Saving Serializable Objects List into sharedPreferences

Question

Can anyone tell me how I can save a list of custom Serializable objects into SharedPreference? I am new To Android and I want to save an Arr

Answer 1

You can use the JSON format to serialize your ArrayList and the objects it contains, and then store the String result into the SharedPreferences.

When you want to get the data back, retrieve the String and use a JSONArray to retrieve each object and add it to a new ArrayList.

Otherwise you can simply use Object(Input/Output)Stream classes and write it into a differente file using (for writing)

FileOutputStream fos = this.openFileOutput(fileName, MODE_PRIVATE);
final OutputStreamWriter osw = new OutputStreamWriter(fos);
JSONArray array = new JSONArray();

// Add your objects to the array

osw.write(array.toString());
osw.flush();
osw.close();