1     public void save(String name, String age){
 2         SharedPreferences preference = mcontext.getSharedPreferences("app_preference", Context.MODE_PRIVATE);
 3         Editor editor = preference.edit();
 4         editor.putString("name", name);
 5         editor.putString("age", age);
 6         editor.commit();
 7     }
 8 
 9     public Map<String, String> getPreference(){
10         Map<String, String> param = new HashMap<String, String>();
11         SharedPreferences preference = mcontext.getSharedPreferences("app_preference", Context.MODE_PRIVATE);
12         param.put("name", preference.getString("name", ""));
13         param.put("age", preference.getString("age", ""));
14         
15         return param;
16     }

1         service = new PreferenceService(MainActivity.this);
2         Map<String, String> param = service.getPreference();
3         
4         name = (EditText)this.findViewById(R.id.name);
5         name.setText(param.get("name"));
6         age = (EditText)this.findViewById(R.id.age);
7         age.setText(param.get("age"));