Trigger Gallery OnFling without GUI Input

How can you trigger an onFling() without the user actually touching the device?

Actually my need is a little different than that. I have a horizontally-scrolling Gallery, and below that is a row of buttons. I want the user to be able to advance the gallery to开发者_如何学Go the next View just by tapping a bottom-row button. Let's call this method next().

I envision calling the next() from the OnClickListener.

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As it happens, there is a method available to Gallery. It is setSelected(int index).