Set Wallpaper when images are from arraylist

Question

How could i set wallpaper when the images are stored in arraylist i have tried but no hope!!

here is the code:

final ImageView image = new ImageView(mContext);
image.setImageResource(mImageIds[pos]);                 

try {
    wallpaperManager.setBitmap(image.getDrawingCache());
} catch (IOException e) {
    e.printStackTrace();
}

I tried using above code but it showing NullPointer Exception.

score 0 · Accepted Answer · answered Apr 03 '13 at 08:56

0

you could've showed a bit more code (how is your array, string name of picture or int id). anyway ill show you how i did similiar thing:

Bitmap bitmap;
    final int[] imgs = new int[] { R.drawable.i1, R.drawable.i2, R.drawable.i3,
            R.drawable.i4, R.drawable.i5, R.drawable.i6, R.drawable.i7,
            R.drawable.i8, R.drawable.i9, R.drawable.i10, };

bitmap = BitmapFactory.decodeResource(getResources(), 
                    imgs[pos]);         
            try {
                getApplicationContext().setWallpaper(bitmap);
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }

answered Apr 03 '13 at 08:56

Marko Niciforovic

3,561
2
21
28

dont mention it, glad I could help! – Marko Niciforovic Apr 03 '13 at 09:43
Marko Niciforovic i have one more doubt .how could we select each item from list dialog box – Apr 03 '13 at 09:47
its hard to tell without seeing your code, maybe this link here can help, it shows listview in dialog box and how to get selected item http://cssinnovations.blogspot.com/2012/07/selection-list-in-alert-dialog-box.html – Marko Niciforovic Apr 03 '13 at 09:52
Marko Niciforovic Thanks..i will check – Apr 03 '13 at 10:01

Set Wallpaper when images are from arraylist

1 Answers1