在现有的csv文件中添加新列

Question

有人可以帮助我如何在特定行的末尾插入新值吗？我想为每个标记保存或错误的状态插入一个值。当我从对话框中单击特定按钮时，应插入以下值：已保存或不正确。

这是我的CSV：

   1,45.66680458,25.60458787
   2,45.66672655,25.6047773
   3,45.66670734,25.60465392

当我写的时候应该怎样：

   1,45.66680458,25.60458787,salvat
   2,45.66672655,25.6047773,salvat
   3,45.66670734,25.60465392,gresit

状态为“保存”和“不正确”的更新的工作代码：

   bt_nu.setOnClickListener(new View.OnClickListener() {
                                 @Override
                                 public void onClick(View v) {

                                      marker.setIcon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_GREEN));
                                      dialog.dismiss();
                                     String salvat = "salvat";


                                     BufferedReader br=null;
                                     BufferedWriter bw=null;
                                     final String lineSep=System.getProperty("line.separator");

                                     try {
                                         File file = new File(getExternalFilesDir(null), "fisier.csv");
                                         File file2 = new File(getExternalFilesDir(null), "fisier1.csv");//so the


                                         br = new BufferedReader(new InputStreamReader(new FileInputStream(file))) ;
                                         bw = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file2)));
                                         String line = null;

                                         for ( line = br.readLine(); line != null; line = br.readLine())
                                         {
                                             String[] RowData = line.split(",");
                                             Double latitudine = Double.valueOf(RowData[1]);
                                             Double longitudine = Double.valueOf(RowData[2]);
                                             if (latitudine == coords.latitude && longitudine == coords.longitude ) {
                                                 String addedColumn = String.valueOf(salvat);
                                                 bw.write(line + "," + addedColumn +lineSep);
                                             }
                                             else {
                                                 bw.write(line +  lineSep);
                                             }
                                             file2.renameTo(file);
                                         }

                                     }catch(Exception e){
                                         System.out.println(e);
                                     }finally  {
                                         if(br!=null) {
                                             try {
                                                 br.close();
                                             } catch (IOException e) {
                                                 e.printStackTrace();
                                             }
                                         }
                                         if(bw!=null) {
                                             try {
                                                 bw.close();
                                             } catch (IOException e) {
                                                 e.printStackTrace();
                                             }
                                         }
                                     }
                                     }
                                 }


    );
    bt_gresit.setOnClickListener(new View.OnClickListener() {
                                 @Override
                                 public void onClick(View v) {

                                     marker.setIcon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_BLUE));
                                     dialog.dismiss();
                                     String gresit = "gresit";

                                     BufferedReader br=null;
                                     BufferedWriter bw=null;
                                     final String lineSep=System.getProperty("line.separator");

                                     try {
                                         File file = new File(getExternalFilesDir(null), "fisier.csv");
                                         File file2 = new File(getExternalFilesDir(null), "fisier1.csv");//so the


                                         br = new BufferedReader(new InputStreamReader(new FileInputStream(file))) ;
                                         bw = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file2)));
                                         String line = null;

                                         for ( line = br.readLine(); line != null; line = br.readLine())
                                         {
                                             String[] RowData = line.split(",");
                                             Double latitudine = Double.valueOf(RowData[1]);
                                             Double longitudine = Double.valueOf(RowData[2]);
                                             if (latitudine == coords.latitude && longitudine == coords.longitude ) {
                                                 String addedColumn = String.valueOf(gresit);
                                                 bw.write(line + "," + addedColumn+lineSep);

                                             }
                                             else {
                                                 bw.write(line + lineSep);
                                             }
                                             file2.renameTo(file);
                                         }

                                     }catch(Exception e){
                                         System.out.println(e);
                                     }finally  {
                                         if(br!=null) {
                                             try {
                                                 br.close();
                                             } catch (IOException e) {
                                                 e.printStackTrace();
                                             }
                                         }
                                         if(bw!=null) {
                                             try {
                                                 bw.close();
                                             } catch (IOException e) {
                                                 e.printStackTrace();
                                             }
                                         }
                                     }

                                 }

                                 }