打印出的动画action的target已经是设置过的了，但完全没有动画，是bug还是我的用法不对？
this.animateActions = ccs.actionTimelineCache.createAction(animatejson);
this.animateActions.startWithTarget(this);this.runAction(this.animateActions);
this.animateActions.gotoFrameAndPlay(20, 45, 20, true);