Titanium Mobile # Titanium.Filesystem.File
Object representing a path to a file or directory in the device's persistent storage.
0.8
0.8
9.2.0# Overview
Use the Titanium.Filesystem.getFile method to get a handle to a File object,
which represents a given path. There does not need to be an existing file or directory
does not need to exist before getFile is called. If the file doesn't exist, and
the file path identifies a file in a writable directory, writing to the file
creates the file implicitly.
See Titanium.Filesystem for constants identifying commonly-used device directories.
Use the Titanium.Filesystem.File.exists method to test whether the file exists.
A file object can point to an ordinary file, a directory or a symbolic link. Use Titanium.Filesystem.File.createDirectory to create a directory. Use the Titanium.Filesystem.File.getDirectoryListing method to retrieve a list of the directory's contents.
The File object doesn't provide methods for random access into the file.
The read method reads the file's entire contents into a Blob object.
The write method can either overwrite the entire file or append to an
existing file.
For random access to a file, such as accessing a small portion of a larger file,
you can open a file as a Titanium.Filesystem.FileStream object. Use the
Titanium.Filesystem.File.open method to get a FileStream for an
existing File object, or use the Titanium.Filesystem.openStream method
to get a FileStream directly without calling getFile first.
The Titanium.Filesystem module defines a number of properties and methods related to filesystem access, including properties that specify paths for application-specific directories, and methods for creating temporary files and directories.
On Android, files may be stored on external storage (that is, removable media such as SD Cards).
Note that once created with getFile, the path associated with a file object is
immutable. If you move the underlying file using Titanium.Filesystem.File.move
or Titanium.Filesystem.File.rename, you can no longer access it with the
original File object. You must use getFile to get a handle to the new path.
# Resource Files
The Resources directory and all the files in it are read-only. On Android, resource
files are stored in the resource bundle and do not have all of the properties of
normal files. In particular, they do not have creation or modification timestamps.
# Examples
# Reading a File
Data files shipped with the application are stored in the resources directory.
This example reads string data from a text file.
// resourcesDirectory is actually the default location, so the first
// argument could be omitted here.
file = Ti.Filesystem.getFile(Ti.Filesystem.resourcesDirectory, "textfile.txt");
var blob = file.read();
var readText = blob.text;
// dispose of file handle & blob.
file = null;
blob = null;
# Creating a Subdirectory
Files that the application writes to need to be stored outside of the resources directory, since that directory is read-only.
This example creates a subdirectory to store downloaded images.
The example assumes that two variables are defined elsewhere in the code:
myImageID, a string containing some kind of ID for the downloaded image,
and myImageData, a Blob containing JPEG image data.
var imageDir = Ti.Filesystem.getFile(Ti.Filesystem.applicationDataDirectory,
'downloaded_images');
if (! imageDir.exists()) {
imageDir.createDirectory();
}
// .resolve() provides the resolved native path for the directory.
var imageFile = Ti.Filesystem.getFile(imageDir.resolve(), myImageID + '.jpg');
Ti.API.info("ImageFile path is: " + imageFile.resolve());
if (imageFile.write(myImageData)===false) {
// handle write error
}
// dispose of file handles
imageFile = null;
imageDir = null;
# Properties
# executable READONLY
0.8 0.8 9.2.0true if the file is executable.
On iOS, this property exists but is always false.
# hidden
0.8 0.8 9.2.0Set to true if the file is hidden.
On iOS, this property exists but is always false.
# nativePath READONLY
0.8 0.8 9.2.0Native path associated with this file object, as a file URL.
On iOS, use the resolve method to obtain a plain file path for use with native modules.
# parent READONLY
0.8A File object representing the parent directory of the file identified by this object.
iOS platform-note: Prior to Titanium SDK 7.0.0, this method returned the path of the parent directory as a String. Since Titanium SDK 7.0.0 it returnes a Titanium.Filesystem.File reference for parity wih Android and Windows.
