sql - Triggers on sqlite android does not work -

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the goal of trigger insert new record in table column giorni_sett date when update or insert value greater 1 in table shifts column shift, can not run trigger, wrong not know , log have no errors, trigger not work, can me, thank you.

public class dbhelper extends sqliteopenhelper { static string database_name="turnidb.db"; public static final string turni="turni"; public static final string turni_id="idturno"; public static final string turno="turno";  public static final string giorni_sett="giorni"; public static final string giorni_id="giorni_id"; public static final string giorni="giorni"; public static final string data="data";  public dbhelper(context context) {     super(context, database_name, null, 1); } @override public void oncreate(sqlitedatabase db) {     string create_table="create table "+turni+" ("+turni_id+" integer primary key autoincrement,"+turno+" text)";     db.execsql(create_table);      string create_table2="create table "+giorni_sett+" ("+giorni_id+" integer primary key autoincrement,"+giorni+" text,"+data+" integer)";     db.execsql(create_table2); } @override public void onupgrade(sqlitedatabase db, int oldversion, int newversion) {      db.execsql("create trigger if not exists aggiungi_data after update on turni each row when (new.turno > 0) ");     db.execsql(" begin ");     db.execsql("insert giorni_sett (data) values (1);");     db.execsql("end;");      db.execsql("drop trigger aggiungi_data;");     db.execsql("drop table if exists "+turni);     db.execsql("drop table if exists "+giorni_sett);     oncreate(db); }  public static void begintransaction() {     // todo auto-generated method stub }  public static long insert(string string, object object, contentvalues values) {     // todo auto-generated method stub     return 0; }

}

your create trigger query should in oncreate after creation of 2 tables, , should like:

db.execsql("create trigger if not exists aggiungi_data after update on "      + turni + " each row when (new.turno > 0) begin insert "     + giorni_sett + " (data) values (1); end");

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