Yes, that's a solution. But there may be some problems: ram 、loading-time、update.

In my project, there will be many decors(10 hats、10 shoes、10 clothes ... etc). If i loading all of them in the same time, which may cause OOM. And it's hard to use small patch to update the decors(Must update all of the AnimatedGroup, not only the changed one).

I'am not familiar with skin-animations, if i want to do such replacing, what i needed to do?(replace Animated3D in AnimmatedGroup? replace MeshData and SkinData?)

I have a dog(Animated3D), i want to dress it with different decors. For example: hat、shoes、clothes and so on. And the decors should animate with the dog.

How to implement this?

There is my first ideal:

1, Build dog model and hat model.
2, Make dog-bones-animation and hat-bones-animation.
3, export dog.bones and hat.bones.
4, animate dog.bones and hat.bones.

That's workable. But i think that the hat's animation is just relying to the dog, so i want to build just an animated-dog, and a hat without animation-info(skinclips), let the hat share the skinclips with  the dog. If can do this, how? I tried, but didn't succeed:

1, In maya, build dog model and hat model, let them share the same skeleton.
2, Export dog.bones with full animations, export hat.bones with just 1 frame animations.
3, In code:
hat.replaceSkeleton(dog.getSkeleton()); 
hat.setSkinClipSequence(dog.getSkinClipSequence());

//render loop
playDogAnimation();
playHatAnimation();



2.0

Because jPCT-AE log say:

WARNING: Texture's size is 256/128, but textures should be square for OpenGL ES2.0! This may result in a black texture!


When i use 256*128(or other texture which isn't square),  all are fine, but because of the warning above, i prefer to make all textures to be square to avoid potential error.

Should I use (2^n * 2^m) or (2^n * 2^n)?

And to convert 512*128 -> 512*512, i won't use Bitmap.scale()(or other similar methods), i just use a file of 512*512 instead.

If i set defaultToKeepPixels=false; the texture in vm will be free after uploaded to gpu.

And you don't suggest doing like this, because if the OpenGL context change, there will some bad things happen.

Could you explain more? When and how will the OpenGL context change? if  defaultToKeepPixels==false and OpenGL conext changed, what will happen?

First the log said:

09-17 18:51:48.890: W/System.err(4142): java.lang.ClassNotFoundException: raft.jpct.bones.MeshData
09-17 18:51:48.890: W/System.err(4142):    at java.lang.Class.classForName(Native Method)
09-17 18:51:48.890: W/System.err(4142):    at java.lang.Class.forName(Class.java:234)
09-17 18:51:48.890: W/System.err(4142):    at java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:2564)
09-17 18:51:48.890: W/System.err(4142):    at java.io.ObjectInputStream.readNewClassDesc(ObjectInputStream.java:1823)
09-17 18:51:48.890: W/System.err(4142):    at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:811)
09-17 18:51:48.890: W/System.err(4142):    at java.io.ObjectInputStream.readNewObject(ObjectInputStream.java:2039)
09-17 18:51:48.890: W/System.err(4142):    at java.io.ObjectInputStream.readNonPrimitiveContent(ObjectInputStream.java:916)
09-17 18:51:48.890: W/System.err(4142):    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:2262)
09-17 18:51:48.890: W/System.err(4142):    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:2217)
09-17 18:51:48.890: W/System.err(4142):    at b.a.a.a.<init>(Unknown Source)




Then i add "-keep  class raft.jpct.bones.MeshData" in progurad.cfg, the error changed to:

