Scroll a Gallery widget?

I'm using a Gallery widget. I'd like to automate scrolling. Not sure if this is possible?

Gallery has a scrollTo() and scrollBy() set of methods, which I can call from a timer etc, but that ends up scrolling the entire gallery widget itself, not its开发者_Python百科 children view content.

There must be some way to automate scrolling?

Thanks

I'm using the Gallery's "onFling" wrapped in a Timer:

bannerView.onFling(null, null, flingSpeed, 0);

where flingSpeed is the speed you need for the gallery to move to the next item. I'm my case I got an empirical value of -650F (for a 260x80 image plus padding). However, because of the different screen sizes and densities, I multiply my empirical value by the screen density to get it right:

float flingSpeed = -650F * getBaseContext().getResources().getDisplayMetrics().density

The empirical value is probably going to be different for you so you should adapt it to your situation.

AFAIK it isn't possible to have a scrollable widget with the standard android SDK. But some home replacement apps provide a way to do it, like LauncherPro, ADWLauncher or Home++.

More info here and here