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[]long2bytesBE(long val, byte[] b, int off)
longbytes BE 
b[off] = (byte) (val >>> 56);
b[off + 1] = (byte) (val >>> 48);
b[off + 2] = (byte) (val >>> 40);
b[off + 3] = (byte) (val >>> 32);
b[off + 4] = (byte) (val >>> 24);
b[off + 5] = (byte) (val >>> 16);
b[off + 6] = (byte) (val >>> 8);
b[off + 7] = (byte) val;
...
byte[]long2bytesLE(long val, byte[] b, int off)
longbytes LE 
b[off] = (byte) val;
b[off + 1] = (byte) (val >>> 8);
b[off + 2] = (byte) (val >>> 16);
b[off + 3] = (byte) (val >>> 24);
b[off + 4] = (byte) (val >>> 32);
b[off + 5] = (byte) (val >>> 40);
b[off + 6] = (byte) (val >>> 48);
b[off + 7] = (byte) (val >>> 56);
...
intlongFitsIn(final long value)
Check how many bytes are required to store value. 
if (value < 0) {
    return 8;
if (value < (1l << 4 * 8)) {
    if (value < (1l << 2 * 8)) {
        if (value < (1l << 1 * 8)) {
            return 1;
        return 2;
    if (value < (1l << 3 * 8)) {
        return 3;
    return 4;
if (value < (1l << 6 * 8)) {
    if (value < (1l << 5 * 8)) {
        return 5;
    return 6;
if (value < (1l << 7 * 8)) {
    return 7;
return 8;
byte[]longToByteArray(long a)
long To Byte Array 
byte[] bArray = new byte[8];
for (int i = 0; i < bArray.length; i++) {
    bArray[i] = new Long(a & 0XFF).byteValue();
    a >>= 8;
return bArray;
byte[]longToByteArray(long l)
long To Byte Array 
return ByteBuffer.allocate(8).putLong(l).array();
byte[]longToByteArray(long value)
long To Byte Array 
return new byte[] { (byte) (value >>> 56), (byte) (value >>> 48),
        (byte) (value >>> 40), (byte) (value >>> 32),
        (byte) (value >>> 24), (byte) (value >>> 16),
        (byte) (value >>> 8), (byte) value };
byte[]longToBytes(long l)
Returns a byte array containing the bytes of the given long in big endian order. 
return new byte[] { (byte) (l >> 56), (byte) (l >> 48),
        (byte) (l >> 40), (byte) (l >> 32), (byte) (l >> 24),
        (byte) (l >> 16 & 0xFF), (byte) (l >> 8 & 0xFF),
        (byte) (l & 0xFF) };
byte[]longToBytes(long x)
long To Bytes 
buffer.clear();
buffer.putLong(0, x);
return buffer.array();
byte[]longs2bytesBE(long[] val)
longsbytes BE 
if (val == null)
    return null;
byte[] b = new byte[val.length << 3];
for (int i = 0; i < val.length; i++)
    long2bytesBE(val[i], b, i << 3);
return b;
byte[]longs2bytesLE(long[] val)
longsbytes LE 
if (val == null)
    return null;
byte[] b = new byte[val.length << 2];
for (int i = 0; i < val.length; i++)
    long2bytesLE(val[i], b, i << 2);
return b;