It's unfortunately a "working as expected," although I'd agree that the "expected" is surprising. If you read your layout you will realize it does not make much sense:
- The container is as tall as its child - The child is as tall as its content - You tell the child to center its content (which is meaningless since both are the same height) - In the case of RelativeLayout you tell the child to be aligned with the parent's bottom, which is meaningless since the container and the child have the same height already What happens is when RL sees "align child to bottom," it tries to do exactly that and grows to take as much space as available, and then aligns your child to the bottom. Your two layouts are definitely NOT supposed to be equivalent. On Mon, May 3, 2010 at 5:57 AM, mbaroukh <mike.baro...@gmail.com> wrote: > Hi all. > > I suppose it's not a bug but a "works as designed" but I found this to > be really frustrating. > The use case is simplified just to the point that is a problem for me. > > Here is the first layout that works : > <?xml version="1.0" encoding="utf-8"?> > <LinearLayout xmlns:android="http://schemas.android.com/apk/res/ > android" > android:layout_width="fill_parent" > android:layout_height="wrap_content" > android:orientation="vertical" >> > <TextView > android:layout_width="wrap_content" > android:layout_height="wrap_content" > android:text="Test" > android:gravity="center_vertical" > /> > </LinearLayout> > > > and the layout that doesn't works : > <?xml version="1.0" encoding="utf-8"?> > <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/ > android" > android:layout_width="fill_parent" > android:layout_height="wrap_content" >> > <TextView > android:layout_width="wrap_content" > android:layout_height="wrap_content" > android:text="Test" > android:gravity="center_vertical" > android:layout_alignParentBottom="true" > /> > </RelativeLayout> > > In the first case, "Test" is written to the top of the screen. > In the second case, "Test" is written in the miiddle of the screen. > > It seems, for me, that LinearLayout perfoems correctly. > That's not the case for RelativeLayout. > From my understanding, the two layout should rendre the samething. > > Yes, if we remove "alignParentBottom" to the RelativeLayout case, it > works, but for what I wan't to do, I really need it. > > So, does anybody knows if it is really a bug and maybe there is a > workaround or it is the expected behavior and eventually ... why ? > > Thanks a lot ! > > Mike > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to android-developers@googlegroups.com > To unsubscribe from this group, send email to > android-developers+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en > -- Romain Guy Android framework engineer romain...@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 -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en