SupportLeanbackShowcase: Fixed the crash/background color/selector in Guided Step

Wizard view

Guided Action layout have gone through changes that caused "Rent" action to fail
in the example wizard view. Added layout_width and layout_height to all
the containers, as well as a changing "addSharedElement" in
"TransitionsHelper" in leanback support library.

Background color was added & action selector (while loading a video) was
removed by defining new themes.

Change-Id: Ia296e02720513edaea1d4197aacb5b4f88776545

samples/SupportLeanbackShowcase/app/src/main/java/android/support/v17/leanback/supportleanbackshowcase/app/wizard/WizardExample3rdStepFragment.java

@@ -51,14 +51,15 @@ public class WizardExample3rdStepFragment extends WizardExampleBaseStepFragment
                 return R.layout.wizard_progress_action_item;
             }
 
-            @Override
-            public int onProvideLayoutId() {
-                return R.layout.wizard_progress_action_container;
-            }
         };
         return stylist;
     }
 
+    @Override
+    public int onProvideTheme() {
+        return R.style.Theme_Example_LeanbackWizard_NoSelector;
+    }
+
     @Override
     public void onStop() {
         super.onStop();

samples/SupportLeanbackShowcase/app/src/main/res/layout/wizard_progress_action_container.xml

@@ -1,35 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-     Copyright (C) 2015 The Android Open Source Project
-
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
-<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
-                android:layout_width="match_parent"
-                android:layout_height="match_parent">
-
-    <RelativeLayout
-        style="?attr/guidedActionsContainerStyle">
-
-        <FrameLayout
-            android:id="@+id/guidedactions_selector"
-            style="?attr/guidedActionsSelectorStyle"
-            android:visibility="gone"/>
-
-        <android.support.v17.leanback.widget.VerticalGridView
-            android:id="@+id/guidedactions_list"
-            style="?attr/guidedActionsListStyle"/>
-
-    </RelativeLayout>
-
-</RelativeLayout>

samples/SupportLeanbackShowcase/app/src/main/res/layout/wizard_progress_action_item.xml

@@ -16,7 +16,9 @@
 -->
 <android.support.v17.leanback.widget.NonOverlappingLinearLayout
     style="?attr/guidedActionItemContainerStyle"
-    xmlns:android="http://schemas.android.com/apk/res/android">
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
 
     <ProgressBar
         android:id="@+id/progressBar"
@@ -30,12 +32,16 @@
 
     <android.support.v17.leanback.widget.NonOverlappingLinearLayout
         android:id="@+id/guidedactions_item_content"
-        style="?attr/guidedActionItemContentStyle">
+        style="?attr/guidedActionItemContentStyle"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content">
 
         <TextView
             android:id="@+id/guidedactions_item_title"
             style="?attr/guidedActionItemTitleStyle"
-            android:text="Processing..."/>
+            android:text="Processing..."
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content" />
 
     </android.support.v17.leanback.widget.NonOverlappingLinearLayout>
 

samples/SupportLeanbackShowcase/app/src/main/res/values/colors.xml

@@ -41,4 +41,7 @@
     <color name="detail_view_actionbar_background">#04549D</color>
     <color name="detail_view_background">#0374BF</color>
     <color name="detail_view_related_background">#022A4E</color>
+
+    <color name="guidedstep_actions_background">#C03800</color>
+    <color name="guidedstep_dialog_actions_background">#263238</color>
 </resources>

samples/SupportLeanbackShowcase/app/src/main/res/values/styles.xml

@@ -18,14 +18,6 @@
     <style name="AppTheme" parent="@style/Theme.Leanback">
     </style>
 
-    <style name="WizardActionsContainerStyle" parent="Widget.Leanback.GuidedActionsContainerStyle">
-        <item name="android:background">#C03800</item>
-    </style>
-
-    <style name="DialogActionsContainerStyle" parent="Widget.Leanback.GuidedActionsContainerStyle">
-        <item name="android:background">#263238</item>
-    </style>
-
     <!-- Various movie card styles. Used in cards example. -->
     <style name="MovieCardBadgeStyle" parent="Widget.Leanback.ImageCardView.BadgeStyle">
         <item name="android:src">@drawable/stars_red</item>

samples/SupportLeanbackShowcase/app/src/main/res/values/themes.xml

@@ -35,11 +35,15 @@
     </style>
 
     <style name="Theme.Example.LeanbackWizard" parent="Theme.Leanback.GuidedStep">
-        <item name="guidedActionsContainerStyle">@style/WizardActionsContainerStyle</item>
+        <item name="guidedActionsBackground">@color/guidedstep_actions_background</item>
+    </style>
+
+    <style name="Theme.Example.LeanbackWizard.NoSelector">
+        <item name="guidedActionsSelectorDrawable">@null</item>
     </style>
 
     <style name="Theme.Example.LeanbackDialog" parent="Theme.Leanback.GuidedStep">
-        <item name="guidedActionsContainerStyle">@style/DialogActionsContainerStyle</item>
+        <item name="guidedActionsBackground">@color/guidedstep_dialog_actions_background</item>
     </style>
 
     <style name="Theme.Example.LeanbackPreferences" parent="Theme.Leanback">