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App.js
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App.js
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import * as React from 'react';
import { NavigationContainer } from '@react-navigation/native';
import { createNativeStackNavigator } from '@react-navigation/native-stack';
import { StyleSheet, Button, View, SafeAreaView, Text, Alert , TouchableOpacity, Linking, TextInput, useState} from 'react-native';
import { createBottomTabNavigator } from '@react-navigation/bottom-tabs';
import QRCode from 'react-native-qrcode-svg';
import QRCodeScanner from 'react-native-qrcode-scanner';
import { RNCamera } from 'react-native-camera';
import Modal from 'react-native-modal';
import QRForm from './screens/QREditorModal';
import QROutput from './screens/QROutput';
import AsyncStorage from '@react-native-community/async-storage';
const Tab = createBottomTabNavigator();
const App = () => {
return (
<NavigationContainer>
<Tab.Navigator>
<Tab.Screen name="Scan" component={Scanner} options={{tabBarShowLabel: true}} />
<Tab.Screen name="Show" component={ShowQR} />
</Tab.Navigator>
</NavigationContainer>
);
};
//scanner homescreen
const Scanner = ({ navigation }) => {
const [isModalVisible, setIsModalVisible] = React.useState(false);
return (
<View>
<ScanScreen />
</View>
);
};
//show qr code
const ShowQR = ({ navigation }) => {
const [isModalVisible, setIsModalVisible] = React.useState(false);
const [userInfo, setUserInfo] = React.useState({'name': '', 'instagram': '', 'snapchat': '', 'phone': '', 'note': ''})
const toggleModal = () => {
setIsModalVisible(!isModalVisible);
};
React.useEffect(() => {
// Some initialization logic here
updateUserInfo()
}, []);
const updateUserInfo = async () => {
console.log('updateUserInfo')
let name = await AsyncStorage.getItem('name');
let instagram = await AsyncStorage.getItem('instagram');
let snapchat = await AsyncStorage.getItem('snapchat');
let phone = await AsyncStorage.getItem('phone');
let note = await AsyncStorage.getItem('note');
setUserInfo({'name': name, 'instagram': instagram, 'snapchat': snapchat, 'phone': phone, 'note': note})
}
const doneFn = () => {
setIsModalVisible(!isModalVisible);
updateUserInfo()
}
const dictToString = (dict) => {
let result = ''
Object.entries(dict).forEach(([key, value]) => {
if (value == null) value = ''
result += (value + '|');
});
if (result.length) {
result = result.substr(0, result.length - 1) // get rid of the last comma
}
return result
}
return (
<View style={{flex: 1, justifyContent: 'center', alignItems: 'center'}}>
<QRCode
value={dictToString(userInfo)}
size={300}
style={{flex: 1}}
/>
<Button title="Click here to change" onPress={toggleModal} />
<Modal
isVisible={isModalVisible} style={{flex: 1}}>
<View>
<QRForm />
<View>
<Button title="Done" onPress={doneFn} />
</View>
</View>
</Modal>
</View>
);
};
//QR SCANNER COMPONENT
const ScanScreen = () => {
const [successDict, setSuccessDict] = React.useState({});
const [isModalVisible, setIsModalVisible] = React.useState(false);
const toggleModal = () => {
if (isModalVisible) {
// dismissing, should reactivate scanner
this.scanner.reactivate()
}
setIsModalVisible(!isModalVisible);
};
const stringToDict = (str) => {
let labels = ['name', 'instagram', 'snapchat', 'phone', 'note']
let result = {}
let splitted = str.split('|')
for(let i = 0; i < splitted.length; i++) {
result[labels[i]] = splitted[i]
}
return result
}
const onSuccess = async e => {
// convert string to dictionary and show modal
console.log(e.data)
setSuccessDict(stringToDict(e.data))
toggleModal();
};
return (
<View >
<View style={{justifyContent: 'center', margin: "7%"}}>
<Text style={[styles.centerText, styles.textBold]}>
Scan a QuiConnect QR code!
</Text>
</View>
<QRCodeScanner onRead={onSuccess}
flashMode={RNCamera.Constants.FlashMode.off}
ref={(node) => { this.scanner = node }}
/>
<View>
<Text style={[styles.bottomScanText, styles.centerText, styles.textBold]}>
Ask your friend to open QuiConnect and show their QR code.
</Text>
</View>
<Modal isVisible={isModalVisible}>
<View>
<QROutput dict={successDict} />
<View>
<Button title="Done" onPress={toggleModal} style={{fontWeight: "bold"}}/>
</View>
</View>
</Modal>
</View>
);
}
const styles = StyleSheet.create({
centerText: {
// flex: 1,
textAlign: "center",
fontSize: 20,
padding: 30,
// color: '#777',
color: 'black'
},
textBold: {
fontWeight: '500',
color: '#000'
},
buttonText: {
fontSize: 21,
color: 'rgb(0,122,255)'
},
buttonTouchable: {
padding: 16
},
bottomScanText: {
marginBottom: "3%",
textAlign: "center",
fontSize: 20,
padding: 30,
}
});
export default App;