# FileSystemManager.writeFile(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

Write file

# parameter

# Object object

attribute type Default values Required Introductions
filePath string yes File path to write to (Local path)
data string/ArrayBuffer yes Text or binary data to write
encoding string utf8 no Specifies the character encoding for writing to the file
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.encoding Legal value

| value | Introductions | Minimum version | | -- | ---- | 初始值 | | ascii | | | | base64 | | | | binary | | | | hex | | | | ucs2 | Read in small endorder | | | ucs-2 | Read in small endorder | | | Utf16le | Read in small endorder | | | utf-16le | Read in small endorder | | | utf-8 | | | | utf8 | | | | latin1 | | |

# object.fail callback

# parameter
# Object res
attribute type Introductions
errMsg string Error message

res.errMsg Legal value

value Introductions Minimum version
fail No such file or directory, open ${filePath} Specified filePath Directory does not exist
fail permission denied, open ${dirPath} Specified filePath Path does not have write permissions
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.writeFile({
  filePath: `${wx.env.USER_DATA_PATH}/hello.txt`, 
  data: 'some text  or  arrayBuffer',
  encoding: 'utf8',
  success(res) {
    console.log(res)
  },
  fail(res) {
    console.error(res)
  }
})

// Synchronous interface
try {
  const res = fs.writeFileSync(
    `${wx.env.USER_DATA_PATH}/hello.txt`, 
    'some text  or  arrayBuffer',
    'utf8'
  )
  console.log(res)
} catch(e) {
  console.error(e)
}