Question

I’m tring to do a simple matrix initialization in android and I get Error: java.lang.ArrayIndexOutOfBoundsException. I’m trying this:

 Integer id = Integer.valueOf(idcateg);

            System.out.println("Id-ul e"+id);
            vot = new Integer[sirid.length][id];
            for (int i = 0; i < sirid.length; i++) {
                vot[i][id] = 0;

            }
 where id is a value between 1 and 5,sirid.length is a number that reflects number of images from different categorys. For example,I want for category 1 to have something like this :


 vot[0][1]=0;
   vot[1][1]=0;
   vot[2][1]=0;

…etc

Where is my mistache?

Answer 1

try this

Integer id = Integer.valueOf(idcateg);

System.out.println("Id-ul e"+id);
vot = new Integer[sirid.length][id];
for (int i = 0; i < sirid.length; i++) {
     vot[i][id-1] = 0;
}

array index start from 0

you set the size of the vot array to sirid.lengh by id but the array start index value from 0 to (size)(size value not included) see the for loop