动态步长的for循环

AuditActivity.java

        /**
         * if batch> 当天的数据条数，则全部取出来
         * else if batch=1 ,则取当天的最后一条数据。
         * else 将每一天的数据按照batch均匀条数间隔取出来: 有100条   取batch条，即第49和 99 条（索引起始为0 ） ，
         */
        for (int i = 0; i < everyDayData.size(); i++) {
            if (currentBatch == 1) {
                /*根据日期 拿到对应日期的数据 */   //还需要区分不同的测点！
                List<PointData.DataBean.RowsBean> datas = everyDayData.get(pointDataDateList.get(i));
                /*遍历多个测点 */
                int size = datas.size();
                PointData.DataBean.RowsBean lastPoint = null;
                for (int point = 0; point < size; point++) {
                    PointData.DataBean.RowsBean pointBean = datas.get(point);
                    if (lastPoint == null) {
                        mPointDataList.add(pointBean);
                    }
                    if (lastPoint != null && lastPoint.getPoint_id() != pointBean.getPoint_id()) {
                        mPointDataList.add(pointBean);
                    }
                    lastPoint = pointBean;
                }

            } else if (currentBatch > dayDateList.size()) {
                mPointDataList.addAll(everyDayData.get(pointDataDateList.get(i)));
            } else {
//                 取batch条，即第49和 99 条（索引起始为0 ） ，
                int dayDateListSize = dayDateList.size();
                int step = dayDateListSize / currentBatch;// 间隔
                int start = 0;
                if (step > 0) {
                    start = step - 1;
                }
                for (int s = start; s < dayDateListSize; s += step) {
                    mPointDataList.add(everyDayData.get(pointDataDateList.get(i)).get(s));
                }

            }
        }