Creating a random Integer[] array of images from another Integer[] array in Android
I am creating an activity that displays 9 images in a GridView. I want those images be selected randomly from an Integer[] array that contains 26 images. So my best approach is setting the 26 images fixed and then created a new array and fill using this simple method:

>         public Integer [] allLetters = {
                 R.drawable.a, R.drawable.b,
                 R.drawable.c, R.drawable.d,
                 R.drawable.e, R.drawable.f,
                 R.drawable.g, R.drawable.h,
                 R.drawable.i, R.drawable.j,
                 R.drawable.k, R.drawable.l,
                 R.drawable.m, R.drawable.m,
                 R.drawable.o, R.drawable.p,
                 R.drawable.q, R.drawable.r,
                 R.drawable.s, R.drawable.t,
                 R.drawable.u, R.drawable.v,
                 R.drawable.w, R.drawable.x,
                 R.drawable.y, R.drawable.z
        };
        private Integer[] randomLetters=null;
        public int index=0;
        public Random r= new Random();
        public void creaArray() {
            for (int i = 0; i < 9; i++){
            	index=r.nextInt(26);
            	randomLetters[i]=allLetters[index];
            }
        }

 I thought this would fill randomLetters with 9 random values from allLetters but the app is "forced closing" me :( Any ideas?
Creating a random Integer[] array of images from another Integer[] array in Android
===

I am creating an activity that displays 9 images in a GridView. I want those images be selected randomly from an Integer[] array that contains 26 images. So my best approach is setting the 26 images fixed and then created a new array and fill using this simple method:

>         public Integer [] allLetters = {
                 R.drawable.a, R.drawable.b,
                 R.drawable.c, R.drawable.d,
                 R.drawable.e, R.drawable.f,
                 R.drawable.g, R.drawable.h,
                 R.drawable.i, R.drawable.j,
                 R.drawable.k, R.drawable.l,
                 R.drawable.m, R.drawable.m,
                 R.drawable.o, R.drawable.p,
                 R.drawable.q, R.drawable.r,
                 R.drawable.s, R.drawable.t,
                 R.drawable.u, R.drawable.v,
                 R.drawable.w, R.drawable.x,
                 R.drawable.y, R.drawable.z
        };
        private Integer[] randomLetters=null;
        public int index=0;
        public Random r= new Random();
        public void creaArray() {
            for (int i = 0; i < 9; i++){
            	index=r.nextInt(26);
            	randomLetters[i]=allLetters[index];
            }
        }

 I thought this would fill randomLetters with 9 random values from allLetters but the app is "forced closing" me :( Any ideas?