power_sensor/jscore/pages/Desktop/Home.js

import React, {Component} from 'react';
import {StyleSheet, View, Text, DeviceEventEmitter, ScrollView, Dimensions} from 'react-native';
import {Button} from '@ant-design/react-native';
import ReadUHF from "../../utils/ReadUHF";
import Barcode from "react-native-barcode-builder";

let screenW = Dimensions.get('window').width;

class DesktopHome extends Component {
    constructor(props) {
        super(props);
        this.state = {
            data: [],
            userData: [],
            error: 0,
            isStart: true,
            timerID: [],
        };
    }

    componentDidMount() {
        ReadUHF.changeFlag(0)
        DeviceEventEmitter.addListener('MsgFromAndroid', this._addCode);
        DeviceEventEmitter.addListener('onKeyDown', this.onKeyDown);
    }

    componentWillUnmount() {
        ReadUHF.stopRead()
    }

    _addCode = (item) => {
        const str = JSON.parse(item)
        // 防止重复扫描
        let {data, userData, error} = this.state;
        const product_index = userData.indexOf(str['userData'])
        if (product_index < 0) {
            userData.push(str['userData'])
            data.push(str)
            if (str['error']) {
                error += 1
            }
            this.setState({data, userData, error})
        }
    }
    _start = () => {
        let {isStart} = this.state;
        ReadUHF.doRead()
        this.setState({isStart: !isStart})
    }
    _clear = () => {
        this.setState({userData: [], data: [], error: 0})
    }
    onKeyDown = () => {
        let {isStart} = this.state;
        this.setState({isStart: !isStart})
    }

    dianYaRender = (item, index) => {
        const assetID = item.assetID.slice(7, 21)
        const districtText = item.districtText.split('-')[0]
        const releaseDates = item.releaseDate.split('-')
        const releaseDate = releaseDates[0]+"年"+releaseDates[1]+"月"
        return (
            <View
                key={index}
                style={styles.mainView}
            >
                <Text style={styles.textColor}>计量{item.kind}</Text>
                <View style={styles.betweenView}>
                    <Text style={styles.textColor3}>型号：{item.model}</Text>
                    <View style={styles.centerWidth}>
                        <Text style={styles.textColor3}>电压等级：{item.voltageLevel}</Text>
                    </View>
                    <Text style={styles.textColor3}>绕组数量：{item.secondWindingCount}</Text>
                </View>
                <View style={styles.betweenView}>
                    <Text style={styles.textColor3}>二次电压</Text>
                    <View style={styles.centerWidth}>
                        <Text style={styles.textColor3}>准确等级</Text>
                    </View>
                    <Text style={styles.textColor3}>生产日期</Text>
                </View>
                <View style={styles.betweenView}>
                    <Text style={styles.textColor3}>{item.secondVoltage}</Text>
                    <View style={styles.centerWidth}>
                        <Text style={styles.textColor3}>{item.accuracy}</Text>
                    </View>
                    <Text style={styles.textColor3}>{releaseDate}</Text>
                </View>
                <View style={styles.betweenView}>
                    <Text style={styles.textColor3}>安装场所：{item.place}</Text>
                    <View style={styles.centerWidth}>
                        <Text style={styles.textColor3}>额定负荷：{item.ratedLoad}</Text>
                    </View>
                    <Text style={styles.textColor3}>电压因数：{item.voltageFactor}</Text>
                </View>
                <View style={styles.betweenView}>
                    <Text style={styles.textColor3}>{item.manufacturer}</Text>
                    <View style={{
                        width: (screenW - 10) / 3 * 2,
                        borderLeftWidth: 0.5,
                        borderLeftColor: '#7b7b7b',
                    }}>
                        <View style={{
                            flexDirection: 'row',
                            marginHorizontal: 3,
                        }}>
                            <View style={{
                                flex: 1,
                            }}>
                                <Text style={[styles.textColor, {textAlign: 'left'}]}>国网{districtText}电力</Text>
                            </View>
                            <Text style={[styles.textColor, {textAlign: 'right'}]}>NO.{assetID}</Text>
                        </View>
                        <View style={{
                            marginHorizontal: 5,
                        }}>
                            <Barcode value={item.assetID} format="CODE128" height={35} width={1.1}/>
                            <Text style={[styles.textColor]}>{item.assetID}</Text>
                        </View>
                    </View>
                </View>

