public ContactsTable(Context context) { db = new MyDB(context); if (!db.isTableExists(TABLENAME)) { String createTableSql = "CREATE TABLE IF NOT EXISTS " + TABLENAME + "(id_DB integer primary key AUTOINCREMENT, " + User.NAME + " VARCHAR," + User.MOBILE + " VARCHAR," + User.DANWEI + " VARCHAR," + User.QQ + " VARCHAR," + User.ADDRESS + " VARCHAR)"; db.createTable(createTableSql); } }