Saving ArrayLists in SQLite databases

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You cannot insert ArrayList directly into Sqlite. Instead, you could use JSONObject (org.json.JSONObject) to insert the ArrayList. Please check below snippet, you can try something like below….

To insert,

JSONObject json = new JSONObject();
json.put("uniqueArrays", new JSONArray(items));
String arrayList = json.toString();

Insert the string into db.

To Read,
Read the string from db as String, 

 JSONObject json = new JSONObject(stringreadfromsqlite);
  ArrayList items = json.optJSONArray("uniqueArrays");

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