java - 正确处理纹理

Question

我将纹理映射到球体，当我倾斜设备时，应该将另一个纹理映射到球体，并且应该从内存中删除前一个纹理。

//Handles the texture
currentSphereTexture = new Texture("sphereTexture", R.drawable.rsz_01);
        TextureManager.getInstance().addTexture(currentSphereTexture);

//Creation of a sphere geometry
currentSphereMaterial = new Material();
currentSphereMaterial.addTexture(currentSphereTexture);
currentSphereMaterial.setColorInfluence(0);

//Create the mesh (actual object)
currentSphere.setMaterial(currentSphereMaterial);

我用新的纹理更新球体：

currentSphereMaterial.addTexture(texture);
currentSphereMaterial.removeTexture(currentSphereTexture);

但最终它仍然会导致 Out Of Memory 异常。我怎样才能正确释放纹理，以便它一次只在球体上投射一个纹理？