Question

您好我通过将String ArrayList写入文件和阅读来解决同样的问题。

这是我的写作代码

File SettingsPath = getFilesDir();
    String strSettingsPath = SettingsPath.toString() + "/settings.txt";
    File file = new File (strSettingsPath);
    if (!file.exists()) {

        File removeFile = new File(strSettingsPath.toString());
        boolean deleted = removeFile.delete();

    }

    try {

        FileOutputStream fos =
                new FileOutputStream(
                        new File(strSettingsPath));

        ObjectOutputStream os = new ObjectOutputStream(fos);
        os.writeObject(this.strSettings);
        os.close();
        Log.v("","File has been written");
    } catch(Exception ex) {
        ex.printStackTrace();


    }

这是阅读

public void reader(View v) throws FileNotFoundException {
    File SettingsPath = getFilesDir();
    String strSettingsPath = SettingsPath.toString() + "/settings.txt";
    List<String> Settings = new ArrayList<String>();
    BufferedReader readerL = new BufferedReader(new FileReader(strSettingsPath));
    String line;
   try{
       //line = readerL.readLine();
       while ((line = readerL.readLine()) != null) {
           Settings.add(line);
           System.out.println("The Setting line is " + Settings);
       }
       readerL.close();
   }catch (IOException e){
       e.printStackTrace();
   }

通过阅读我得到了这个

设定行是[��sr��java.util.ArrayListx��a��I��sizexp��w��t��] 设置行是[��sr��java.util.ArrayListx��a��I��sizexp��w��t��，test @ test。 comt��passwordt��itdguccgjx]

我需要这样

test@test.com 密码 itdguccgjx

有什么问题？

抱歉我的英语不好。

您好

我会喜欢这个。

Textbox1的 TextBox2中 Textbox3

.......

如果我得到arraylist.get（1）.tostring的值，我会得到Textbox2

读/写ArrayList String to file

0 个答案: