程序包 ohos.data.usage

类 StatVfs

java.lang.Object

ohos.data.usage.StatVfs

public class StatVfs
extends Object

Provides methods to query the capacity of the file system, such as the total and available capacity.

从以下版本开始:

3

构造器概要

构造器

构造器	说明
StatVfs(String path)	A constructor used to create a StatVfs instance with the specified path.

方法概要

限定符和类型	方法	说明
long	getAvailableSpace()	Obtains the available bytes of the file system for the application.
long	getFreeSpace()	Obtains the remaining bytes of the file system.
long	getSpace()	Obtains the total bytes of the file system.
static boolean	isSupported()	Checks whether StatVfs is supported on current device.
void	reStatVfs(String path)	Updates information about the file system with the specified path.

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

StatVfs

public StatVfs(String path)

A constructor used to create a StatVfs instance with the specified path.

参数:

path - Indicates the path.

从以下版本开始:

3

方法详细资料

isSupported

public static boolean isSupported()

Checks whether StatVfs is supported on current device.

返回:

Returns true if StatVfs is supported on current device; returns false otherwise.

从以下版本开始:

3

reStatVfs

public void reStatVfs(String path)

Updates information about the file system with the specified path.

参数:

path - Indicates the path.

从以下版本开始:

3

getSpace

public long getSpace()

Obtains the total bytes of the file system.

返回:

Returns the total bytes of the file system; returns -1 if the path of the file system is invalid.

从以下版本开始:

4

getFreeSpace

public long getFreeSpace()

Obtains the remaining bytes of the file system.

返回:

Returns the remaining bytes of the file system; returns -1 if the path of the file system is invalid.

从以下版本开始:

4

getAvailableSpace

public long getAvailableSpace()

Obtains the available bytes of the file system for the application.

返回:

Returns the available bytes of the file system for the application; returns -1 if the path of the file system is invalid.

从以下版本开始:

4