# remoteBackup
1.8.0 9.2.0Value indicating whether or not to back up to a cloud service.
Some apps may be rejected by Apple for backing up specific files; if this
is the case, ensure that this value is set to false for them. This
value should only need to be set once by your app, but setting it
multiple times will not cause problems. For files distributed with your
app, this will need to be set on boot. This flag will only affect iOS
versions 5.0.1 and later, but is safe to set on earlier versions.
Note that setting this property to false will also prevent the
file identified by this object from being backed up to iTunes.
Default: true
# symbolicLink READONLY
0.8 0.8 9.2.0true if the file identified by this object is a symbolic link.
# writable READONLY
0.8 0.8 9.2.0true if the file identified by this object is writable.
# Methods
# append
7.3.0 0.9.0 9.2.0Appends data to the file identified by this file object.
Data to append can be specified as a String, Blob, or File.
If the data argument is a File object, the file's contents
are appended to this file.
Returns true if the operation succeeds.
Parameters
| Name | Type | Description |
|---|---|---|
data | String | Titanium.Blob | Titanium.Filesystem.File | Data to append. |
Returns
- Type
- Boolean
# copy
0.9.0 7.3.0 9.2.0Copies the file identified by this file object to a new path.
Returns true if the copy succeeds.
Parameters
| Name | Type | Description |
|---|---|---|
destinationPath | String | Destination path to copy to. |
Returns
- Type
- Boolean
# createdAt
7.3.0 7.3.0 9.2.0Returns the creation Date for the file identified by this file object.
On Android, returns a Date whose getTime() value is 0 for resource files.
Returns
- Type
- Date
# createDirectory
0.8 0.8 9.2.0Creates a directory at the path identified by this file object.
Returns true if the directory was created successfully.
Parameters
| Name | Type | Description |
|---|---|---|
recursive | Boolean | Toggles whether to recursively create the directory structure (like mkdir -p).
Pass |
Returns
- Type
- Boolean
# createFile
6.1.0 0.9.0 9.2.0Creates a file at the path identified by this file object.
Note that if you write to a file that doesn't exist, the file is created automatically, so it is not necessary to call this method unless you want to explicitly create the file (for example, to create an empty file).
Returns true if the file was created successfully. Returns false if the
file already exists, or if the file couldn't be created for some other reason.
Returns
- Type
- Boolean
# createTimestamp DEPRECATED
0.8 0.8 9.2.0DEPRECATED SINCE 7.3.0
Use createdAt instead.
Returns the creation timestamp for the file identified by this file object.
On Android, returns 0 for resource files.
Returns
- Type
- Number
# deleteDirectory
0.8 0.8 9.2.0Deletes the directory identified by this file object.
Returns true if the operation was successful. Does nothing if the file
object does not identify a directory.
Parameters
| Name | Type | Description |
|---|---|---|
recursive | Boolean | Pass |
Returns
- Type
- Boolean
# deleteFile
0.8 0.8 9.2.0Deletes the file identified by this file object.
Returns true if the operation was successful.
Returns
- Type
- Boolean
# exists
0.8 0.8 9.2.0Returns true if the file or directory identified by this file object exists on the device.
Returns
- Type
- Boolean
# extension
0.8 0.8 9.2.0Returns the extension for the file identified by this file object.
Returns
- Type
- String
# getDirectoryListing
0.8 0.8 9.2.0Returns a listing of the directory identified by this file object, or null
if this object doesn't identify a directory.
Returns
- Type
- Array<String>
# getParent DEPRECATED
0.8 0.8 9.2.0DEPRECATED SINCE 7.0.0
Use the parent property to receive a File
reference instead. If you wish to receive the path, use the nativePath
property of that reference instead.
Returns the path of the parent directory holding the file identified by this
file object, as a String (deprecated) or as a File object.
