bytebuffer – IT Nursery

What is the use of ByteBuffer in Java? [closed]

May 28, 2022 by IT Nursery

Closed. This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 7 years ago. Improve this question What are example applications for a ByteBuffer in Java? Please list any example scenarios where … Read more

converting Java bitmap to byte array

May 16, 2022 by IT Nursery

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… … Read more