反应本地文档提取器：URI不确定，而使用的文档拾取器对本机进行了反应

Question

如何修复它：我想获取绝对路径，但是当在React Native中使用文档Picker时，File UEI是不确定的。

import { StyleSheet, Text, View,Button } from 'react-native'
import React from 'react'
import DocumentPicker from 'react-native-document-picker'
import RNFetchBlob from 'rn-fetch-blob'
import Pdf from 'react-native-open-pdf';


const openPdfex = () => {

 const openFile = () => {
  
    const res =  DocumentPicker.pick({
          type: [DocumentPicker.types.allFiles],
        });

        console.log("absolute path =====> " ,res.uri);
  }

 return (
    <View>
      <Text>openPdf</Text>
      <Button title='Open PDF' onPress={openFile}></Button>
    </View>
  )
}

Answer 1

在文档中，它指出documentpicker.pick（）返回承诺，并且由于您没有解决诺言，因此您无法从中获得URI。

  const openFile = async () => {
    try {
      const res = DocumentPicker.pick({
        type: [DocumentPicker.types.allFiles],
      });

      console.log('absolute path =====> ', res.uri);
    } catch (error) {
      console.log(error);
    }
  };

尝试一下，看看它是否有效。

Answer 2

尝试一下它有效的

const openFile = async () => {
try {
  const res = await DocumentPicker.pick({
    type: [DocumentPicker.types.allFiles],
  });
  console.log('absolute path =====> ', JSON.stringify(res[0]['uri']));
} catch (error) {
  console.log(error);
}}

Answer 3

使用documentpicker.picksingle而不是documentpicker.pick