TextView textView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        textView = findViewById(R.id.tv);

        try { //파일저장
            Serializer serializer = new Persister();
            Person person = new Person(1,"한사람",22,true);
            OutputStream os = openFileOutput("person.xml",MODE_PRIVATE);
            serializer.write(person,os);
            os.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        }


        try { //파일읽기
            Serializer serializer = new Persister();
            InputStream is = openFileInput("person.xml");

            Person person = serializer.read(Person.class, is);

            textView.setText(person.toString());


        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        }



    }
}