Android bufferedWriter.flush（）示例

我希望在android应用程序中清除一个文本文件，然后重新编写新的ArrayList。我的问题代码是

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();
                }

需要改成

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

这是：

bufferedWriter.close();

需要在之后添加

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。希望这对某人有所帮助。

尝试将异常错误消息输出到日志，并将其信息发布在此处。这将使诊断问题变得更容易。当您从数组中删除元素时，是否有什么原因使您不再使用j到i作为变量？我一运行它就注意到了这一点。谢谢我只需要确保文件现在被正确刷新。

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