有没有办法在没有Android中的Bitmap.CompressFormat类的情况下将位图转换为字节数组？如果没有，怎么样？如果可能，请告诉我如何，thanx
答案 0 :(得分：1)
这样的东西？
//b is the Bitmap
//calculate how many bytes our image consists of.
int bytes = b.getByteCount();
//or we can calculate bytes this way. Use a different value than 4 if you don't use 32bit images.
//int bytes = b.getWidth()*b.getHeight()*4;
ByteBuffer buffer = ByteBuffer.allocate(bytes); //Create a new buffer
b.copyPixelsToBuffer(buffer); //Move the byte data to the buffer
byte[] array = buffer.array(); //Get the underlying array containing the data.