public List<GroupsModel> getGroupsData() {
List<GroupsModel> groupsModelList = new ArrayList<GroupsModel>();
SQLiteDatabase db = this.getReadableDatabase();
String query = "SELECT * FROM " + TABLE_GROUPS;
Cursor c = db.rawQuery(query, null);
if (c.moveToFirst()) {
do {
GroupsModel groupsModel = new GroupsModel();
groupsModel.setGroupId(new Integer(c.getInt(c.getColumnIndex(GROUP_ID.trim()))));
groupsModel.setGroupName(c.getString(c.getColumnIndex(GROUP_NAME.trim())));
groupsModelList.add(groupsModel);
} while (c.moveToNext());
}
db.close();
return groupsModelList;
}