diff --git a/res/layout-large/customization_drawer.xml b/res/layout-large/customization_drawer.xml
index a8f6ce0..2009117 100644
--- a/res/layout-large/customization_drawer.xml
+++ b/res/layout-large/customization_drawer.xml
@@ -40,15 +40,12 @@
                 launcher:wallpaperCellSpanX="@integer/customization_drawer_contents_wallpaperCellSpanX"
                 launcher:wallpaperCellCountX="@integer/customization_drawer_contents_wallpaperCellCountX"
                 launcher:widgetCellCountX="@integer/customization_drawer_contents_widgetCellCountX"
-                launcher:cellCountX="@integer/customization_drawer_contents_cellCountX"
-                launcher:cellCountY="@integer/customization_drawer_contents_cellCountY"
                 launcher:pageLayoutWidthGap="@dimen/customization_drawer_contents_pageLayoutWidthGap"
-                launcher:pageLayoutHeightGap="12dp"
-                launcher:pageLayoutPaddingTop="40dp"
-                launcher:pageLayoutPaddingBottom="25dp"
-                launcher:pageLayoutPaddingLeft="20dp"
-                launcher:pageLayoutPaddingRight="20dp"
-                launcher:pageLayoutMaxHeight="@dimen/customization_drawer_content_height" />
+                launcher:pageLayoutHeightGap="@dimen/customization_drawer_contents_pageLayoutHeightGap"
+                launcher:pageLayoutPaddingTop="@dimen/customization_drawer_contents_pageLayoutPaddingTop"
+                launcher:pageLayoutPaddingBottom="@dimen/customization_drawer_contents_pageLayoutPaddingBottom"
+                launcher:pageLayoutPaddingLeft="@dimen/customization_drawer_contents_pageLayoutPaddingLeft"
+                launcher:pageLayoutPaddingRight="@dimen/customization_drawer_contents_pageLayoutPaddingRight" />
          </FrameLayout>
       </LinearLayout>
 </com.android.launcher2.CustomizeTrayTabHost>
\ No newline at end of file
diff --git a/res/layout-large/launcher.xml b/res/layout-large/launcher.xml
index 25ef363..f95dd4e 100644
--- a/res/layout-large/launcher.xml
+++ b/res/layout-large/launcher.xml
@@ -42,6 +42,6 @@
     <include layout="@layout/customization_drawer"
         android:id="@+id/customization_drawer"
         android:layout_width="match_parent"
-        android:layout_height="@dimen/customization_drawer_height"
+        android:layout_height="wrap_content"
         android:layout_gravity="bottom" />
 </com.android.launcher2.DragLayer>
diff --git a/res/values-large-land/dimens.xml b/res/values-large-land/dimens.xml
index 0f7e0ed..eeb16f4 100644
--- a/res/values-large-land/dimens.xml
+++ b/res/values-large-land/dimens.xml
@@ -19,9 +19,6 @@
          or right while you're dragging. -->
     <dimen name="scroll_zone">100dip</dimen>
 
-    <dimen name="customization_drawer_height">480dp</dimen>
-    <dimen name="customization_drawer_content_height">420dp</dimen>
-
     <dimen name="all_apps_view_pageLayoutWidthGap">36dp</dimen>
     <dimen name="all_apps_view_pageLayoutHeightGap">6dp</dimen>
     <dimen name="all_apps_view_pageLayoutPaddingTop">20dp</dimen>
@@ -29,10 +26,15 @@
     <dimen name="all_apps_view_pageLayoutPaddingLeft">40dp</dimen>
     <dimen name="all_apps_view_pageLayoutPaddingRight">40dp</dimen>
 
+    <!-- Dimensions for customize should generally be the same as all apps, or very similar. -->
+    <dimen name="customization_drawer_contents_pageLayoutWidthGap">32dp</dimen>
+    <dimen name="customization_drawer_contents_pageLayoutHeightGap">12dp</dimen>
+    <dimen name="customization_drawer_contents_pageLayoutPaddingTop">20dp</dimen>
+    <dimen name="customization_drawer_contents_pageLayoutPaddingBottom">20dp</dimen>
+    <dimen name="customization_drawer_contents_pageLayoutPaddingLeft">40dp</dimen>
+    <dimen name="customization_drawer_contents_pageLayoutPaddingRight">40dp</dimen>
+
     <integer name="customization_drawer_contents_wallpaperCellSpanX">3</integer>
     <integer name="customization_drawer_contents_wallpaperCellCountX">12</integer>
     <integer name="customization_drawer_contents_widgetCellCountX">14</integer>
-    <integer name="customization_drawer_contents_cellCountX">8</integer>
-    <integer name="customization_drawer_contents_cellCountY">3</integer>
-    <dimen name="customization_drawer_contents_pageLayoutWidthGap">32dp</dimen>
 </resources>
\ No newline at end of file
diff --git a/res/values-large-port/dimens.xml b/res/values-large-port/dimens.xml
index 2ea9e38..89f8605 100644
--- a/res/values-large-port/dimens.xml
+++ b/res/values-large-port/dimens.xml
@@ -19,9 +19,6 @@
          or right while you're dragging. -->
     <dimen name="scroll_zone">40dp</dimen>
 
-    <dimen name="customization_drawer_height">800dp</dimen>
-    <dimen name="customization_drawer_content_height">420dp</dimen>
-
     <dimen name="all_apps_view_pageLayoutWidthGap">36dp</dimen>
     <dimen name="all_apps_view_pageLayoutHeightGap">36dp</dimen>
     <dimen name="all_apps_view_pageLayoutPaddingTop">25dp</dimen>
@@ -32,7 +29,12 @@
     <integer name="customization_drawer_contents_wallpaperCellSpanX">3</integer>
     <integer name="customization_drawer_contents_wallpaperCellCountX">9</integer>
     <integer name="customization_drawer_contents_widgetCellCountX">9</integer>
-    <integer name="customization_drawer_contents_cellCountX">5</integer>
-    <integer name="customization_drawer_contents_cellCountY">3</integer>
+
+    <!-- Dimensions for customize should generally be the same as all apps, or very similar. -->
     <dimen name="customization_drawer_contents_pageLayoutWidthGap">36dp</dimen>
+    <dimen name="customization_drawer_contents_pageLayoutHeightGap">12dp</dimen>
+    <dimen name="customization_drawer_contents_pageLayoutPaddingTop">25dp</dimen>
+    <dimen name="customization_drawer_contents_pageLayoutPaddingBottom">25dp</dimen>
+    <dimen name="customization_drawer_contents_pageLayoutPaddingLeft">20dp</dimen>
+    <dimen name="customization_drawer_contents_pageLayoutPaddingRight">20dp</dimen>
 </resources>
\ No newline at end of file
diff --git a/res/values-large/dimens.xml b/res/values-large/dimens.xml
index 0c0d60e..7bc8ec0 100644
--- a/res/values-large/dimens.xml
+++ b/res/values-large/dimens.xml
@@ -82,4 +82,14 @@
     <!-- How much the content view of an alert dialog should be inset (currently used
         for the WallpaperChooser in XLarge mode) -->
     <dimen name="alert_dialog_content_inset">0dp</dimen>
+
+    <!-- The actual number of rows/columns will be determined dynamically based on the screen
+         size, but in portrait we want to cap the rows at 3, otherwise it looks weird. -->
+    <integer name="customization_drawer_contents_maxCellCountY">3</integer>
+
+    <!-- The percentage of vertical space that the customize tray should try to fill. -->
+    <integer name="customization_drawer_verticalFillPercentage">65</integer>
+
+    <!-- Max number of rows in all apps, because too many looks weird. -->
+    <integer name="all_apps_view_maxCellCountY">6</integer>
 </resources>
diff --git a/src/com/android/launcher2/AllAppsPagedView.java b/src/com/android/launcher2/AllAppsPagedView.java
index b4eaa49..01cf920 100644
--- a/src/com/android/launcher2/AllAppsPagedView.java
+++ b/src/com/android/launcher2/AllAppsPagedView.java
@@ -70,6 +70,8 @@
     private int mLastMeasureWidth = -1;
     private int mLastMeasureHeight = -1;
 
+    private int mMaxCellCountY;
+
     public AllAppsPagedView(Context context) {
         this(context, null);
     }
@@ -87,7 +89,7 @@
         a.recycle();
         setSoundEffectsEnabled(false);
 
