“如何创建自动将文件从android文件夹上传到FTP服务器的后台服务”

Question

我想在移动设备上创建一项服务，该服务将文件夹中的文件自动上传到FTP服务器。
我从https://github.com/jamesisaac/react-native-background-task处读取了一些信息。
当我尝试后台进程时，我什么都没看到在后台进程中。
这是我的代码

import React from 'react'
import { Alert, AsyncStorage, Button } from 'react-native'
import BackgroundTask from 'react-native-background-task'

BackgroundTask.define(async () => {
  // Fetch some data over the network which we want the user to have an up-to-
  // date copy of, even if they have no network when using the app
  const response = await fetch('http://192.168.43.35:3000/getme')
  const text = await response.text()

  // Data persisted to AsyncStorage can later be accessed by the foreground app
  await AsyncStorage.setItem('@MyApp:key', text)

  // Remember to call finish()
  BackgroundTask.finish()
})

class MyApp extends React.Component {
  componentDidMount() {
    BackgroundTask.schedule({
      period: 1800, // Aim to run every 30 mins - more conservative on battery
    })

    // Optional: Check if the device is blocking background tasks or not
    this.checkStatus()
  }

  async checkStatus() {
    const status = await BackgroundTask.statusAsync()

    if (status.available) {
      // Everything's fine
      return
    }

    const reason = status.unavailableReason
    if (reason === BackgroundTask.UNAVAILABLE_DENIED) {
      Alert.alert('Denied', 'Please enable background "Background App Refresh" for this app')
    } else if (reason === BackgroundTask.UNAVAILABLE_RESTRICTED) {
      Alert.alert('Restricted', 'Background tasks are restricted on your device')
    }
  }

  render() {
    return (
      <View>
        <Button
          title="Read results from AsyncStorage"
          onPress={async () => {
            const result = await AsyncStorage.getItem('@MyApp:key')
            console.log(result) 
          }}
        />
      </View>
    )
  }
}