Question

I’m trying to get all the IDs in the table by cursor. The table has 4 rows, and when I try to access the cursor by any index aside from 0 , the App crashes.

Guys, the problem still exists and even c.getInt(0) doesn’t work…I really dont know where my mistake is???

the logcat also suggests that the error might be comes from

Toast.makeText(getApplicationContext(), "id="+dbd.getIDs()[0], Toast.LENGTH_SHORT).show();

I mean c.getint(0) returns the id, c.getint(2) returns error. Here is the code:

public int []getIDs() {
    SQLiteDatabase db = this.getReadableDatabase();
    SQLiteCursor c = (SQLiteCursor) db.rawQuery("SELECT " + BaseColumns._ID + " FROM Demo ", null);

    int []r = new int[c.getCount()];
    c.moveToFirst();

    do{
        r[c.getPosition()] = c.getInt(0); 
    }while(c.moveToNext());

    c.close();
    db.close();
    return r;       
}

Answer 1

c.getInt(0) return only value of first colunn from current row.

try this code:

do{
int r = c.getInt(0);
Log.d("Your class name","id value = "+r);
}while(c.moveToNext());