Added in API level 29

Summary: Nested Classes | Methods | Inherited Methods

FileUtils

Kotlin |Java

public final class FileUtils
extends Object

java.lang.Object
↳	android.os.FileUtils

Utility methods useful for working with files.

Summary

Nested classes
`interface`	`FileUtils.ProgressListener` Listener that is called periodically as progress is made.

Public methods
`static void`	`closeQuietly(AutoCloseable closeable)` Closes the given object quietly, ignoring any checked exceptions.
`static void`	`closeQuietly(FileDescriptor fd)` Closes the given object quietly, ignoring any checked exceptions.
`static long`	`copy(InputStream in, OutputStream out, CancellationSignal signal, Executor executor, FileUtils.ProgressListener listener)` Copy the contents of one stream to another.
`static long`	`copy(FileDescriptor in, FileDescriptor out, CancellationSignal signal, Executor executor, FileUtils.ProgressListener listener)` Copy the contents of one FD to another.
`static long`	`copy(FileDescriptor in, FileDescriptor out)` Copy the contents of one FD to another.
`static long`	`copy(InputStream in, OutputStream out)` Copy the contents of one stream to another.

Inherited methods

From class


        
          java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeout, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long timeout)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

Public methods

closeQuietly

Added in API level 29

public static void closeQuietly (AutoCloseable closeable)

Closes the given object quietly, ignoring any checked exceptions. Does nothing if the given object is null.

Parameters
`closeable`	`AutoCloseable`: This value may be `null`.

closeQuietly

Added in API level 29

public static void closeQuietly (FileDescriptor fd)

Closes the given object quietly, ignoring any checked exceptions. Does nothing if the given object is null.

Parameters
`fd`	`FileDescriptor`: This value may be `null`.

copy

Added in API level 29

public static long copy (InputStream in, 
                OutputStream out, 
                CancellationSignal signal, 
                Executor executor, 
                FileUtils.ProgressListener listener)

Copy the contents of one stream to another.

Attempts to use several optimization strategies to copy the data in the kernel before falling back to a userspace copy as a last resort.

Parameters
`in`	`InputStream`: This value must never be `null`.
`out`	`OutputStream`: This value must never be `null`.
`signal`	`CancellationSignal`: to signal if the copy should be cancelled early. This value may be `null`.
`executor`	`Executor`: that listener events should be delivered via. This value may be `null`.
`listener`	`FileUtils.ProgressListener`: to be periodically notified as the copy progresses. This value may be `null`.

Returns
`long`	number of bytes copied.

Throws
`IOException`

copy

Added in API level 29

public static long copy (FileDescriptor in, 
                FileDescriptor out, 
                CancellationSignal signal, 
                Executor executor, 
                FileUtils.ProgressListener listener)

Copy the contents of one FD to another.

Attempts to use several optimization strategies to copy the data in the kernel before falling back to a userspace copy as a last resort.

Parameters
`in`	`FileDescriptor`: This value must never be `null`.
`out`	`FileDescriptor`: This value must never be `null`.
`signal`	`CancellationSignal`: to signal if the copy should be cancelled early. This value may be `null`.
`executor`	`Executor`: that listener events should be delivered via. This value may be `null`.
`listener`	`FileUtils.ProgressListener`: to be periodically notified as the copy progresses. This value may be `null`.

Returns
`long`	number of bytes copied.

Throws
`IOException`

copy

Added in API level 29

public static long copy (FileDescriptor in, 
                FileDescriptor out)

Copy the contents of one FD to another.

Attempts to use several optimization strategies to copy the data in the kernel before falling back to a userspace copy as a last resort.

Parameters
`in`	`FileDescriptor`: This value must never be `null`.
`out`	`FileDescriptor`: This value must never be `null`.

Returns
`long`	number of bytes copied.

Throws
`IOException`

copy

Added in API level 29

public static long copy (InputStream in, 
                OutputStream out)

Copy the contents of one stream to another.

Attempts to use several optimization strategies to copy the data in the kernel before falling back to a userspace copy as a last resort.

Parameters
`in`	`InputStream`: This value must never be `null`.
`out`	`OutputStream`: This value must never be `null`.

Returns
`long`	number of bytes copied.

Throws
`IOException`

FileUtils

Summary

Nested classes

Public methods

Inherited methods

Public methods

closeQuietly

closeQuietly

copy

copy

copy

copy