Hi, You can't get the activity behind unless it is your own. Otherwise it is in another process and untouchable by you.
There is only ever one activity resumed at a time, so if you are in the front and resumed, then the home screen (or whatever) behind you is paused (though not stopped because it is still visible). The only way to let events get to the window behind yours is to make your window not fullscreen, and set WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL to tell the window manager that touches outside of your window should be delivered to whatever is behind it. On Mon, Feb 8, 2010 at 7:17 PM, sheng wang <[email protected]> wrote: > Hi GuoBin, > > 1. My translucent activity will be the root acitivity, and very possible > the home screen will be just behind, but what is the programmable way that > can get a activity variable equals to the Home Launcher ? > > > > 2010/2/8 Guobin <[email protected]> > >> 1. Possibly there are ways to find the activity behind the current >> >> one. >> Precondition: All activity are fullscreen. >> If your activity is the root activity, then Home is in behind. >> Otherwise find the previous activity in the task stack. >> > > 1. My translucent activity will be the root acitivity, and very possible > the home screen will be just behind, but what is the programmable way that > can get a activity variable equals to the Home Launcher in my activity? > > >> 2. You could send the touch event to other activity, but it's useless >> I think. >> The Android Window Mananger can only handle UI events for one view >> hirarchy at one time. >> May you send the event to the other activity, but no one can handle >> it. >> > > 2. In my understanding the activity behind in OnResume status, but it's > still running. I'm really not sure about that I will try some test on it . > > >> >> BRs >> Guobin >> >> On Feb 8, 12:50 pm, sheng wang <[email protected]> wrote: >> > Hi GuoBin, >> > >> > I understand what u mean below. I think that's the standard way the >> android >> > deal with the event. Event goes through a current path within the >> activity. >> > No event will go out of the current activity. >> > >> > As a surround way, is there any method that can let the current activity >> > find out who is behind him? so he might communicate with the one behind >> > it? >> > >> > Anyway, think you for taking your time to think the question. >> > >> > Shawn. >> > >> > 2010/2/8 Guobin <[email protected]> >> > >> > > > 1. Whether the event can be send down to any thing behind the >> current >> > > > activity. >> > > No, you can't. >> > > On the Android platform, you define an Activity's UI using a hierarchy >> > > of View and ViewGroup nodes. >> > > Home & your activity are different activity, they have their own view >> > > hierarchy. >> > > Key events are always delivered to the View currently in focus. They >> > > are dispatched starting from the top of the View hierarchy, and then >> > > down, until they reach the appropriate destination. >> > > But not the view of other activity. >> > >http://developer.android.com/guide/topics/ui/ui-events.html >> > >> > > Guobin >> > >> > > -- >> > > You received this message because you are subscribed to the Google >> > > Groups "Android Developers" group. >> > > To post to this group, send email to >> [email protected] >> > > To unsubscribe from this group, send email to >> > > [email protected]<android-developers%[email protected]> >> <android-developers%[email protected]<android-developers%[email protected]> >> > >> > > For more options, visit this group at >> > >http://groups.google.com/group/android-developers?hl=en >> > >> > >> >> -- >> You received this message because you are subscribed to the Google >> Groups "Android Developers" group. >> To post to this group, send email to [email protected] >> To unsubscribe from this group, send email to >> [email protected]<android-developers%[email protected]> >> For more options, visit this group at >> http://groups.google.com/group/android-developers?hl=en >> > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected]<android-developers%[email protected]> > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en > -- Dianne Hackborn Android framework engineer [email protected] Note: please don't send private questions to me, as I don't have time to provide private support, and so won't reply to such e-mails. All such questions should be posted on public forums, where I and others can see and answer them. -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
