Posts Tagged ‘bytearray’

• By Rich

  Tags

  bytearray

  Posted in

  ActionScript3

  6 comments

  How do you extract a Sprite back out of a ByteArray?

  28th Feb 2009

  6

  I should probably post this into some AS forums (and will do so later), but I had to get this out there quickly and it’s bugging the hell out of me:

  In short, how do you extract a Sprite from a ByteArray? (or any kind of display object for that matter).

  I can write the object just fine, and read it back into a variable, but I’ll be blown if I can then convert that back into what it was originally.

  Here are my attempts so far:

  [as]
  var test:Sprite = new Sprite();
  test.graphics.beginFill(0xff0000);
  test.graphics.drawRect(0,0,64,64);
  test.graphics.endFill();

  //addChild(test); // to test, works fine

  var b:ByteArray = new ByteArray();

  trace(b.length);    //    0 bytes

  b.writeObject(test);

  trace(b.length);    //    754 bytes, so our Sprite is definitely in there

  //    Reset the pointer
  b.position = 0;

  trace(b.position);    //    0 as I’d expect

  var newTest:Sprite;
  //newTest = b.readObject() as Sprite;    //    Ends up being null
  //newTest = Sprite(b.readObject());    // Type Coercion failed error
  //trace(newTest);
  //addChild(newTest);    //    and kaboom, constant “Parameter child must be non-null.” errors 🙁

  var take2:Object = b.readObject();
  trace(take2);    // ok take2 contains an object, but how can I get the Sprite out of it?

  trace(b.position);    //    754, so it has definitely read it all
  [/as]

  Ummm someone, please help? 🙂