FileSystemManager.close

Introduction

Closes a file.

Usage Restrictions

Requires basic library version 3.0.0 or higher.

Parameters

Object object

Property	Type	Default	Required	Description
fd	string		Yes	File descriptor. fd is obtained through the FileSystemManager.open interface
success	function		No	Callback function for successful API call
fail	function		No	Callback function for failed API call
complete	function		No	Callback function called after API call completion (executed regardless of success or failure)

object.success Callback Function

Parameters

Object res

Property	Type	Description
success	string	true-Successful

object.fail

Callback Function

Parameters

Object res

Property	Type	Description
errMsg	string	Error message
success	string	false-Failed

errMsg Description

Error message	Explanation
parameter error: F10001	Invalid parameter
bad file descriptor: F10003	Invalid file descriptor

Sample Code

// pages/index/index.js
Page({
  close() {
    // Open file
    const fs = dlt.getFileSystemManager();
    fs.open({
      filePath: `${dlt.env.USER_DATA_PATH}/hello.txt`,
      flag: 'a+',
      success: (res) => {
        // Close file
        fs.close({
          fd: res.fd,
        });
      },
      fail: (res) => {
        console.log('fail', res);
      },
      complete: (res) => {
        console.log('complete', res);
      },
    });
  },
});