Android: Convert image object to bitmap does not work

Question

I am trying to convert image object to bitmap, but it return null.

image = reader.acquireLatestImage();

                        ByteBuffer buffer = image.ge         


        

Answer 1

You haven't copied bytes.You checked capacity but not copied bytes.

ByteBuffer buffer = image.getPlanes()[0].getBuffer();
byte[] bytes = new byte[buffer.remaining()];
buffer.get(bytes);
Bitmap myBitmap = BitmapFactory.decodeByteArray(bytes,0,bytes.length,null);

Answer 2

I think you're trying to decode an empty array, you just create it but never copy the image data to it.

You can try:

ByteBuffer buffer = image.getPlanes()[0].getBuffer();
byte[] bytes = buffer.array();
Bitmap myBitmap = BitmapFactory.decodeByteArray(bytes,0,bytes.length,null);

As you say it doesn't work, then we need to copy the buffer manually ... try this :)

    byte[] bytes = new byte[buffer.remaining()];
    buffer.get(bytes);
    Bitmap myBitmap = BitmapFactory.decodeByteArray(bytes,0,bytes.length,null);