android - I can' t access to column that is added afterward by me. What should I do? -


firstly created table :

public void oncreate(sqlitedatabase db) {      db.execsql("create table " + "sorular"              + " (_id integer primary key auto_increment,"              + "soruicerik text," + " siklar1 text," + " siklar2 text,"              + " siklar3 text," + "siklar4 text," + "cevap integer);"); }

and after added datas

after decided add new column table , wrote code:

public void onupgrade(sqlitedatabase db, int oldversion, int newversion) {         if(newversion > oldversion){           db.execsql("alter table sorular add column zorluk integer");         }     }

i added datas new column manuel

but when want access datas new column, application has stopped unexpectedly. code these:

 string sorumetin = okunanlar.getstring(okunanlar.getcolumnindex("soruicerik"));//it's normal  string siklar1 = okunanlar.getstring(okunanlar.getcolumnindex("siklar1"));    //it's normal  string siklar2 = okunanlar.getstring(okunanlar.getcolumnindex("siklar2"));    //it's normal  string siklar3 = okunanlar.getstring(okunanlar.getcolumnindex("siklar3"));    //it's normal  string siklar4 = okunanlar.getstring(okunanlar.getcolumnindex("siklar4"));    //it's normal  int dogrucevap = okunanlar.getint(okunanlar.getcolumnindex("cevap"));         //it's normal  int zorluk = okunanlar.getint(okunanlar.getcolumnindex("zorluk"));            //it has problem

what problem? how solve it?

you should change oncreate this, new column added:

public void oncreate(sqlitedatabase db) {      db.execsql("create table " + "sorular"              + " (_id integer primary key auto_increment,"              + "soruicerik text," + " siklar1 text," + " siklar2 text,"              + " siklar3 text," + "siklar4 text," + " zorluk integer" + "cevap integer);"); }

table created former sql altered in onupgrade


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