Save ArrayList to SharedPreferences

Question

I have an ArrayList with custom objects. Each custom object contains a variety of strings and numbers. I need the array to stick around even if the user leaves

Answer 1

Hey friends I got the solution of above problem without using Gson library. Here I post source code.

1.Variable declaration i.e

  SharedPreferences shared;
  ArrayList arrPackage;

2.Variable initialization i.e

 shared = getSharedPreferences("App_settings", MODE_PRIVATE);
 // add values for your ArrayList any where...
 arrPackage = new ArrayList<>();

3.Store value to sharedPreference using packagesharedPreferences():

 private void packagesharedPreferences() {
   SharedPreferences.Editor editor = shared.edit();
   Set set = new HashSet();
   set.addAll(arrPackage);
   editor.putStringSet("DATE_LIST", set);
   editor.apply();
   Log.d("storesharedPreferences",""+set);
 }

4.Retrive value of sharedPreference using retriveSharedValue():

 private void retriveSharedValue() {
   Set set = shared.getStringSet("DATE_LIST", null);
   arrPackage.addAll(set);
   Log.d("retrivesharedPreferences",""+set);
 }

I hope it will helpful for you...