FileSystemManager.getFileInfo

Introduction

Get the size of a local temporary file or local cached file in the current mini-program.

Usage Restrictions

Supported in basic library version 3.0.0 or higher.

Parameters

Object object

Property	Type	Default	Required	Description
filePath	string		Yes	The file path to be read (relative path) or the file/directory path to be checked for existence (relative path).
success	function		No	Callback function that is called when the interface is successfully invoked.
fail	function		No	Callback function that is called when the interface fails to be invoked.
complete	function		No	Callback function that is called when the interface invocation ends (both successful and unsuccessful cases).

object.success Callback Function

Parameters

Object res

Property	Type	Description
size	number	File size in bytes.
success	string	true - Set successfully.

object.fail Callback Function

Parameters

Object res

Property	Type	Description
errMsg	string	Error message.
success	string	false - Set failed.

errMsg Description

Error Message	Description
parameter error: F10001	Invalid parameters.
fail file does not exist: F10006	File does not exist.

Sample Code

// pages/index/index.js
Page({
  getFileInfo() {
    const fs = dlt.getFileSystemManager();
    fs.getFileInfo({
      filePath: `${dlt.env.USER_DATA_PATH}/test.png`,
      success: (res) => {
        console.log(res);
      },
    });
  },
});