cocos 点击遍历播放该骨骼所有动画

cc.Class({
    extends: cc.Component,

    properties: {
        _musicVolume: 1.0,
        _playEffect: [],
        _switchEffect: true
    },

    // LIFE-CYCLE CALLBACKS:

    onLoad () {
        this.arr = new Array();
        this.count = 0;
        this.node.on('touchstart',  (event) => {
            // 骨骼动画复制
            this.donghua = this.node.getChildByName("touch").getComponent(dragonBones.ArmatureDisplay);
            // 注册监听事件
            this.donghua.addEventListener(dragonBones.EventObject.COMPLETE, this._animationEventHandler, this);
            // 播放第一个动画，动画结束时调监听事件
            this.donghua.playAnimation("walk",1);
            // 获取该骨骼所有动画名称
            this.arr = this.donghua.getAnimationNames("armatureName");
            cc.log("动画名称：" + this.arr);

        });

    },

    _animationEventHandler: function(event) {
        cc.log("动画开始播放 = " + this.arr[this.count]);
        this.donghua.playAnimation(this.arr[this.count],1);
        this.donghua.addEventListener(dragonBones.EventObject.COMPLETE, this._animationEventHandler, this);
        this.count++;
        if (this.count>this.arr.length-1)
        {
            cc.log("动画已经全部播放！");
            // 播放结束以后，删除事件
            this.donghua.removeEventListener(dragonBones.EventObject.COMPLETE, this._animationEventHandler, this);
            return ;
        }
    },

    
    start () {

    },


    // update (dt) {},
});