116 lines
3.4 KiB
TypeScript
116 lines
3.4 KiB
TypeScript
import React from 'react';
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import { View, Text, TouchableOpacity, StyleSheet } from 'react-native';
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import { Ionicons } from '@expo/vector-icons';
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// Custom tab bar component
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const CustomTabBar = ({ state, descriptors, navigation }) => {
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return (
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<View style={styles.tabBar}>
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{/* Iterate through each route in the state to render tab buttons */}
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{state.routes.map((route, index) => {
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const { options } = descriptors[route.key];
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const label = options.tabBarLabel !== undefined
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? options.tabBarLabel
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: options.title !== undefined
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? options.title
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: route.name;
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// Check if the current route is focused
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const isFocused = state.index === index;
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// Define the onPress behavior for each tab button
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const onPress = () => {
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const event = navigation.emit({
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type: 'tabPress',
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target: route.key,
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});
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if (!isFocused && !event.defaultPrevented) {
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navigation.navigate(route.name);
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}
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};
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// Define the onLongPress behavior for each tab button
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const onLongPress = () => {
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navigation.emit({
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type: 'tabLongPress',
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target: route.key,
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});
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};
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// Determine the icon name based on the route name
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const iconName = route.name === 'QR Scanner' ? 'camera' : route.name === 'History' ? 'time' : route.name === 'Settings' ? 'settings' : 'person';
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return (
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<TouchableOpacity
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key={index}
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accessibilityRole="button"
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accessibilityState={isFocused ? { selected: true } : {}}
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accessibilityLabel={options.tabBarAccessibilityLabel}
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testID={options.tabBarTestID}
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onPress={onPress}
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onLongPress={onLongPress}
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style={styles.tabButton}
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>
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{/* Render the icon and label for each tab */}
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<Ionicons name={iconName} size={24} color={isFocused ? '#673ab7' : '#222'} />
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<Text style={{ color: isFocused ? '#673ab7' : '#222' }}>
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{label}
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</Text>
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</TouchableOpacity>
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);
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})}
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{/* Floating button to navigate directly to QR Scanner */}
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<View style={styles.floatingButton}>
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<TouchableOpacity onPress={() => { navigation.navigate('QR Scanner'); }}>
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<Ionicons name="camera" size={28} color="#fff" />
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</TouchableOpacity>
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</View>
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</View>
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);
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};
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const styles = StyleSheet.create({
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tabBar: {
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position: 'absolute',
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bottom: 20,
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left: 20,
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right: 20,
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height: 70,
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borderRadius: 35,
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backgroundColor: '#fff',
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flexDirection: 'row',
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justifyContent: 'space-around',
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alignItems: 'center',
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shadowColor: '#000',
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shadowOpacity: 0.1,
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shadowOffset: { width: 0, height: 2 },
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shadowRadius: 10,
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elevation: 5,
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},
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tabButton: {
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flex: 1,
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justifyContent: 'center',
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alignItems: 'center',
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},
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floatingButton: {
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position: 'absolute',
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bottom: 30,
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left: '50%',
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marginLeft: -30,
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width: 60,
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height: 60,
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borderRadius: 30,
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backgroundColor: '#673ab7',
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justifyContent: 'center',
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alignItems: 'center',
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shadowColor: '#000',
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shadowOpacity: 0.1,
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shadowOffset: { width: 0, height: 2 },
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shadowRadius: 5,
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elevation: 3,
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},
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});
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export default CustomTabBar;
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