cocos-js时间选择

目的：需要根据玩家自主选择时间来展示界面

思路：

1、先用CocosStudio创建一个ScrollView，如果需要分别选择年、月、日、小时、分钟 则创建对应个数的ScrollView，如下图：

2、在对应的ScrollView里创建Text，添加到对应的ScrollView里，如下，列举一个年的例子，其他类似：

this.yearScroller = this.getChildFromRoot("yearScroller");

this.initTimeSelect(this._curMounth,this.monthScroller,this.dateScroller,0,this.yearScroller,this.timeSroller);

initTimeSelect:function (monthNum,monthSelect,daySelect,monthIndex,yearSelect,timeSelect) {

    var now = new Date();

    if(yearSelect){
        yearSelect.setInnerContainerSize(cc.size(yearSelect.width,(this._maxYear + 2) * this._listItemHeight));
        yearSelect.setInertiaScrollEnabled(false);
        yearSelect.addTouchEventListener(this.onTouch.bind(this));
        yearSelect.selectIndex = 0;
        for(var i = 0; i < this._maxYear; i++){
            var time = new Date();
            time.setFullYear(now.getFullYear() + i);
            var text = new ccui.Text();
            text.setFontName(dt.FontConfig.Droid_Sans);
            text.setFontSize(30);
            text.setTextColor(cc.color("#7a7299"));
            text.height = this._listItemHeight;
            text.width = 120;
            text.x = yearSelect.width/2 - 30;
            text.y = 5 + (1 + i) * this._listItemHeight;
            text.setAnchorPoint(cc.p(0,0));
            var yearStr = time.getFullYear();
            text.setString(yearStr);
            yearSelect.addChild(text);
        }
        yearSelect.setInnerContainerPosition(cc.p(0,0));
    }，

onTouch:function (scrollView,event) {
    if(event == ccui.Widget.TOUCH_ENDED || event == ccui.Widget.TOUCH_CANCELED){
        var currentY = -scrollView.getInnerContainerPosition().y;
        var index = Math.floor((currentY / this._listItemHeight));
        if(currentY - index * this._listItemHeight > 20){
            index += 1;
        }

        cc.log(currentY + "--" + index + "--" + scrollView.getInnerContainerSize().height);
        scrollView.selectIndex = index;
        var minY = scrollView.height - scrollView.getInnerContainerSize().height;
        var h = - minY;
        var percentage = (-index * this._listItemHeight - minY) * 100 / h;
        scrollView.scrollToPercentVertical(percentage,0.2,false);
    }
},

最终效果如下图：