Android:Is this possible to generate the view's Bitmap

I have 4 layouts(views) and I wanna get their shortcuts. I use "getDrawingCache()",yeah,I get the pictures,but I found if I wanna get the pictures,I had to make them shown.(I mean they have to be 开发者_JAVA百科displayed to the user). So Is there any way to get their pictures without displaying them?? Thanks in advance!

This might work

Window window = getLocalActivityManager().startActivity(Id,intent.addFlags(
        Intent.FLAG_ACTIVITY_CLEAR_TOP));

window.getDecorView().buildDrawingCache();
window.getDecorView().getDrawingCache();

This is what is done to update activities in tab activity. Im not sure but its worth a try.