Added in API level 1

CRC32

open class CRC32 : Checksum
kotlin.Any
   ↳ java.util.zip.CRC32

A class that can be used to compute the CRC-32 of a data stream.

Passing a null argument to a method in this class will cause a NullPointerException to be thrown.

Summary

Public constructors

Creates a new CRC32 object.

Public methods
open Long

Returns CRC-32 value.

open Unit

Resets CRC-32 to initial value.

open Unit
update(b: Int)

Updates the CRC-32 checksum with the specified byte (the low eight bits of the argument b).

open Unit
update(b: ByteArray!, off: Int, len: Int)

Updates the CRC-32 checksum with the specified array of bytes.

open Unit

Updates the CRC-32 checksum with the specified array of bytes.

open Unit
update(buffer: ByteBuffer!)

Updates the CRC-32 checksum with the bytes from the specified buffer.

Public constructors

CRC32

Added in API level 1
CRC32()

Creates a new CRC32 object.

Public methods

getValue

Added in API level 1
open fun getValue(): Long

Returns CRC-32 value.

Return
Long the current checksum value

reset

Added in API level 1
open fun reset(): Unit

Resets CRC-32 to initial value.

update

Added in API level 1
open fun update(b: Int): Unit

Updates the CRC-32 checksum with the specified byte (the low eight bits of the argument b).

Parameters
b Int: the byte to update the checksum with

update

Added in API level 1
open fun update(
    b: ByteArray!,
    off: Int,
    len: Int
): Unit

Updates the CRC-32 checksum with the specified array of bytes.

Parameters
b ByteArray!: the byte array to update the checksum with
off Int: the start offset of the data
len Int: the number of bytes to use for the update
Exceptions
java.lang.ArrayIndexOutOfBoundsException if off is negative, or len is negative, or off+len is negative or greater than the length of the array b.

update

Added in API level 1
open fun update(b: ByteArray!): Unit

Updates the CRC-32 checksum with the specified array of bytes.

Parameters
b ByteArray!: the array of bytes to update the checksum with
Exceptions
java.lang.NullPointerException if b is null

update

Added in API level 26
open fun update(buffer: ByteBuffer!): Unit

Updates the CRC-32 checksum with the bytes from the specified buffer. The checksum is updated with the remaining bytes in the buffer, starting at the buffer's position. Upon return, the buffer's position will be updated to its limit; its limit will not have been changed.

Parameters
buffer ByteBuffer!: the ByteBuffer to update the checksum with
Exceptions
java.lang.NullPointerException if buffer is null