android - Shuffling in a gridview -

i having trouble shuffling images in gridview. makin npuzzle slider , can slide blank image. main problem set tags on imageview in gridviewadapter. if shuffle images, these tags stay same supposed change images. example

suppose got bitmaparraylist of bitmaps: {bm0,bm1,bm2,bm3,bm4,bm5,bm6,bm7,bm8} , set tags {0,1,2,3,4,5,6,7,8} in image adapter. if shuffle bitmap, how supposed shuffle imagetags them?

here code of imageadapter:

private arraylist<bitmap> crops; private list id; private context mcontext;  public imageadapter(context c, arraylist<bitmap> crops, list id) {     mcontext = c;     this.crops = crops;     this.id = id; }  public int getcount() {     return crops.size(); }  public object getitem(int position) {     return null; }  public long getitemid(int position) {     return 0; }   public view getview(int position, view convertview, viewgroup parent) {     imageview imageview;     if (convertview == null) {  // if it's not recycled, initialize attributes         imageview = new imageview(mcontext);         imageview.setlayoutparams(new gridview.layoutparams(85, 85));         imageview.setscaletype(imageview.scaletype.center_crop);         imageview.setpadding(8, 8, 8, 8);     } else {         imageview = (imageview) convertview;     }      imageview.setimagebitmap(crops.get(position));     imageview.settag(position);     return imageview; } 

}

as can see tags same, cause problems. :(

any hints tricks or tips on solving this?

ps: made list id's didn't because didn't know do

kees

you can shuffle list or other collection this

long seed = system.nanotime(); collections.shuffle(bitmaparraylist , new random(seed)); 

after call adapter's notifydatasetchanged method. don't need set tag of imageview.