Hi, Thanks for clearing that up Dianne.
In my case I have been consistently using/overriding Activity.onTouchEvent(MotionEvent event) so the coordinates are relative to the Window & not the associated View(s), so yes I am getting them from the wrong place in some circumstances. Regards On Apr 14, 12:12 pm, Dianne Hackborn <[email protected]> wrote: > Coordinates in MotionEvent are *not* absolute. MotionEvent.getX() and > MotionEvent.getY() return the location in the coordinate space that the > event has been dispatched to. > > If you are getting these somewhere outside of a view (such as > Activity.onMotionEvent()) they will probably be relative to the window. > They will never be relative to the screen. MotionEvent.getRawX/Y() return > the coordinates in the screen space. > > If you are in a situation where you are getting coordinates relative to the > window but actually want them relative to some other UI element, you are > probably getting them from the wrong place. > > > > > > > > > > On Wed, Apr 13, 2011 at 6:09 PM, gjs <[email protected]> wrote: > > Hi, > > > Touchscreen co-ordinates seem to be absolute device/screen > > coordinates, so you need to account for this offset for your app > > screens when status bar is present. > > > Be careful though are status bar is not always present, it can be > > different heights for different Android versions/devices & on Android > > 3.0+ devices is at bottom of screen rather than top of screen. > > > I'd also be interested to know how others handle this effectively & > > generically given the variables mentioned. > > > Regards > > > On Apr 13, 11:50 pm, henry <[email protected]> wrote: > > > When I develop a app, I click at the up-left corner, I got x=0 y=59 or > > > something. How do I determine the y value? There are two rows above my > > > Touchable screen in my app: > > > 1 first line/row is a tool/status bar which I don't know how to access > > > it > > > 2. next line is my app name like "Hello World". > > > I think this two play a role to determine the y value. > > > How do I termine origin y value in my program? > > > > -Henry > > > -- > > 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 > > -- > 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
