This sub will skip N bytes from the stream. Usage example: you have an InputStream and you don't want the first 100 bytes.
It will skip the N bytes exactly unless there are less than N bytes in the stream. It returns the actual number of bytes skipped.
B4X:
'Returns the number of bytes skipped
Sub SkipNBytes (Input As InputStream, N As Int) As Int
Dim buffer(Min(N, 8000)) As Byte
Dim count As Int
Do While count < N
Dim read As Int = Input.ReadBytes(buffer, 0, Min(buffer.Length, N - count))
If read = -1 Then Return count
count = count + read
Loop
Return count
End Sub
It will skip the N bytes exactly unless there are less than N bytes in the stream. It returns the actual number of bytes skipped.