            </View>
        )
    }

    dianLiuRender = (item, index) => {
        const assetID = item.assetID.slice(7, 21)
        const districtText = item.districtText.split('-')[0]
        const releaseDates = item.releaseDate.split('-')
        const releaseDate = releaseDates[0]+"年"+releaseDates[1]+"月"
        return (
            <View
                key={index}
                style={styles.mainView}
            >
                <Text style={styles.textColor}>计量{item.kind}</Text>
                <View style={styles.betweenView}>
                    <Text style={styles.textColor3}>型号：{item.model}</Text>
                    <View style={styles.centerWidth}>
                        <Text style={styles.textColor3}>电压等级：{item.voltageLevel}</Text>
                    </View>
                    <Text style={styles.textColor3}>绕组数量：{item.secondWindingCount}</Text>
                </View>
                <View style={styles.betweenView}>
                    <Text style={styles.textColor3}>一次电流</Text>
                    <View style={styles.centerWidth}>
                        <Text style={styles.textColor3}>二次电流</Text>
                    </View>
                    <Text style={styles.textColor3}>生产日期</Text>
                </View>
                <View style={styles.betweenView}>
                    <Text style={styles.textColor3}>{item.firstCurrent}</Text>
                    <View style={styles.centerWidth}>
                        <Text style={styles.textColor3}>{item.senondCurrent}</Text>
                    </View>
                    <Text style={styles.textColor3}>{releaseDate}</Text>
                </View>
                <View style={styles.betweenView}>
                    <Text style={styles.textColor3}>安装场所：{item.place}</Text>
                    <View style={styles.centerWidth}>
                        <Text style={styles.textColor3}>额定负荷：{item.ratedLoad}</Text>
                    </View>
                    <Text style={styles.textColor3}>准确等级：{item.accuracy}</Text>
                </View>
                <View style={styles.betweenView}>
                    <Text style={styles.textColor3}>{item.manufacturer}</Text>
                    <View style={{
                        width: (screenW - 10) / 3 * 2,
                        borderLeftWidth: 0.5,
                        borderLeftColor: '#7b7b7b',
                    }}>
                        <View style={{
                            flexDirection: 'row',
                            marginHorizontal: 3,
                        }}>
                            <View style={{
                                flex: 1,
                            }}>
                                <Text style={[styles.textColor, {textAlign: 'left'}]}>国网{districtText}电力</Text>
                            </View>
                            <Text style={[styles.textColor, {textAlign: 'right'}]}>NO.{assetID}</Text>
                        </View>
                        <View style={{
                            marginHorizontal: 5,
                        }}>
                            <Barcode value={item.assetID} format="CODE128" height={35} width={1.1}/>
                            <Text style={[styles.textColor]}>{item.assetID}</Text>
                        </View>
                    </View>
                </View>

            </View>
        )
    }

    errorRender = (item, index) => {
        return (
            <View
                key={index}
                style={[styles.mainView, {padding: 10}]}
            >
                <Text style={{color: 'red'}}>{item.error_msg}</Text>
            </View>
        )
    }

    render() {
        let {isStart} = this.state;
        const start_text = isStart ? '开始识别' : '停止识别'
        return (
            <View style={styles.container}>
                <ScrollView style={styles.container}>
                    {
                        this.state.data.map((item, index) => {
                            if (item.error) {
                                return this.errorRender(item, index)
                            }
                            else if (item.kind.indexOf('电压') > -1) {
                                return this.dianYaRender(item, index)
                            }
                            else if (item.kind.indexOf('电流') > -1) {
                                return this.dianLiuRender(item, index)
                            }

                        })
                    }
                </ScrollView>
                <Text
                    style={{marginLeft: 10, color: '#f77b22'}}>合计：{this.state.data.length} 失败：{this.state.error}</Text>
                <View style={{flexDirection: 'row'}}>
                    <Button onPress={() => this._start()}
                            type="primary"
                            style={[styles.button, {
                                backgroundColor: isStart ? '#0099FF' : 'red',
                                width: '65%'
                            }]}
                    >
                        <Text style={{color: '#fff'}}>
                            {start_text}
                        </Text>
                    </Button>
                    <Button onPress={() => this._clear()}
                            type="warning"
                            style={{
                                width: '25%',
                                borderRadius: 5,
                                marginHorizontal: 10,
                                marginTop: 5,
                                marginBottom: 2,
                                borderWidth: 0,
                                backgroundColor: "#de7642"
                            }}
                    >
                        <Text style={{color: '#fff'}}>
                            清除
                        </Text>
                    </Button>
                </View>
            </View>
        );
    }
}

const styles = StyleSheet.create({
    container: {
        flex: 1
    },
    button: {
        borderRadius: 5,
        marginHorizontal: 10,
        marginBottom: 2,
        marginTop: 5,
        borderWidth: 0,
        backgroundColor: "#2b90ea"
    },
    textColor: {
        color: '#333',
        textAlign: 'center',
    },
    textColor3: {
        color: '#333',
        textAlign: 'center',
        width: (screenW - 9) / 3,

    },
    textColor2: {
        color: '#333',
        textAlign: 'center',
        width: (screenW - 10) / 2,
    },
    mainView: {
        margin: 5,
        borderWidth: 0.5,
        borderColor: '#7b7b7b',
    },
    betweenView: {
        flexDirection: 'row',
        justifyContent: 'space-between',
        borderTopWidth: 0.5,
        borderTopColor: '#7b7b7b',
        alignItems: 'center',
    },
    centerWidth: {
        borderLeftWidth: 0.5,
        borderRightWidth: 0.5,
        borderLeftColor: '#7b7b7b',
        borderRightColor: '#7b7b7b',
    },
})

export default DesktopHome;