com.unitech.api.file

Class FileCtrl

java.lang.Object

com.unitech.api.file.FileCtrl

public class FileCtrl
extends java.lang.Object

This controller is used to read / write file to storage with system permission.

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	BUNDLE_DATA
static java.lang.String	BUNDLE_ERROR_CODE
static java.lang.String	BUNDLE_ERROR_MSG
static java.lang.String	BUNDLE_FILE_STREAM_ID
static java.lang.String	BUNDLE_PARCEL_FILE_DESCRIPTOR
static int	RESULT_CODE_ERROR
static int	RESULT_CODE_SUCCESS

Method Summary

Modifier and Type	Method and Description
android.os.Bundle	canRead(java.lang.String path) Tests whether the application can read the file denoted by this abstract pathname.
android.os.Bundle	canWrite(java.lang.String path) Tests whether the application can modify the file denoted by this abstract pathname.
android.os.Bundle	closeFileStream(long fileStreamId) Close the specific file stream that created by FileCtrl.createFileStream.
android.os.Bundle	copyFile(java.lang.String fromPath, java.lang.String toPath) Copy file bundle.
android.os.Bundle	createFile(java.lang.String path) Create file or folder on device
android.os.Bundle	createFileStream(java.lang.String filepath, boolean keepContents) Create a stream that you can use the stream to read or write data into the file.
android.os.Bundle	deleteFile(java.lang.String path) Deletes the file or folder.
android.os.Bundle	exists(java.lang.String path) Check if the file or folder exists.
android.os.Bundle	getExternalStorageInfo() get device external storage information include real path and description
static FileCtrl	getInstance(android.content.Context context) Gets instance.
android.os.Bundle	isDirectory(java.lang.String path) Check if path is directory.
android.os.Bundle	list(java.lang.String path) Returns an array of strings naming the files and directories in the directory denoted by this abstract pathname.
android.os.Bundle	openFile(java.lang.String path) open file for the given package name and path
android.os.Bundle	pathConverter(java.lang.String path) get real storage path description
android.os.Bundle	readFromFile(java.lang.String path) Read from file.
android.os.Bundle	renameTo(java.lang.String path, java.lang.String newName) Renames the file denoted by this name.
android.os.Bundle	writeToFile(java.lang.String path, byte[] content) Write to file with byte[]
android.os.Bundle	writeUTF8ToFile(java.lang.String path, java.lang.String content) Write String(utf8) to file.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

BUNDLE_ERROR_CODE

public static final java.lang.String BUNDLE_ERROR_CODE

See Also:

Constant Field Values

BUNDLE_ERROR_MSG

public static final java.lang.String BUNDLE_ERROR_MSG

See Also:

Constant Field Values

BUNDLE_DATA

public static final java.lang.String BUNDLE_DATA

See Also:

Constant Field Values

BUNDLE_PARCEL_FILE_DESCRIPTOR

public static final java.lang.String BUNDLE_PARCEL_FILE_DESCRIPTOR

See Also:

Constant Field Values

BUNDLE_FILE_STREAM_ID

public static final java.lang.String BUNDLE_FILE_STREAM_ID

See Also:

Constant Field Values

RESULT_CODE_ERROR

public static final int RESULT_CODE_ERROR

See Also:

Constant Field Values

RESULT_CODE_SUCCESS

public static final int RESULT_CODE_SUCCESS

See Also:

Constant Field Values

Method Detail

getInstance

public static FileCtrl getInstance(android.content.Context context)

Gets instance.

Parameters:

context - the context

Returns:

the instance

writeUTF8ToFile

public android.os.Bundle writeUTF8ToFile(java.lang.String path,
                                         java.lang.String content)

Write String(utf8) to file.

Parameters:

path - the path (String)

content - the content (String)

Returns:

A bundle contains the error code and message
int erroeCode = bundle.getInt("errorCode"), (error:1, success=0)
String errorMsg = bundle.getString("errorMsg");

writeToFile

public android.os.Bundle writeToFile(java.lang.String path,
                                     byte[] content)

Write to file with byte[]

Parameters:

path - the path (String)

content - the content (String)

Returns:

A bundle contains the error code and message
int erroeCode = bundle.getInt("errorCode"), (error:1, success=0)
String errorMsg = bundle.getString("errorMsg");

readFromFile

public android.os.Bundle readFromFile(java.lang.String path)

Read from file.

Parameters:

path - the path (String)

Returns:

A bundle contains the error code and message
int erroeCode = bundle.getInt("errorCode"), (error:1, success=0)
String errorMsg = bundle.getString("errorMsg");
byte[] content = bundle.getByteArray("Data");

copyFile

public android.os.Bundle copyFile(java.lang.String fromPath,
                                  java.lang.String toPath)

Copy file bundle.

