Another way to remember it is: android:gravity: position a layout's content android:layout_gravity: position a view within its parent
On Wed, Feb 3, 2010 at 6:01 PM, Jason Proctor <[email protected]> wrote: > thanks :-) > > this makes it all...... somewhat clear! > > > >> It depends :) >> >> A LinearLayout has a major and a minor axis. The major axis is the one >> that corresponds to the orientation of the LinearLayout. The >> android:gravity attribute of a LinearLayout applies only to the major >> axis and applies to all of the children as one group. For instance, >> you can use android:gravity="center_horizontal" to center horizontally >> all of the children of a horizontal LinearLayout. The >> android:layout_gravity applies to the minor axis and affects one child >> at a time. For instance, android:layout_gravity="bottom" would work in >> a horizontal LinearLayout but NOT in a vertical LinearLayout. >> >> In a RelativeLayout you can use android:gravity to affect the position >> of all of the children at once, either horizontally or vertically. If >> you want to move only one child at a time, use the various >> android:layout_* attribute offered by RelativeLayout.LayoutParams. >> >> If nothing is working for you, open HierarchyViewer and look at the >> bounds of each container. Do you even have enough space to actually do >> any centering? For instance, if your layouts are all using >> wrap_content for their height and you try to center things vertically, >> chances are it won't work, since there won't be space left in which to >> center the children. >> >> On Wed, Feb 3, 2010 at 5:51 PM, Jason Proctor >> <[email protected]> wrote: >>> >>> i have a LinearLayout with some dynamically shown/hidden items, and i'm >>> trying to centre it horizontally in a RelativeLayout or LinearLayout. >>> >>> seems like there are more than a few ways of specifying alignment and >>> centring etc. i've tried layout_centerHorizontal and layout_gravity, >>> nothing's working. >>> >>> which is the correct incantation for this case? >>> >>> thanks much >>> -- >>> jason.vp.engineering.particle >>> >>> -- >>> 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 >>> >> >> >> >> -- >> Romain Guy >> Android framework engineer >> [email protected] >> >> 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 >> >> -- >> 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 > > > -- > jason.vp.engineering.particle > > -- > 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 > -- Romain Guy Android framework engineer [email protected] 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 -- 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
