访问嵌套外的ArrayList If Scala中的阻塞

Question

我有以下代码： -

 var ArrayStop = new ArrayList[imeistoppage]()
 val listings = rddStopCalculate.zipWithIndex().map(p => {
        if (p._2 == 0) {
          imei = p._1.imei
          lat = p._1.latitude
          long = p._1.longitude
          gpsdt = p._1.gpsdt
        } else if (p._2 > 0 && p._2 != lastindex) {
          if (p._1.imei.equals(imei) && p._1.latitude == lat && p._1.longitude == long) {
            flag += 1
            newgpsdt = p._1.gpsdt
          } else {
            if (flag > 0) {
              timeDiff = newgpsdt.getTime() - gpsdt.getTime()
              if (timeDiff > 60000) {
                ArrayStop.add(imeistoppage(p._1.imei, lat, long, timeDiff))
              }
              flag = 0
            }
            imei = p._1.imei
            lat = p._1.latitude
            long = p._1.longitude
            gpsdt = p._1.gpsdt
          }
        } else {
          if (p._1.imei.equals(imei) && p._1.latitude == lat && p._1.longitude == long) {
            flag += 1
            newgpsdt = p._1.gpsdt
          }
          if (flag > 0) {
            timeDiff = newgpsdt.getTime() - gpsdt.getTime()
            if (timeDiff > 60000) {
              ArrayStop.add(imeistoppage(p._1.imei, lat, long, timeDiff))
            }
            flag = 0
          }
        }
        ArrayStop
      }).collect()

      val returnList = listings(listings.length - 1)
      val tempCollection = returnList.asScala
      val tempRDD = sc.parallelize(tempCollection)
      tempRDD.saveToCassandra("db", "table", SomeColumns("imei", "lat", "long", "duration"))

正如我们在上面的代码中看到的那样，我实际上只是将数据添加到ArrayStop以获取特定的IF条件，我希望在rdd循环之外访问它但我无法这样做所以我创建了一个变量“listing”到存储实际占用所有行的数据，而我只想要在ArrayStop中添加的那些条目。那么什么是在嵌套的If-else块之外引入任何数组的最佳方法。这与此问题不同     Scala spark, listbuffer is empty 谢谢，