我有一个react native应用模块,用于跟踪健康统计信息。此示例是为了减轻重量,但是在仪表板加载时,会出现一个带有按钮以触发编辑器模式的空组件。这提供了一个textInput,用户可以在其中输入当天的重量,保存后将其保存为该数值的状态,并显示在仪表板上。
这完全符合预期,但我还希望将其与当前日期同时保存在asyncStorage中。如果当前日期与它的存储值匹配,但我希望整天保存,我想为这些值加载状态。
[基本上,如果用户在星期一醒来并记录其体重,我希望它整天显示在应用程序中,但是当他们在星期二打开它时,应该再次为空,以便用户输入当天的值,然后输入THAT值应该在星期二全天等,
为了实现该目标,我需要做什么?
import React, { Component } from 'react';
import { StyleSheet, Text, View, Dimensions, Button, ScrollView, TouchableOpacity, TextInput, Alert} from 'react-native';
import { Pedometer } from "expo-sensors";
import {
LineChart,
BarChart,
PieChart,
ProgressChart,
ContributionGraph,
StackedBarChart
} from "react-native-chart-kit";
import PedometerChart from './PedometerChart';
import Icon from '@expo/vector-icons/Ionicons';
import MatIcon from '@expo/vector-icons/MaterialCommunityIcons';
import NumericInput from 'react-native-numeric-input';
import Modal from 'react-native-modal';
import moment from 'moment';
export default class Dashboard extends Component{
state = {
weight:'',
currentDate: new Date(),
markedDate: moment(new Date()).format("YYYY-MM-DD")
};
render() {
const today = this.state.currentDate;
const day = moment(today).format("dddd");
const date = moment(today).format("MMMM D, YYYY");
return(
<ScrollView>
<View style={styles.container}>
<View style={styles.mainContainer}>
<View style={styles.widgetContainer}>
<MatIcon name="scale-bathroom" size={50} />
<Text style={styles.titleText}>Weight</Text>
</View>
<View style={styles.widgetContainer}>
<Text>
<Text style={styles.textUnderlines}>
{this.state.weight}
</Text>
<Text style={styles.recordsTypes}>
lb
</Text>
</Text>
<TouchableOpacity
style={styles.recordButton}
onPress={this.toggleWeightModal}
>
<Text style={styles.recordText}>Record</Text>
</TouchableOpacity>
</View>
</View>
<Modal
isVisible={this.state.isWeightModalVisible}
backdropOpacity={0.7}
onBackdropPress={() => this.setState({ isWeightModalVisible: false })}
>
<View style={{ flex: 1 }}>
<View style={styles.recordingModals}>
<Text style={styles.titleText}>Weight for {date}</Text>
<TextInput
value={this.state.weight}
onChangeText={(weight) => this.setState({ weight })}
keyboardType="numeric"
underlineColorAndroid="#000"
style={styles.modalInput}
placeholder="lbs"/>
<TouchableOpacity style={styles.recordButtonModal} onPress={this.toggleWeightModal}>
<Text style={styles.recordText}>Save Entry</Text>
</TouchableOpacity>
</View>
</View>
</Modal>
</ScrollView>
) ;
}
}
可以获取今天的日期并将其存储在变量中。如果日期不相同,则从状态(this.state.today)中比较该变量和日期(空容器)。