This method add new object into ArrayList
//get text from textview
time = date.getText().toString();
entry_d = entry.getText().toString();
dayNa
SharedPreferences prefs=this.getSharedPreferences("yourPrefsKey",Context.MODE_PRIVATE);
Editor edit=prefs.edit();
Set set = new HashSet();
set.addAll(your Arraylist Name);
edit.putStringSet("yourKey", set);
edit.commit();
Set set = prefs.getStringSet("yourKey", null);
List sample=new ArrayList(set);