追加到文件的android

问题描述

嘿，我需要添加到我的文件，但它不能正常工作，它使覆盖文件，任何人都可以请告诉我什么是错的：

hey there, i need to append to my file but it is not working, it keeps overwriting the file, can anyone please tell me what is wrong:

  public void generateNoteOnSD(String sBody){

        try
        {
            File root = new File(Environment.getExternalStorageDirectory(), "AdidasParticipants");

            if (!root.exists()) {
                root.mkdirs();

            }

            File gpxfile = new File(root, "participants.txt");

            BufferedWriter bW;

            bW = new BufferedWriter(new FileWriter(gpxfile));
            bW.write(sBody);
            bW.newLine();
            bW.flush();
            bW.close();
            //Toast.makeText(mContext, "Tus datos han sido guardados", Toast.LENGTH_SHORT).show();
        }
        catch(IOException e)
        {
             e.printStackTrace();
          //   importError = e.getMessage();
            // iError();
        }
       }

在此先感谢。

Thanks in advance.

推荐答案

您可以通过更改中可以分配线路修复它的的BufferedWriter ：

You can fix it by changing the line where you assign the BufferedWriter:

bW = new BufferedWriter(new FileWriter(gpxfile, true));

当您打开使用的FileWriter 的构造函数，只需要在文件中的文件，它将覆盖什么previously的文件中。直供第二个参数为真通知的FileWriter 要追加到它的结束。

When you open a file using the FileWriter constructor that only takes in a File, it will overwrite what was previously in the file. Supplying the second parameter as true tells the FileWriter that you want to append to the end of it.

这篇关于追加到文件的android的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！