Parameters:

fromPath - the from path (String)

toPath - the to path (String)

Returns:

A bundle contains the error code and message
int erroeCode = bundle.getInt("errorCode"), (error:1, success=0)
String errorMsg = bundle.getString("errorMsg");

createFile

public android.os.Bundle createFile(java.lang.String path)

Create file or folder on device

Parameters:

path - The path of file or folder. If you want to create folder, the path should end with "/" like "/sdcard/newfolder/" (String)

Returns:

A bundle contains the error code and message
int errorCode = bundle.getInt("errorCode"), (error:1, success=0)
String errorMsg = bundle.getString("errorMsg");

deleteFile

public android.os.Bundle deleteFile(java.lang.String path)

Deletes the file or folder. If this pathname denotes a folder, then the folder must be empty in order to be deleted.

Parameters:

path - The path of file or folder. (String)

Returns:

A bundle contains the error code and message
int errorCode = bundle.getInt("errorCode"), (error:1, success=0)
String errorMsg = bundle.getString("errorMsg");

createFileStream

public android.os.Bundle createFileStream(java.lang.String filepath,
                                          boolean keepContents)

Create a stream that you can use the stream to read or write data into the file.
If you have completed your operation on this stream, you should call FileCtrl.closeFileStream(fileStreamId) to close this stream.

Parameters:

filepath - The file path that you want to make a stream on it. (String)

keepContents - Whether you want to keep the file contents. If you want to read data from the stream, you should set keepContents as true. (true: keep, false: erase file) (boolean)

Returns:

A bundle contains the error code and message
int errorCode = bundle.getInt("errorCode"), (error:1, success=0)
String errorMsg = bundle.getString("errorMsg");
ParcelFileDescriptor pfd = bundle.getParcelable(FileCtrl.BUNDLE_PARCEL_FILE_DESCRIPTOR);
long fileStreamId = bundle.getLong(FileCtrl.BUNDLE_FILE_STREAM_ID);

closeFileStream

public android.os.Bundle closeFileStream(long fileStreamId)

Close the specific file stream that created by FileCtrl.createFileStream.

Parameters:

fileStreamId - The file stream ID that you want to close. (long)

Returns:

A bundle contains the error code and message
int errorCode = bundle.getInt("errorCode"), (error:1, success=0)
String errorMsg = bundle.getString("errorMsg");

exists

public android.os.Bundle exists(java.lang.String path)

Check if the file or folder exists.

Parameters:

path - The path of the file or folder. (String)

Returns:

A bundle contains the error code and message
int errorCode = bundle.getInt("errorCode"), (1: file or folder does not exist, 0: file or folder exists)
String errorMsg = bundle.getString("errorMsg");

isDirectory

public android.os.Bundle isDirectory(java.lang.String path)

Check if path is directory.

Parameters:

path - The path of the file or folder. (String)

Returns:

A bundle contains the error code and message
int errorCode = bundle.getInt("errorCode"), (1: path is not directory, 0: path is directory)
String errorMsg = bundle.getString("errorMsg");

openFile

public android.os.Bundle openFile(java.lang.String path)

open file for the given package name and path

Parameters:

path - The path of the file. (String)

Returns:

A bundle contains the error code and message
int errorCode = bundle.getInt("errorCode"), (1: Cannot open the file, 0: success to open the file)
String errorMsg = bundle.getString("errorMsg");

list

public android.os.Bundle list(java.lang.String path)

Returns an array of strings naming the files and directories in the directory denoted by this abstract pathname.

Parameters:

path - The path of the file or folder. (String)

Returns:

A bundle contains the error code and message
int errorCode = bundle.getInt("errorCode"), (1: list is null, 0: list is not null)
String errorMsg = bundle.getString("errorMsg");

renameTo

public android.os.Bundle renameTo(java.lang.String path,
                                  java.lang.String newName)

Renames the file denoted by this name.

Parameters:

path - The path of the file or folder. (String)

Returns:

A bundle contains the error code and message
int errorCode = bundle.getInt("errorCode"), (1: fail, 0: success)
String errorMsg = bundle.getString("errorMsg");

canWrite

public android.os.Bundle canWrite(java.lang.String path)

Tests whether the application can modify the file denoted by this abstract pathname.

Parameters:

path - The path of the file or folder. (String)

Returns:

A bundle contains the error code and message
int errorCode = bundle.getInt("errorCode"), (1: fail, 0: success)
String errorMsg = bundle.getString("errorMsg");

canRead

public android.os.Bundle canRead(java.lang.String path)

Tests whether the application can read the file denoted by this abstract pathname.

Parameters:

path - The path of the file or folder. (String)

Returns:

A bundle contains the error code and message
int errorCode = bundle.getInt("errorCode"), (1: fail, 0: success)
String errorMsg = bundle.getString("errorMsg");

getExternalStorageInfo

public android.os.Bundle getExternalStorageInfo()

get device external storage information include real path and description

Returns:

A bundle contains the error code and message
int errorCode = bundle.getInt("errorCode"), (1: fail, 0: success)
String errorMsg = bundle.getString("errorMsg");

pathConverter

public android.os.Bundle pathConverter(java.lang.String path)

get real storage path description

Parameters:

path - The path of the file or folder that start with USB/, SD/ or FLASH/ (String)

Returns:

String indicate the real storage path
use bundle.getString("REAL_PATH") to get converted path int errorCode = bundle.getInt("errorCode"), (1: fail, 0: success)
String errorMsg = bundle.getString("errorMsg");