如何在android中编程创建带密码保护的.txt文件？

import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStreamWriter;
import java.io.Writer;

private void createPasswordProtectedTxtFile(String fileName, String password, String content) {
    try {
        // 创建文件对象
        File file = new File(getExternalFilesDir(null), fileName);

        // 创建输出流
        FileOutputStream fos = new FileOutputStream(file);
        Writer writer = new OutputStreamWriter(fos);

        // 写入密码
        writer.write("Password: " + password + "\n\n");

        // 写入内容
        writer.write(content);

        // 关闭输出流
        writer.close();
        fos.close();

        // 文件创建成功
        // 可以在此处进行其他操作，如上传到云存储等
    } catch (Exception e) {
        e.printStackTrace();
        // 文件创建失败
    }
}

String fileName = "protected_file.txt";
String password = "mypassword";
String content = "This is the content of the file.";

createPasswordProtectedTxtFile(fileName, password, content);