converting Java bitmap to byte array

by 
  Bitmap bmp   = intent.getExtras().get("data");
  int size     = bmp.getRowBytes() * bmp.getHeight();
  ByteBuffer b = ByteBuffer.allocate(size);

  bmp.copyPixelsToBuffer(b);

  byte[] bytes = new byte[size];

  try {
     b.get(bytes, 0, bytes.length);
  } catch (BufferUnderflowException e) {
     // always happens
  }
  // do something with byte[]

When I look at the buffer after the call to copyPixelsToBuffer the bytes are all 0… The bitmap returned from the camera is immutable… but that shouldn’t matter since it’s doing a copy.

What could be wrong with this code?

10 Answers
10

Leave a Comment