scroller,,list里面滚动到最后，，再添加10条数据

class ScrollerPosition extends eui.UILayer{
    private scroller:eui.Scroller;
    public listArray:Array<number> = [];
    constructor(){
        super();
        //创建一个列表
        var list = new eui.List();
        this.listArray = [1,2,3,4,5,6,7];
        list.dataProvider = new eui.ArrayCollection(this.listArray);
        //创建一个scroller
        var scroller = new eui.Scroller();
        scroller.height = 160;
        scroller.viewport = list;
        this.addChild(scroller);
        this.scroller = scroller;

        //https://developer.egret.com/cn/article/index/id/611
        //需要在scroller添加到舞台上面之后再访问verticalScrollBar
        // scroller.verticalScrollBar.autoVisibility = false;
        // scroller.verticalScrollBar.visible = false;


        //创建一个按钮，点击后改变Scroller被动的位置
        var btn = new eui.Button();
        btn.x = 200;
        this.addChild(btn);
        btn.addEventListener(egret.TouchEvent.TOUCH_TAP,this.moveScroller,this);
    }
    protected createChildren(){
        //初始化后改变被动的位置
        this.scroller.viewport.validateNow();
        this.scroller.viewport.scrollV = 40;
    }

    private moveScroller():void{
        //点击按钮后改变被动的位置
        var sc = this.scroller;
        sc.viewport.scrollV += 10;
        if((sc.viewport.scrollV + screen.height) > sc.viewport.contentHeight){
            console.log("滚动到底部");
            this.listArray.push(12,23,33,43,35,63,37);
        }
        //停止正在被动的动画
        sc.stopAnimation();

    }

}