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我正在寻找清除 android 应用程序中的文本文件，然后将其重写为新的 ArrayList。我有问题的代码是

try{
                    bufferedWriter = new BufferedWriter(new OutputStreamWriter(openFileOutput("Account.txt", MODE_APPEND)));
                    bufferedWriter.flush();
                    for( int j = 0; j < ((ArrayHandler)getApplicationContext()).info.size(); j++)
                    {
                        if( text.equalsIgnoreCase(((ArrayHandler)getApplicationContext()).info.get(j).getAccountName()))
                        {
                            ((ArrayHandler)getApplicationContext()).info.remove(j);

                            for( int k = 0; k < ((ArrayHandler)getApplicationContext()).info.size(); k++)
                            {
                                String account = ((ArrayHandler)getApplicationContext()).info.get(k).getAccountName();
                                String name = ((ArrayHandler)getApplicationContext()).info.get(k).getUserName();
                                String pass = ((ArrayHandler)getApplicationContext()).info.get(k).getPassword();

                                writeFileToStorage(account, name, pass);
                            }
                        }
                    }
                }
                catch(Exception err)
                {
                    Toast.makeText(getBaseContext(), "Cannot flush file", Toast.LENGTH_SHORT).show();
                }

运行此代码时，我总是得到 catch 子句。该文件被正确读入，但如果用户从 ArrayList 中删除某些内容，则该文件需要删除与 ArrayList 对应的项目。我的问题是，如何正确地写这个？

编辑 有问题的代码有效。但是，需要进行一些更改。这个：

bufferedWriter = new BufferedWriter(new OutputStreamWriter(openFileOutput("Account.txt", MODE_APPEND)));

需要改为

bufferedWriter = new BufferedWriter(new OutputStreamWriter(openFileOutput("Account.txt", MODE_PRIVATE)));

和这个：

bufferedWriter.close();

之后需要添加

bufferedWriter = new BufferedWriter(new OutputStreamWriter(openFileOutput("Account.txt", MODE_PRIVATE)));
bufferedWriter.flush();

看起来像这样：

bufferedWriter = new BufferedWriter(new OutputStreamWriter(openFileOutput("Account.txt", MODE_PRIVATE)));
bufferedWriter.flush();
bufferedWriter.close();

谢谢。希望这可以帮助某人。

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