-        Resources r = context.getResources();
+        final Resources r = context.getResources();
         setDragSlopeThreshold(
                 r.getInteger(R.integer.config_allAppsDrawerDragSlopeThreshold) / 100.0f);
 
@@ -95,6 +97,7 @@
         PagedViewCellLayout layout = new PagedViewCellLayout(getContext());
         setupPage(layout);
         mPageContentWidth = layout.getContentWidth();
+        mMaxCellCountY = r.getInteger(R.integer.all_apps_view_maxCellCountY);
     }
 
     @Override
@@ -174,7 +177,19 @@
         availableHeight -= mPageLayoutPaddingTop + mPageLayoutPaddingBottom;
         availableHeight -= cellHeight; // Assume at least one row
         availableHeight -= screenHeight * 0.16f;
-        return (1 + availableHeight / (cellHeight + mPageLayoutHeightGap));
+        if (availableHeight > 0) {
+            return Math.min(mMaxCellCountY,
+                    1 + availableHeight / (cellHeight + mPageLayoutHeightGap));
+        }
+        return 0;
+    }
+
+    int getCellCountX() {
+        return mCellCountX;
+    }
+
+    int getCellCountY() {
+        return mCellCountY;
     }
 
     void allowHardwareLayerCreation() {
diff --git a/src/com/android/launcher2/CustomizePagedView.java b/src/com/android/launcher2/CustomizePagedView.java
index 8d867b6..406d634 100644
--- a/src/com/android/launcher2/CustomizePagedView.java
+++ b/src/com/android/launcher2/CustomizePagedView.java
@@ -108,6 +108,9 @@
     // The max number of wallpaper cells to take a "page" of wallpaper items
     private int mMaxWallpaperCellHSpan;
 
+    // The maximum number of rows in a paged view.
+    private int mMaxCellCountY;
+
     // The raw sources of data for each of the different tabs of the customization page
     private List<AppWidgetProviderInfo> mWidgetList;
     private List<ResolveInfo> mShortcutList;
@@ -143,7 +146,10 @@
 
     private int[] mDragViewOrigin = new int[2];
 
-    private int mPageContentWidth;
+    private int mPageContentWidth = -1;
+    private int mPageContentHeight = -1;
+
+    private AllAppsPagedView mAllAppsPagedView;
 
     public CustomizePagedView(Context context) {
         this(context, null, 0);
@@ -162,10 +168,6 @@
         mMaxWallpaperCellHSpan = a.getInt(R.styleable.CustomizePagedView_wallpaperCellCountX, 8);
         mMaxWidgetsCellHSpan = a.getInt(R.styleable.CustomizePagedView_widgetCellCountX, 8);
         a.recycle();
-        a = context.obtainStyledAttributes(attrs, R.styleable.PagedView, defStyle, 0);
-        mCellCountX = a.getInt(R.styleable.PagedView_cellCountX, 7);
-        mCellCountY = a.getInt(R.styleable.PagedView_cellCountY, 4);
-        a.recycle();
 
         mCustomizationType = CustomizationType.WidgetCustomization;
         mWidgetPages = new ArrayList<ArrayList<AppWidgetProviderInfo>>();
@@ -176,6 +178,8 @@
         setDragSlopeThreshold(
                 r.getInteger(R.integer.config_customizationDrawerDragSlopeThreshold) / 100.0f);
 
+        mMaxCellCountY = r.getInteger(R.integer.customization_drawer_contents_maxCellCountY);
+
         setVisibility(View.GONE);
         setSoundEffectsEnabled(false);
         setupWorkspaceLayout();
@@ -188,29 +192,44 @@
     }
 
     @Override
-    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
-        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+    protected void onMeasure(int widthSpec, int heightSpec) {
+        // Base the size of this control on the size of the All Apps view.
+        final int cellCountX = mAllAppsPagedView.getCellCountX();
+        final int cellCountY = Math.min(mAllAppsPagedView.getCellCountY(), mMaxCellCountY);
 
