Android store object into shared preference

First you need to add GSON dependency (ref)

compile 'com.google.code.gson:gson:2.2.4'

Writing object to shared preference

SharedPreferences sharedPref =  getApplicationContext().getSharedPreferences("com.example.myapp.PREFERENCE_FILE_KEY",Context.MODE_PRIVATE);
	
SharedPreferences.Editor editor = sharedPref.edit();

Gson gson = new Gson();

String jsonMyObject = gson.toJson(myObject);

editor.putInt("myObject", jsonMyObject );

editor.commit()

Reading Object from shared preference

SharedPreferences sharedPref =  getApplicationContext().getSharedPreferences("com.example.myapp.PREFERENCE_FILE_KEY",Context.MODE_PRIVATE);
	
Gson gson = new Gson();

String jsonMyObject= mSharedPreferences.getString("myObject", "");

myObject =  gson.fromJson(jsonMyObject, MyObject.class);

 

Saving List of objects in to shared preference

ArrayList<userModel> userList= new ArrayList<>();

userList.add(new userModel("Jos", "Kuriya"));
userList.add(new userModel("Kiran", "Pnr"));


Gson gson = new GsonBuilder().create();
JsonArray userJsonArray = gson.toJsonTree(userList).getAsJsonArray();


//Adding data to shared preference 
SharedPreferences.Editor editor = mSharedPref.edit();
editor.putString("MyUsers", userJsonArray + "");
editor.commit();



//Retrieving data from shared preference
String jsonPreferences = mSharedPref.getString("MyUsers", "");
Type type = new TypeToken<ArrayList<userModel>>() {}.getType();
ArrayList<userModel> dataFromSharedPref = gson.fromJson(jsonPreferences, type);

 

Author: bm on June 7, 2016
Category: Android

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