# FileSystemManager.copyFile(Object object)

with Promise style call: Not supported

Mini Program plugin: Support, need to Mini Program base library version no less than 2.19.2

Copy file

# parameter

# Object object

attribute	type	Required	Introductions
srcPath	string	yes	Source file path, support local path
destPath	string	yes	Destination file path, local path support
success	function	no	Interface calls the successful callback function
fail	function	no	Interface calls failed callback functions
complete	function	no	Callback function at the end of an interface call (both successful and unsuccessful calls are executed)

# object.fail callback

# parameter

# Object res

attribute	type	Introductions
errMsg	string	Error message

res.errMsg Legal value

value	Introductions	Minimum version
fail permission denied, copyFile ${srcPath} -> ${destPath}	Specify destination file path without write permissions
fail No such file or directory, copyFile ${srcPath} -> ${destPath}	The source file does not exist or the upper directory of the destination file path does not exists
fail the maximum size of the file storage limit is exceeded	Insufficient storage space
fail sdcard not mounted	Android sdcard Mount failure

# sample code

const fs = wx.getFileSystemManager()
fs.copyFile({
  srcPath: `${wx.env.USER_DATA_PATH}/hello.txt`, 
  destPath: `${wx.env.USER_DATA_PATH}/hello_copy.txt`
  success(res) {
    console.log(res)
  },
  fail(res) {
    console.error(res)
  }
})

// Synchronous interface
try {
  fs.copyFileSync(
    `${wx.env.USER_DATA_PATH}/hello.txt`, 
    `${wx.env.USER_DATA_PATH}/hello_copy.txt`
  )
} catch(e) {
  console.error(e)
}