Android byte array batches

Question

I am sending image through Bluetooth pro-grammatically. When i send image as Byte array at the sending side the byte array length is = 83402 and at the receiving side i am getting byte bacthes of 1024.

I want to combine these 1024 batches into single byte array so that i again convert it as an image.

Here in the msg.obj i get 1024 bacth of byte array.

case MESSAGE_READ:

 byte[] readBuf = (byte[]) msg.obj;

 Bitmap bmp=BitmapFactory.decodeByteArray(readBuf,0,readBuf.length);

After that i am also getting this warning..

"Default buffer size used in BufferedOutputStream constructor. It would be better to be explicit if an 8k buffer is required"

any help would be appreciated.

Thanks

Answer 1

Should be roughly something like this:

byte[] readBuf = new byte[83402]; // this array will hold the bytes for the image, this value better be not hardcoded in your code

int start = 0;
while(/*read 1024 byte packets...*/) {
    readBuf.copyOfRange((byte[]) msg.obj, start, start + 1024); // copy received 1024 bytes
    start += 1024; //increment so that we don't overwrite previous bytes
}

/*After everything is read...*/
Bitmap bmp=BitmapFactory.decodeByteArray(readBuf,0,readBuf.length);