How do I center a GridView in its LinearLayout parent?

Question

GridView is not behaving like it is supposed to. This screenshot shows that the GridView (in landscape mode) is flushed left. I want it centered.

This is the XML layout for the GridView.

<LinearLayout 
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:id="@+id/templatelandscape"
  android:orientation="horizontal"
  android:layout_width="fill_parent" 
  android:layout_height="wrap_content">
<GridView 
  android:id="@+id/commandsbarlandscape"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_weight="1.0"
  android:layout_alignParentTop="true"
  android:layout_centerInParent="true"
  android:padding="0dp"
  android:verticalSpacing="2dp"
  android:horizontalSpacing="2dp"
  android:numColumns="auto_fit"
  android:columnWidth="52dp"
  android:stretchMode="spacingWidth"
  android:gravity="fill_horizontal" />
</LinearLayout>

What am I doing wrong ?

Answer 1

1. android:layout_height="wrap_content" has no meaning for widgets that have their own scrolling, like GridView.

2. android:layout_alignParentTop="true" and android:layout_centerInParent="true" are for RelativeLayout, not LinearLayout.

Get rid of your android:layout_weight="1.0", change your android:layout_height to "fill_parent" or a specific height, change the LinearLayout to a RelativeLayout, and you may be in better shape.

Answer 2

I don't know if you resolved your problem (i hope yes, and also i'm very late on answering on this post!), but here is a clue:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/mainLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center" >

    <GridView
        android:id="@+id/gridview2"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_margin="10dp"
        android:columnWidth="90dp"
        android:numColumns="auto_fit"
        android:stretchMode="spacingWidth" >

    </GridView>
</LinearLayout>

Unfortunately this work only if there is 1 content on the grid. Maybe someone can improve it!