Android Utililty Methods Long to Byte Array Convert

List of utility methods to do Long to Byte Array Convert

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Description

The list of methods to do Long to Byte Array Convert are organized into topic(s).

Method

byte[]toBytes(long value)
to Bytes 
byte[] dest = new byte[8];
toBytes(value, dest, 0);
return dest;
voidtoBytes(long value, byte[] dest, int destPos)
to Bytes 
for (int i = 0; i < 8; i++) {
    dest[i + destPos] = (byte) (value >> ((7 - i) * 8));
voidtoByteArray(long val, byte[] b, int pos)
to Byte Array 
assert (pos + 8 <= b.length);
for (int i = 0; i < 8; ++i) {
    b[pos + i] = (byte) (val & 0x00000000000000FFl);
    val = val >> 8;
voidtoByteArray(long val, int w, byte[] b, int pos)
to Byte Array 
assert (pos + 8 <= b.length);
for (int i = 0; i < w; ++i) {
    b[pos + i] = (byte) (val & 0x00000000000000FFl);
    val = val >> 8;
byte[]getByteArrayByLong(long value, int n)
get bytes by the long value. 
return getByteArrayByLong(value, n, true);
byte[]getByteArrayByLong(long value, int n, boolean isLH)
get bytes by the long value 
byte[] dest = new byte[n];
for (int i = 0; i < n; i++) {
    dest[i] = (byte) ((value >> ((isLH ? i : n - i - 1) * 8)) & 0xFF);
return dest;
byte[]getBytes(long data)
get Bytes 
byte[] bytes = new byte[8];
bytes[0] = (byte) (data & 0xff);
bytes[1] = (byte) ((data >> 8) & 0xff);
bytes[2] = (byte) ((data >> 16) & 0xff);
bytes[3] = (byte) ((data >> 24) & 0xff);
bytes[4] = (byte) ((data >> 32) & 0xff);
bytes[5] = (byte) ((data >> 40) & 0xff);
bytes[6] = (byte) ((data >> 48) & 0xff);
...
voiduint32ToByteArrayLE(long value, byte[] output, int offset)
uint To Byte Array LE 
output[offset + 0] = (byte) (0xFFL & (value >> 0));
output[offset + 1] = (byte) (0xFFL & (value >> 8));
output[offset + 2] = (byte) (0xFFL & (value >> 16));
output[offset + 3] = (byte) (0xFFL & (value >> 24));
voiduint64ToByteArrayLE(long value, byte[] output, int offset)
uint To Byte Array LE 
output[offset + 0] = (byte) (0xFFL & (value >> 0));
output[offset + 1] = (byte) (0xFFL & (value >> 8));
output[offset + 2] = (byte) (0xFFL & (value >> 16));
output[offset + 3] = (byte) (0xFFL & (value >> 24));
output[offset + 4] = (byte) (0xFFL & (value >> 32));
output[offset + 5] = (byte) (0xFFL & (value >> 40));
output[offset + 6] = (byte) (0xFFL & (value >> 48));
output[offset + 7] = (byte) (0xFFL & (value >> 56));
...
byte[]long2byteArray(final long number, final int length, final boolean swapHalfWord)
Converts a long number to a byte array Halfwords can be swapped by setting swapHalfWord=true. 
byte[] ret = new byte[length];
int pos = 0;
long tmp_number = 0;
if (length % 2 != 0 || length < 2) {
    throw new UnsupportedOperationException();
tmp_number = number;
for (pos = length - 1; pos >= 0; pos--) {
...