Entity Modifiers:

Entity Modifiers are helpful classes that can brings some 'effects' for our entities, such as rotating, scaling, alpha changing and many more. You should explore org.andengine.entity.modifier package, so most likely you will find something useful.

1. Registering Entity Modifier:

yourEntity.registerEntityModifier(new RotationModifier(3, 0, 360));

• modifier duration - 3 seconds in this example
• from rotation - in our example 0 degrees 
• to rotation - in our example 360 degrees - full rotation.

2. Endless modifiers:

yourEntity.registerEntityModifier(new LoopEntityModifier(yourModifier))));

3. Modifier listeners:

RotationModifier yourModifier = new RotationModifier(3, 0, 360)
{
        @Override
        protected void onModifierStarted(IEntity pItem)
        {
                super.onModifierStarted(pItem);
                // Your action after starting modifier
        }
       
        @Override
        protected void onModifierFinished(IEntity pItem)
        {
                super.onModifierFinished(pItem);
                // Your action after finishing modifier
        }
};
 
yourEntity.registerEntityModifier(yourModifier);