Prior to Titanium SDK 7.0.0, on iOS this method returned the path of the parent directory as a String. Since Titanium SDK 7.0.0, this method has been deprecated in favor of the parent property and will return a Titanium.Filesystem.File reference in the future as well.
Returns
Returns a String on iOS, a Titanium.Filesystem.File on Android
- Type
- String | Titanium.Filesystem.File
# getProtectionKey
4.1.0 9.2.0Returns the protection key value of this file object.
Returns null if there's an error.
Returns
- Type
- String
# isDirectory
0.8 3.1.0 9.2.0Returns true if this file object represents a directory.
Returns
- Type
- Boolean
# isFile
0.8 3.1.0 9.2.0Returns true if this file object represents an ordinary file.
Returns
- Type
- Boolean
# modificationTimestamp DEPRECATED
0.8 0.8 9.2.0DEPRECATED SINCE 7.3.0
Use modifiedAt instead.
Returns the last modification time for this file.
On Android, returns 0 for resource files.
Returns
- Type
- Number
# modifiedAt
7.3.0 7.3.0 9.2.0Returns the last modification Date for the file identified by this file object.
On Android, returns a Date whose getTime() value is 0 for resource files.
Returns
- Type
- Date
# move
0.8 0.8 9.2.0Moves the file identified by this file object to another path.
Note that this method moves the stored file, but doesn't update this file object to point to the new path. To access the file after moving it, you must call getFile using the destination path to obtain a new file handle.
Parameters
| Name | Type | Description |
|---|---|---|
newpath | String | New location for the file. |
Returns
- Type
- Boolean
# open
0.8 0.8 9.2.0Opens the file identified by this file object for random access.
You can open the file for reading, writing, or appending by specifying one of the
MODE constants from Titanium.Filesystem:
MODE_READ, MODE_WRITE,
or MODE_APPEND.
The FileStream object returned by this call can be used to read from, write to, or
append to the file, depending on what mode the file is opened in.
Parameters
| Name | Type | Description |
|---|---|---|
mode | Number | Mode to open the file in: |
Returns
# read
0.8 0.8 9.2.0Returns the contents of the file identified by this file object as a Blob.
Returns
- Type
- Titanium.Blob
# rename
0.8 0.8 9.2.0Renames the file identified by this file object.
Returns true if the file was successfully renamed.
Fails if the destination is in a different directory than the current file. Use move to move a file to a different directory.
Note that this method renames the stored file, but doesn't update this file object to point to the new path. To access the file after renaming it, you must call getFile using the destination path to obtain a new file handle.
Parameters
| Name | Type | Description |
|---|---|---|
newname | String | New name for the file. |
Returns
- Type
- Boolean
# resolve
0.8 0.8 9.2.0Returns the fully-resolved native path associated with this file object.
On iOS, the path returned by this method is a plain file path, not a URL. It is suitable for use in native modules that need to access the file using native APIs.
On Android, the return value of resolve is a file:// URL, identical to the
nativePath property.
Returns
- Type
- String
# setProtectionKey
4.1.0 9.2.0Sets the protection key as an attribute to the file identified by this file object.
Returns true if successfully set. Returns false if failed.
Parameters
| Name | Type | Description |
|---|---|---|
fileProtectionType | String | File protection type. |
Returns
- Type
- Boolean
# spaceAvailable
0.8 0.8 9.2.0Returns the amount of free space available on the device where the file identified by this file object is stored.
Free space is returned in bytes.
Returns
- Type
- Number
# write
0.8 0.8 9.2.0Writes the specified data to the file identified by this file object.
If the append parameter is false or not specified, any existing data in
the file is overwritten.
If append is true, the specified data is appended to the end of the file.
Parameters
| Name | Type | Description |
|---|---|---|
data | String | Titanium.Filesystem.File | Titanium.Blob | Data to write, as a String, |
append | Boolean | If |
Returns
- Type
- Boolean