save arraylist in shared preference

Question

I am storing values in ArrayList and pass it to using bundle to next Fragment, and there I set values to my TextView, till here it wor

Answer 1

First download Gson.jar from below link and then add it to libs folder of your project

http://www.java2s.com/Code/Jar/g/Downloadgson17jar.htm

then put That ArrayList in the Class and make object of that class then you can save that object to SharedPreferences like below

public static void save_User_To_Shared_Prefs(Context context, User _USER) {
    SharedPreferences appSharedPrefs = PreferenceManager
            .getDefaultSharedPreferences(context.getApplicationContext());
    SharedPreferences.Editor prefsEditor = appSharedPrefs.edit();
    Gson gson = new Gson();
    String json = gson.toJson(_USER);
    prefsEditor.putString("user", json);
    prefsEditor.commit();

 }

above code is an example _USER objext contain ArrayList.

And to read the object have a look at below code

 public static User get_User_From_Shared_Prefs(Context context) {

    SharedPreferences appSharedPrefs = PreferenceManager
            .getDefaultSharedPreferences(context.getApplicationContext());
    Gson gson = new Gson();
    String json = appSharedPrefs.getString("user", "");


    User user = gson.fromJson(json, User.class);
    return user;
} 

now when you want to get the _USER object call the above function and in result you will have the object and in that you will have the ArrayList