android:layout_centerInParent does not work

Question

I have an image that I want to place in the center of the screen. Despite of my expectations, it is centered horizontally but not vertically. That is, the image touches the screen top.

The same layout shows ok in a sandbox project, but unfortunately not in the real one.

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <FrameLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" >
    <!-- ... -->
        <RelativeLayout
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            >
            <ImageView
                android:id="@+id/progress2"
                android:src="@drawable/wait2"
                android:layout_centerInParent="true"
               android:layout_centerHorizontal="true"
               android:layout_centerVertical="true"
                android:visibility="visible"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                />
        </RelativeLayout>

The lines

               android:layout_centerHorizontal="true"
               android:layout_centerVertical="true"

are of course unnecessary, but the thing does not work in either case.

Any suggestions are welcome.

EDIT: it looks like it's relevant that the view is shown from an InputMethodService.

Answer 1

I just had the same Problem. I used

android:layout_centerInParent

and it worked on the AndroidStudio preview and on an Nexus 4 with 4.3 device. But on Galaxy S1 with 2.3 it did not work.

I fixed it by wrapping the Layout i wanted to center in an RelativeLayout and center that with the gravity attribute:

<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center">

<RelativeLayout
    ...

That worked on both devices.