How to resolve Error while updating property 'd' of a view managed by:RNSVGPath InvalidNumber

问题

I need to load my sql server data using react-native-chart-kit ,but when I use this code I get this error :

Error while updating property 'd' of a view managed by:RNSVGPath null InvalidNumber

import React from 'react';
import {Text,View,Dimensions} from 'react-native';
import {LineChart} from "react-native-chart-kit";
export default class Home extends React.Component {
  constructor(props) {
      super(props);
      this.state = {
         isLoading: true,
         data: {
             labels: ["Gen", "Feb", "Mar", "Apr", "Mag", "Giu", "Lug", "Ago", "Set", "Ott", "Nov", "Dic"],
             datasets: [
                 {
                     data: []
                 }
             ]
         }
      }
  }

  GetData = () => {
      const self = this;

      return fetch('http://192.168.1.5:80/graph.php')
      .then((response) => response.json())
      .then((responseJson) => {

        // clone the data from the state
        const dataClone = {...self.state.data}

        const values = responseJson.map(value => value.ChiffreAffaire);

        dataClone.datasets[0].data = values;

        self.setState({
          isLoading: false,
          data: dataClone,
        });

      })
      .catch((error) =>{
        console.error(error);
      });
  }

  render() {
      return (
        <View>
        <LineChart
        data={this.state.data}
        width={Dimensions.get("window").width} // from react-native
        height={220}
        yAxisLabel={"$"}
        chartConfig={chartConfig}
        bezier
        style={{
          marginVertical: 8,
          borderRadius: 16
        }}
        />
        </View>
      );
  }
}

The data I get from my php file is like :[{"ChiffreAffaire":"4800.00"},{"ChiffreAffaire":"12000.00"}]

<?php

$serverName="DESKTOP-T5SLVUB\SQL2008R2";
$connectionInfo=array("Database"=>"Netos_DB","UID"=>"sa","PWD"=>"123");
$conn=sqlsrv_connect($serverName,$connectionInfo);
$sql = "select  ChiffreAffaire from V502_client where Mois=2 and Annee=2020 "; 
$stmt = sqlsrv_query( $conn, $sql  );
 while( $row[] = sqlsrv_fetch_array( $stmt, SQLSRV_FETCH_NUMERIC) ){
      $Item = $row;
      $json = json_encode($Item);    
}

echo $json;
?>

I don't know what is the problem and why I m getting this error ; please if you have any Idea

回答1:

I resolved my problem !!!! for those having same problem ,I will explain the error to u : Well the problem was that my LineChart take data before its reload completely so it gets null and this an Invalid format of number ;

So what you have to do ,is add in render method before return :

 if(this.state.isLoading){
    return(
      <View style={{flex: 1, padding: 20}}>
          <ActivityIndicator/>
        </View>

    )
  }

So we are not going to pass to LineChart until allll data is loaded

回答2:

This works for me:

{
    this.state.loadComplete &&
        (<LineChart
            data={this.state.dt}
            width={Dimensions.get("window").width} // from react-native
            height={this.height}
            yAxisLabel=""
            yAxisSuffix="b"
            yAxisInterval={1} // optional, defaults to 1
            chartConfig={this.config}
            bezier
            style={{
                marginVertical: 8,
                borderRadius: 16
            }}
        />)
}

来源：https://stackoverflow.com/questions/60485319/how-to-resolve-error-while-updating-property-d-of-a-view-managed-byrnsvgpath

标签

php

react-native

react-native-chart-kit