Question

我尝试在android中读取包含80k单元格的xls文件，但是出现以下错误消息：FATAL EXCEPTION：main java.lang.OutOfMemoryError

为了成功读取xls文件，我该怎么做？

提前致谢， Anestis

 public class ReadExcelFile
    {
      ArrayList<String> list = new ArrayList<String>();

      public ReadExcelFile()
      {

          Workbook workbook1 = null;
          WorkbookSettings s = null;
          InputStream excelContent = null;
      try {
          excelContent = this.getClass().getResourceAsStream("/com/product/sopho/lexiko.xls");
          s = new WorkbookSettings();
          s.setUseTemporaryFileDuringWrite(true);
          workbook1 = Workbook.getWorkbook(excelContent,s);
          Sheet sheet = workbook1.getSheet(0);       
          ExcelMap(sheet);
          ExcelKeyList(sheet);

      } catch(Exception e) {

      } finally {

          if(workbook1 != null) {
              workbook1.close();
          }
          if(excelContent != null) {
              try {
                excelContent.close();
            } catch (IOException ex) {}
          }

      }
  }



  private void ExcelKeyList(Sheet sheet)
  {
      for (int i=0; i<80001; i++)
      {
          list.add(sheet.getCell(0,i).getContents());
        }
   }
   public ArrayList<String> getExcelKeyList()
   {
       return list;
    }

}

Answer 1

您的手机/平板电脑容量超过了。只是尝试以块的形式加载单元格，如下所示：

        public class ReadExcelFile  {

            ArrayList<String> list = new ArrayList<String>();
            Workbook myWorkBook;

            // open but not close, leave it open

            public void OpenExcelFile()
            {

                WorkbookSettings s = null;
                InputStream excelContent = null;
               try {
                    excelContent = this.getClass().getResourceAsStream("/com/product/sopho/lexiko.xls");
                    s = new WorkbookSettings();
                    s.setUseTemporaryFileDuringWrite(true);
                    myWorkbook = Workbook.getWorkbook(excelContent,s);

                } catch(Exception e) {

                } 

                // we leave it open

            }

            // close when you are done

            public void closeExcelFile() {
                if(myWorkBook != null) {
                    myWorkBook.close();
                }
            }

            // Once opened, get chunks calling ExcelKeyList(0,0,1000) .... etc

            private ArrayList<String> ExcelKeyList(int sheet,int startRow, int endRow)
            {
                Sheet sheet = myWorkBook.getSheet(sheet);       

                ExcelMap(sheet);
                ExcelKeyList(sheet);

                list.clear();

                for (int i=startRow; i<endRow; i++)
                {
                    list.add(sheet.getCell(0,i).getContents());
                }
                return list;
             }

             public ArrayList<String> getExcelKeyList()
             {
                 return list;
              }

        }

你必须在手机爆炸之前找出推荐的块大小。

如何在android中加载一个大的xls文件？

1 个答案: