cocos2d的schedule中让精灵运行animate，但回调是不会播放动画，在unschedule后动画才会播放，怎么回事

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cocos2d的schedule中让精灵运行animate，但回调是不会播放动画，在unschedule后动画才会播放，怎么回事

void LoadingScene::toRight(float dt)
{
	CCAnimation *animation = CCAnimation::create();
	for (int i = 0; i < 4; i++)
	{
		CCSpriteFrame *frame = CCSpriteFrame::create("role.png",
				CCRectMake(32 * i, 96, 32, 48));
		animation->addSpriteFrame(frame);
	}
	CCSpriteFrame *endFrame = CCSpriteFrame::create("role.png",
			CCRectMake(0, 96, 32, 48));
	animation->addSpriteFrame(endFrame);
	animation->setDelayPerUnit(0.08f);
	CCAnimate *animate = CCAnimate::create(animation);

	CCAction *move = CCMoveBy::create(0.5, ccp(5, 0));
	//CCAction *spawn = CCSpawn::create(animate, move, NULL);

	role->runAction(animate);
	CCLog("toright...");
	if (role->getPositionX() < 700)
	{
		//role->runAction(move);
	}
	else
	{
		//this->bgBack();
	}

}