public void setSpanSizeLookup(SpanSizeLookup spanSizeLookup) {
        this.mSpanSizeLookup = spanSizeLookup;
    }
@param spanSizeLookup instance to be used to query number of spans occupied by each item
common/src/main/java/com/sxjs/common/base/baseadapter/BaseQuickAdapter.java