Hi ,

For application UI performance measurement, We have a requirement to
know the time it takes to show the app on the display screen , after
the intent is fired to launch the application i.e. Letsay I have 1000
contacts in my database, I want to know how much time does the
application take to lauch(or show it on the screen) when we launch the
contacts app. We are launching the activity thru ADB and getting the
timestamp on when we launched, we wanted to know when it is rendered
on the screen.. Is there anyway that we can know this information from
WindowManager or SurfaceFlinger ? If yes, how can we get this
information.. Pls let us know.

Regs, Chaitanya

On Mar 17, 4:34 pm, Dianne Hackborn <hack...@android.com> wrote:
> Because the window manager is responsible for organizing the screen,
> applications don't get to decide that.  The window manager allocates
> surfaces and decides where they go and how they are layered; it never
> touches their bits, which is up to the application.
>
>
>
> On Tue, Mar 17, 2009 at 3:21 PM, Videoguy <puri_mall...@yahoo.com> wrote:
>
> > A surface is basically a pointer to block of memory. Why does a
> > separate process (i.e. Window Manager) have to create it? Why not the
> > activity itself create it?
>
> > Does Window manager need access to that memory?
> > If so, why?
>
> > Just curious.
>
> > Thanks
> > Videoguy
>
> --
> Dianne Hackborn
> Android framework engineer
> hack...@android.com
>
> Note: please don't send private questions to me, as I don't have time to
> provide private support.  All such questions should be posted on public
> forums, where I and others can see and answer them.
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