There is just an if statement in android.app.ActivityThread.java that has it
currently turned off.
On Fri, Jan 23, 2009 at 8:34 PM, drasticp <drast...@gmail.com> wrote:
>
> Hey Dianne, Thanks for your reply! I need this functionality and I've
> built something similar into the internals. However, something tells
> me that you guys did a much better job. :) I can see that most of
> your work is still there, but I can't seem to follow it completely.
> Can you tell me where to turn it back on and/or move this thread to
> the internals discussion?
>
> On Jan 21, 1:46 pm, Dianne Hackborn <hack...@android.com> wrote:
> > This is not currently supported. We weren't using it anywhere in the UI
> on
> > the G1, so we turned it off to avoid wasting time/space.
> >
> >
> >
> > On Wed, Jan 21, 2009 at 6:46 AM, drasticp <drast...@gmail.com> wrote:
> >
> > > I'd like to get some thumbnail images of the running applications. The
> > > combination of RunningTaskInfo.thumbnail and
> > > Activity.onCreateThumbnail seems like just the thing but I don't see
> > > it working. I've overridden onCreateThumbnail in my main Activity.
> > > According to the documentation, this method is called by the framework
> > > when the activity is paused. I've set a breakpoint in the method and
> > > it never seems to be hit. The base implementation of onCreateThumbnail
> > > would work just fine if it would fire.
> >
> > > @Override
> > > public boolean onCreateThumbnail(Bitmap outBitmap, Canvas canvas)
> > > {
> > > return super.onCreateThumbnail(outBitmap, canvas);
> > > }
> >
> > > Also, I've written some simple code to getRunningTasks from the
> > > ActivityManager. The RunningTaskInfo.thumbnail property is always
> > > null. Is there something I need to set within an application so that
> > > it will generate it's thumbnail before onPause? Is something needed in
> > > the manifest. The documentation on this feature is sparse.
> >
> > > Here's some [simplified] code I use in an extension of BaseAdapter to
> > > fetch the running tasks:
> >
> > > ActivityManager manager = (ActivityManager)context.getSystemService
> > > (Context.ACTIVITY_SERVICE);
> > > List<RunningTaskInfo> tasks = manager.getRunningTasks(10);
> > > RunningTaskInfo info = tasks.get(arg0);
> > > LayoutInflater inflater = (LayoutInflater)context.getSystemService
> > > (Context.LAYOUT_INFLATER_SERVICE);
> > > View view = inflater.inflate(R.layout.taskitem, null);
> > > ImageView image = (ImageView)view.findViewById(R.id.image);
> > > TextView label = (TextView)view.findViewById(R.id.label);
> > > label.setText(info.baseActivity.getPackageName());
> > > Bitmap bmp = info.thumbnail;
> > > image.setImageBitmap(bmp);
> >
> > --
> > 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.
> >
>
--
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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