程序包 ohos.global.resource

类 BaseFileDescriptor

java.lang.Object

ohos.global.resource.BaseFileDescriptor

所有已实现的接口:

Closeable, AutoCloseable

直接已知子类:

RawFileDescriptor

public abstract class BaseFileDescriptor
extends Object
implements Closeable

Provides the file descriptor data, and reads the data start position and the file length.

从以下版本开始:

3

构造器概要

构造器

构造器	说明
BaseFileDescriptor()

方法概要

限定符和类型	方法	说明
abstract FileDescriptor	getFileDescriptor()	Obtains the file descriptor.
abstract long	getFileSize()	Obtains the file size.
abstract long	getStartPosition()	Obtains the start position of data in the file.

从接口继承的方法 java.io.Closeable

close

从类继承的方法 java.lang.Object

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

构造器详细资料

BaseFileDescriptor

public BaseFileDescriptor()

方法详细资料

getFileDescriptor

public abstract FileDescriptor getFileDescriptor()

Obtains the file descriptor.

You can use the file descriptor to read data in the file.

返回:

Returns the file descriptor.

从以下版本开始:

3

getFileSize

public abstract long getFileSize()

Obtains the file size.

返回:

Returns the file size, in bytes.

从以下版本开始:

3

getStartPosition

public abstract long getStartPosition()

Obtains the start position of data in the file.

返回:

Returns the start position.

从以下版本开始:

3