09-17 18:54:13.400: W/System.err(4211): java.io.InvalidClassException: raft.jpct.bones.MeshData; Incompatible class (SUID): raft.jpct.bones.MeshData: static final long serialVersionUID =1L; but expected raft.jpct.bones.MeshData: static final long serialVersionUID =7143378492676895671L;
09-17 18:54:13.400: W/System.err(4211):    at java.io.ObjectInputStream.verifyAndInit(ObjectInputStream.java:2697)
09-17 18:54:13.400: W/System.err(4211):    at java.io.ObjectInputStream.readNewClassDesc(ObjectInputStream.java:1825)
09-17 18:54:13.400: W/System.err(4211):    at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:811)
09-17 18:54:13.400: W/System.err(4211):    at java.io.ObjectInputStream.readNewObject(ObjectInputStream.java:2039)
09-17 18:54:13.400: W/System.err(4211):    at java.io.ObjectInputStream.readNonPrimitiveContent(ObjectInputStream.java:916)
09-17 18:54:13.400: W/System.err(4211):    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:2262)
09-17 18:54:13.400: W/System.err(4211):    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:2217)
09-17 18:54:13.400: W/System.err(4211):    at raft.jpct.bones.a.<init>(Unknown Source)
09-17 18:54:13.400: W/System.err(4211):    at raft.jpct.bones.c.<init>(Unknown Source)
09-17 18:54:13.400: W/System.err(4211):    at raft.jpct.bones.d.a(Unknown Source)
09-17 18:54:13.400: W/System.err(4211):    at com.zwenyu.k.g.b(Unknown Source)
09-17 18:54:13.400: W/System.err(4211):    at com.zwenyu.i.d.f(Unknown Source)
09-17 18:54:13.400: W/System.err(4211):    at com.zwenyu.i.d.d(Unknown Source)
09-17 18:54:13.400: W/System.err(4211):    at com.zwenyu.i.d.b(Unknown Source)
09-17 18:54:13.400: W/System.err(4211):    at com.zwenyu.i.d.a(Unknown Source)
09-17 18:54:13.400: W/System.err(4211):    at com.zwenyu.i.d.doInBackground(Unknown Source)
09-17 18:54:13.400: W/System.err(4211):    at android.os.AsyncTask$2.call(AsyncTask.java:185)
09-17 18:54:13.400: W/System.err(4211):    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:306)
09-17 18:54:13.400: W/System.err(4211):    at java.util.concurrent.FutureTask.run(FutureTask.java:138)
09-17 18:54:13.400: W/System.err(4211):    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1088)
09-17 18:54:13.400: W/System.err(4211):    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:581)
09-17 18:54:13.400: W/System.err(4211):    at java.lang.Thread.run(Thread.java:1019)
09-17 18:54:13.400: W/dalvikvm(4211): threadid=11: thread exiting with uncaught exception (group=0x401f8560)

I use android-proguard to Obfuscate my code, and ClassNotFoundException happened when  loading .bones. All are ok before obfuscated.

Codes:
//loading .ser, all are ok
 obj = Loader.loadSerializedObject(in);

//loading .bones, throw ClassNotFoundException :
    AnimatedGroup group = BonesIO.loadGroup(activity.getAssets().open(assetFileName));
Is this caused by Serializable obj? Why loading .ser is ok but .bones is not? Any main difference between them?

For some reason, i need obscure my code by using Proguard.

And when i do this, there was an error:

[2012-09-17 11:26:12 - AndroidDog] Proguard returned with error code 1. See console
[2012-09-17 11:26:12 - AndroidDog] Warning: com.threed.jpct.BufferUtilNative: can't find referenced class com.badlogic.gdx.utils.BufferUtils
[2012-09-17 11:26:12 - AndroidDog] Warning: com.threed.jpct.BufferUtilNative: can't find referenced class com.badlogic.gdx.utils.BufferUtils
[2012-09-17 11:26:12 - AndroidDog]       You should check if you need to specify additional program jars.
[2012-09-17 11:26:12 - AndroidDog] Warning: there were 2 unresolved references to classes or interfaces.
[2012-09-17 11:26:12 - AndroidDog]          You may need to specify additional library jars (using '-libraryjars').
[2012-09-17 11:26:12 - AndroidDog] java.io.IOException: Please correct the above warnings first.
[2012-09-17 11:26:12 - AndroidDog]    at proguard.Initializer.execute(Initializer.java:321)
[2012-09-17 11:26:12 - AndroidDog]    at proguard.ProGuard.initialize(ProGuard.java:211)
[2012-09-17 11:26:12 - AndroidDog]    at proguard.ProGuard.execute(ProGuard.java:86)
[2012-09-17 11:26:12 - AndroidDog]    at proguard.ProGuard.main(ProGuard.java:492)

Seems jPCT-AE.jar referenced the class  com.badlogic.gdx.utils.BufferUtils, does this class be useful? If so, how to import it?

I don't want to hold the texture of the dog in memory(both vm and gpu) all the time because of the limited memory. I want to free the texture of the dog when switching to some scenes which don't need the dog.

But i need hold the object of dogModel(Animated3D) in memory all the time(by static reference)  because of the long model-loading time(So i want to just loading once).

So, if the texture name of my dog is always the same, and if i use TextureManager.replaceTextures(), which means i need hold the texture of the dog in memory all the time.

And if i free the texture in some situation,  then create it again later, dog.setTexture(theSameName) will cause an problem which i described above.

Any suggestion? Could i clear the texture cache of the dog by some methods?