触摸事件

 this.stage.addEventListener(egret.TouchEvent.TOUCH_END, this.stopMove, this);

this.stage.addEventListener(egret.TouchEvent.TOUCH_MOVE, this.onMove, this);

  _dragMc.addEventListener(egret.TouchEvent.TOUCH_BEGIN, this.startMove, this);

this._backBtn.addEventListener(egret.TouchEvent.TOUCH_TAP,this.onBackClickEvent,this);

this.addEventListener(egret.Event.ENTER_FRAME,this.onEnterFrame,this);