Thank you, Bob. I get very much cause of your help. I would research the
windows manager service and if I have any result I would let you know.

Regards

2010/3/22 Bob Kerns <[email protected]>

> If you're serious about doing this -- for example, you have some new
> device with a larger screen, and you're looking to compete with the
> iPad, then what you want is to ask in the android-porting group
> instead of here.
>
> This group is about things using the SDK, and you can't do it in the
> SDK.
>
> I think you're going to need two window managers, and a way of
> arbitrating and routing events (including from any physical buttons)
> to the appropriate one.
>
> And you're going to need scheduler changes. Right now, the foreground
> activity gets priority. You probably want to maintain a similar
> policy, but the definition of which activity gets priority gets a bit
> more complicated. This may not involve actual changes to the
> scheduler, but rather with how it gets informed about which activity
> to give priority to -- but to get a quick response to a tap on the
> other window, you may need to take further measures.
>
> If you sometimes use full screen, sometimes half, there's also issues
> about communicating to apps what their size is, managing the
> resources, deciding when to be full and when to be half, etc.
>
> I'd strongly suggest coordinating with the Android team on the
> question. It's an architectural issue and an architectural change, and
> you'd like to take it in a direction that is compatible with other
> devices and future releases. You don't want to be stuck down the road
> with a one-off version of the OS that can't run apps from the app
> store, etc.
>
> I do think it's something that needs to be done at some point, to keep
> up with hardware trends.
>
> On Mar 21, 11:28 pm, Michael Wu <[email protected]> wrote:
> > Hi, all.
> >
> > I have a question about application excution. Generally, only one
> activity
> > could be excuted at the same
> > time.
> >
> > Even though there are still other applications which is excuted in the
> > background, there is still only one
> > application could be showed on the screen display.
> >
> > ----------
> > |         |
> > | AP1  |    AP2 is excuted in background.
> > |         |
> >  ----------
> >
> > My question is, Is it possible  to achieve double activity showing on the
> > screen display by modifying the
> > android framework? As the following picture, two applications are
> > excuted and showed on the screen
> > display at the same time.
> >
> > -----------
> > | AP1   |
> > |          |
> > | AP2   |
> >  -----------
> >
> > I have some ideas:
> > 1. Change the scale of application into smaller size.
> > 2. Modify the framework to activate another view activity.
> > However, I am not sure how much effort should I pay on the second step.
> Does
> > anyone have some ideas
> > to share with me?
> >
> > Regards
> > Michael
>
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-- 
Michael Wu
Quanta Computer
Moblie Internet Device 2 BU
Kueishan, Taoyuan, Taiwan
[email protected]

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