-        final int widthSize = MeasureSpec.getSize(widthMeasureSpec);
-        final int heightSize = MeasureSpec.getSize(heightMeasureSpec);
+        if (cellCountX != mCellCountX || cellCountY != mCellCountY) {
+            mCellCountX = cellCountX;
+            mCellCountY = cellCountY;
 
-        if (mFirstMeasure) {
-            mFirstMeasure = false;
-
-            // TODO: actually calculate mCellCountX/mCellCountY as some function of
-            // widthSize and heightSize
-            //mCellCountX = ?
-            //mCellCountY = ?
-
-            // Since mCellCountX/mCellCountY changed, we need to update the pages
-            invalidatePageData();
-
-            // Create a dummy page and set it up to find out the content width (used by our parent)
+            // Create a dummy page and set it up to determine our size.
+            // The size is based on the app shortcuts tab having the same dimensions as All Apps.
             PagedViewCellLayout layout = new PagedViewCellLayout(getContext());
             setupPage(layout);
             mPageContentWidth = layout.getContentWidth();
+            mPageContentHeight = layout.getContentHeight();
             mMinPageWidth = layout.getWidthBeforeFirstLayout();
         }
+        if (mPageContentHeight > 0) {
+            // Lock our height to the size of the page content
+            final int h = mPageContentHeight + mPageLayoutPaddingTop + mPageLayoutPaddingBottom;
+            heightSpec = MeasureSpec.makeMeasureSpec(h, MeasureSpec.EXACTLY);
+        }
+        super.onMeasure(widthSpec, heightSpec);
+        mFirstMeasure = false;
+    }
+
+    @Override
+    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
+        if (mFirstLayout) {
+            invalidatePageData();
+
+            // invalidatePageData() is what causes the child pages to be created. We need the
+            // children to be measured before layout, so force a new measure here.
+            measure(MeasureSpec.makeMeasureSpec(getMeasuredWidth(), MeasureSpec.EXACTLY),
+                    MeasureSpec.makeMeasureSpec(getMeasuredHeight(), MeasureSpec.EXACTLY));
+        }
+        super.onLayout(changed, left, top, right, bottom);
+        mFirstLayout = false;
     }
 
     public void setLauncher(Launcher launcher) {
@@ -219,6 +238,10 @@
         mPackageManager = context.getPackageManager();
     }
 
+    public void setAllAppsPagedView(AllAppsPagedView view) {
+        mAllAppsPagedView = view;
+    }
+
     /**
      * Sets the list of applications that launcher has loaded.
      */
diff --git a/src/com/android/launcher2/CustomizeTrayTabHost.java b/src/com/android/launcher2/CustomizeTrayTabHost.java
index 765c41d..b6c55f8 100644
--- a/src/com/android/launcher2/CustomizeTrayTabHost.java
+++ b/src/com/android/launcher2/CustomizeTrayTabHost.java
@@ -41,9 +41,14 @@
 
     private boolean mFirstLayout = true;
 
+    // How much of the vertical space this control should attempt to fill
+    private float mVerticalFillPercentage;
+
     private final LayoutInflater mInflater;
     private Context mContext;
 
+    private CustomizePagedView mCustomizePagedView;
+
     public CustomizeTrayTabHost(Context context, AttributeSet attrs) {
         super(context, attrs);
         mContext = context;
@@ -52,15 +57,17 @@
 
     @Override
     protected void onFinishInflate() {
+        final Resources res = getResources();
+
         setup();
 
-        final CustomizePagedView customizePagedView =
+        mCustomizePagedView =
             (CustomizePagedView) findViewById(R.id.customization_drawer_tab_contents);
 
         // Configure tabs
         TabContentFactory contentFactory = new TabContentFactory() {
             public View createTabContent(String tag) {
-                return customizePagedView;
+                return mCustomizePagedView;
             }
         };
 
