Java convert ArrayList to string and back to ArrayList?

Question

I wanted to save an ArrayList to SharedPreferences so I need to turn it into a string and back, this is what I am doing:

// Save to shared preferences
Shared         


        

Answer 1

      //arraylist convert into String using Gson 
      Gson gson = new Gson();
      String data = gson.toJson(myArrayList);
      Log.e(TAG, "json:" + gson);

      //String to ArrayList

      Gson gson = new Gson();
      arrayList=gson.fromJson(data, new TypeToken>()
      {}.getType());