => {
console.log('[Resolve]', JSON.stringify(service, null, 2))
this.setState({
services: {
...this.state.services,
[service.host]: service,
},
})
})
zeroconf.on('error', err => {
this.setState({ isScanning: false })
console.log('[Error]', err)
})
}
renderRow = ({ item, index }) => {
const { name, fullName, host } = this.state.services[item]
return (
<TouchableOpacity
onPress={() =>
this.setState({
selectedService: host,
})}
>
<ListItem.Content>
<ListItem.Title>{name}</ListItem.Title>
<ListItem.Subtitle>{fullName}</ListItem.Subtitle>
</ListItem.Content>
</TouchableOpacity>
)
}
refreshData = () => {
const { isScanning } = this.state
if (isScanning) {
return
}
this.setState({ services: [] })
zeroconf.scan('http', 'tcp', 'local.')
clearTimeout(this.timeout)
this.timeout = setTimeout(() => {
zeroconf.stop()
}, 5000)
}
render() {
const { services, selectedService, isScanning } = this.state
console.log(selectedService)
const service = selectedService ? services[selectedService] : null;
if (service) {
return (
<SafeAreaProvider>
<SafeAreaView style={styles.container}>
<TouchableOpacity onPress={() => this.setState({ selectedService: null })}>
<Text style={styles.closeButton}>{'CLOSE'}</Text>
</TouchableOpacity>
<Text style={styles.json}>{JSON.stringify(service, null, 2)}</Text>
</SafeAreaView>
</SafeAreaProvider>
)
}
return (
<SafeAreaProvider>
<SafeAreaView style={styles.container}>
<Text style={styles.state}>{isScanning ? 'Scanning..' : 'Stopped'}</Text>
<FlatList
data={Object.keys(services)}
renderItem={this.renderRow}
keyExtractor={key => key}
refreshControl={
<RefreshControl
refreshing={isScanning}
onRefresh={this.refreshData}
tintColor="skyblue"
/>
}
/>
</SafeAreaView>
</SafeAreaProvider>
)
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
marginLeft: 10
},
closeButton: {
padding: 20,
textAlign: 'center',
},
json: {
padding: 10,
},
state: {
fontSize: 20,
textAlign: 'center',
margin: 30,
},
})