@@ -82,26 +89,30 @@
         tabView.setText(mContext.getString(R.string.shortcuts_tab_label));
         addTab(newTabSpec(SHORTCUTS_TAG)
                 .setIndicator(tabView).setContent(contentFactory));
+
+        mVerticalFillPercentage =
+                res.getInteger(R.integer.customization_drawer_verticalFillPercentage) / 100f;
+
         setOnTabChangedListener(new OnTabChangeListener() {
             public void onTabChanged(String tabId) {
                 final CustomizePagedView.CustomizationType newType =
                     getCustomizeFilterForTabTag(tabId);
-                if (newType != customizePagedView.getCustomizationFilter()) {
+                if (newType != mCustomizePagedView.getCustomizationFilter()) {
                     // animate the changing of the tab content by fading pages in and out
                     final Resources res = getResources();
                     final int duration = res.getInteger(R.integer.config_tabTransitionTime);
-                    final float alpha = customizePagedView.getAlpha();
-                    ValueAnimator alphaAnim = ObjectAnimator.ofFloat(customizePagedView,
+                    final float alpha = mCustomizePagedView.getAlpha();
+                    ValueAnimator alphaAnim = ObjectAnimator.ofFloat(mCustomizePagedView,
                             "alpha", alpha, 0.0f);
                     alphaAnim.setDuration(duration);
                     alphaAnim.addListener(new AnimatorListenerAdapter() {
                         @Override
                         public void onAnimationEnd(Animator animation) {
-                            customizePagedView.setCustomizationFilter(newType);
+                            mCustomizePagedView.setCustomizationFilter(newType);
 
-                            final float alpha = customizePagedView.getAlpha();
+                            final float alpha = mCustomizePagedView.getAlpha();
                             ValueAnimator alphaAnim = ObjectAnimator.ofFloat(
-                                    customizePagedView, "alpha", alpha, 1.0f);
+                                    mCustomizePagedView, "alpha", alpha, 1.0f);
                             alphaAnim.setDuration(duration);
                             alphaAnim.start();
                         }
@@ -133,6 +144,22 @@
     }
 
     @Override
+    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+
+        // If there's extra room, try to grow to fill it
+        if (MeasureSpec.getMode(heightMeasureSpec) == MeasureSpec.AT_MOST) {
+            final int availableHeight = MeasureSpec.getSize(heightMeasureSpec);
+            final int finalHeight = Math.max(getMeasuredHeight(),
+                        (int) (availableHeight * mVerticalFillPercentage));
+
+            // Measure a second time with EXACTLY so that we get sized correctly
+            heightMeasureSpec = MeasureSpec.makeMeasureSpec(finalHeight, MeasureSpec.EXACTLY);
+            super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+        }
+    }
+
+    @Override
     protected void onLayout(boolean changed, int l, int t, int r, int b) {
         if (mFirstLayout) {
             mFirstLayout = false;
diff --git a/src/com/android/launcher2/Launcher.java b/src/com/android/launcher2/Launcher.java
index b7f04f7..1d48407 100644
--- a/src/com/android/launcher2/Launcher.java
+++ b/src/com/android/launcher2/Launcher.java
@@ -930,6 +930,7 @@
         if (mCustomizePagedView != null) {
             mCustomizePagedView.setLauncher(this);
             mCustomizePagedView.setDragController(dragController);
+            mCustomizePagedView.setAllAppsPagedView(mAllAppsPagedView);
         } else {
              ImageView hotseatLeft = (ImageView) findViewById(R.id.hotseat_left);
              hotseatLeft.setContentDescription(mHotseatLabels[0]);
diff --git a/src/com/android/launcher2/PagedViewCellLayout.java b/src/com/android/launcher2/PagedViewCellLayout.java
index 655a395..1ba5c05 100644
--- a/src/com/android/launcher2/PagedViewCellLayout.java
+++ b/src/com/android/launcher2/PagedViewCellLayout.java
@@ -259,8 +259,18 @@
         return getWidthBeforeFirstLayout() - (mCellWidth - Utilities.getIconContentSize());
     }
 
+    int getContentHeight() {
+        if (mCellCountY > 0) {
+            return mCellCountY * mCellHeight + (mCellCountY - 1) * Math.max(0, mHeightGap);
+        }
+        return 0;
+    }
+
     int getWidthBeforeFirstLayout() {
-        return mCellCountX * mCellWidth + (mCellCountX - 1) * mWidthGap;
+        if (mCellCountX > 0) {
+            return mCellCountX * mCellWidth + (mCellCountX - 1) * Math.max(0, mWidthGap);
+        }
+        return 0;
     }
 
     @Override