(solved) QByteArray vs ByteBuffer (Java)

[ckvsoft]

Please can anyone help me.

how to i but a qlonglong to a ByteArray with this Order

Example:

In Java:

Long n = 60243;
ByteBuffer byteBufferData = ByteBuffer.allocate(16);
byteBufferData.putLong(turnoverCounter);

Long n = 60243;
ByteBuffer byteBufferData = ByteBuffer.allocate(16);
byteBufferData.putLong(turnoverCounter);

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I got this Array "0 0 0 0 0 0 -21 83 0 0 0 0 0 0 0 0"
I only need the first 8 Bytes "0 0 0 0 0 0 -21 83"

In Cpp (Qt5):

qlonglong n = 60243;
QByteArray ba;
for(int i = 0; i != sizeof(n); ++i)
{
    ba.append((char)((n & (0xFF << (i*8))) >> (i*8)));
}

qlonglong n = 60243;
QByteArray ba;
for(int i = 0; i != sizeof(n); ++i)
{
    ba.append((char)((n & (0xFF << (i*8))) >> (i*8)));
}

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I got the right length but in other order;
I got "83 -21 0 0 0 0 0 0"

How can i reverse this? can i put this in the reverse order in the loop? Or is this any problem?


Thx Chris