如何在 Java 中将 libGDX 的纹理转换为字节数组并再次返回

Question

So I'm working on a small multiplayer game using libgdx and java. I'm using datagram sockets and datagram packets to send messages between clients. In order to send data I need to convert it into a byte array. I've been searching to find a way to convert libgdx Textures to byte array but can't find the solution. I can't make the class implement Serializable since I have no access to the class.

I would greatly appreciate any help to fix my problem. Thanks in advance!

Answer 1

You could convert your Texture into a Pixmap with the following snippet from this answer :

Texture texture = textureRegion.getTexture();
if (!texture.getTextureData().isPrepared()) {
    texture.getTextureData().prepare();
}
Pixmap pixmap = texture.getTextureData().consumePixmap();

When you have got the Pixmap you can call the getPixels() method which will return a ByteBuffer , that includes the byte array of pixel data. You can read the raw data into a byte[] by calling the get(byte[]) method on the ByteBuffer :

ByteBuffer byteBuffer = pixmap.getPixels();
byte[] pixelDataByteArray = new byte[byteBuffer.remaining()];
byteBuffer.get(pixelDataByteArray);

To convert the byte[] back to a Texture you can use the constructors of Pixmap and Texture like this:

Texture fromByteArray = new Texture(new Pixmap(pixelDataByteArray, 0, pixelDataByteArray.length));