UI Tweaks to Zen Mode Voice Activity.

Small cleanup of the UI / strings.
- Cleanup of string constant names.
- Add a specific string for ZenModeVoiceActivity label.
- Change look of list position indicators.
- Add optional header to VoiceSettingsActivity.
- Fix NPE in some cases when disabling Zen mode.

Change-Id: Ic09ee2b1b5a50891b5447c2db0e3de3c475696bf
diff --git a/res/drawable/bg_circle_blue.xml b/res/drawable/bg_voice_position.xml
similarity index 87%
rename from res/drawable/bg_circle_blue.xml
rename to res/drawable/bg_voice_position.xml
index 7f2cb1d..2fb29c2 100644
--- a/res/drawable/bg_circle_blue.xml
+++ b/res/drawable/bg_voice_position.xml
@@ -16,6 +16,6 @@
   -->
 
 <shape xmlns:android="http://schemas.android.com/apk/res/android"
-    android:shape="oval">
-    <solid android:color="@color/blue" />
+    android:shape="rectangle">
+    <solid android:color="@color/voice_interaction_highlight" />
 </shape>
diff --git a/res/layout/voice_interaction.xml b/res/layout/voice_interaction.xml
index 13c4341..ed0cd1a 100644
--- a/res/layout/voice_interaction.xml
+++ b/res/layout/voice_interaction.xml
@@ -14,10 +14,20 @@
      limitations under the License.
 -->
 
-<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:id="@+id/fragment_root"
-    android:paddingLeft="8dp"
-    android:paddingRight="8dp"
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:padding="8dp"
+    android:orientation="vertical"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
-</FrameLayout>
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:textAppearance="?android:attr/textAppearanceMedium"
+        android:textColor="@color/voice_interaction_highlight"
+        android:id="@+id/voice_fragment_header" />
+    <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+        android:id="@+id/voice_fragment_root"
+        android:padding="8dp"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent" />
+</LinearLayout>
diff --git a/res/layout/voice_item_row.xml b/res/layout/voice_item_row.xml
index 8576a57..eca5ac9 100644
--- a/res/layout/voice_item_row.xml
+++ b/res/layout/voice_item_row.xml
@@ -23,8 +23,8 @@
         android:layout_width="fill_parent"
         android:layout_height="wrap_content"
         android:layout_alignParentStart="true"
-        android:layout_marginTop="20dp"
-        android:layout_marginBottom="20dp">
+        android:layout_marginTop="15dp"
+        android:layout_marginBottom="15dp">
 
         <TextView
             android:layout_width="0px"
@@ -33,10 +33,10 @@
             android:id="@+id/voice_item_label" />
 
         <TextView
-            android:layout_width="100px"
-            android:layout_height="100px"
+            android:layout_width="80px"
+            android:layout_height="80px"
             android:gravity="center_horizontal|center_vertical"
-            android:background="@drawable/bg_circle_blue"
+            android:background="@drawable/bg_voice_position"
             android:textAppearance="?android:attr/textAppearanceMediumInverse"
             android:textStyle="bold"
             android:id="@+id/voice_item_position" />
diff --git a/res/values/colors.xml b/res/values/colors.xml
index 6f0352c..88cd3cb 100644
--- a/res/values/colors.xml
+++ b/res/values/colors.xml
@@ -83,4 +83,5 @@
     <color name="confirm_device_credential_dark_background">#263238</color>
     <color name="fab_ripple">#1fffffff</color><!-- 12% white -->
     <color name="fab_shape">#ff009688</color><!-- Teal 500 -->
+    <color name="voice_interaction_highlight">#33b5e5</color>
 </resources>
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 4c9ce79..7c75120 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -6113,26 +6113,41 @@
     <!-- [CHAR LIMIT=60] Zen mode settings: End time option: Summary text value format when end time = next day -->
     <string name="zen_mode_end_time_next_day_summary_format"><xliff:g id="formatted_time" example="7:00 AM">%s</xliff:g> next day</string>
 
+    <!-- [CHAR LIMIT=NONE] Zen mode voice: Activity title for interruption level  -->
+    <string name="zen_mode_interruptions_voice_title">Interruptions</string>
+
+    <!-- [CHAR LIMIT=NONE] Zen mode voice: Header for interruption level  -->
+    <string name="zen_mode_interruptions_voice_header">When calls and notifications arrive</string>
+
     <!-- [CHAR LIMIT=NONE] Zen mode voice: Prompt read for interruption type -->
     <string name="zen_mode_interruptions_voice_prompt">When would you like to be interrupted?</string>
 
     <!-- [CHAR LIMIT=NONE] Zen mode voice: Prompt read for zen mode duration -->
     <string name="zen_mode_duration_voice_prompt">For how long?</string>
 
+    <!-- [CHAR LIMIT=80] Zen mode voice: All interruptions -->
+    <string name="zen_mode_option_voice_all_interruptions">Always interrupt</string>
+
+    <!-- [CHAR LIMIT=NONE] Zen mode voice: Comma delimited synonyms for all interriuptions -->
+    <string name="zen_mode_option_voice_all_interruptions_synonyms">off,all,everything</string>
+
+    <!-- [CHAR LIMIT=80] Zen mode voice: Important interruptions -->
+    <string name="zen_mode_option_voice_important_interruptions">Allow only priority interruptions</string>
+
     <!-- [CHAR LIMIT=NONE] Zen mode voice: Comma delimited synonyms for important interriuptions -->
-    <string name="zen_mode_option_important_voice_synonyms">important,priority,priority notifications</string>
+    <string name="zen_mode_option_voice_important_synonyms">important,priority,priority notifications</string>
+
+    <!-- [CHAR LIMIT=80] Zen mode voice option: Alarms only -->
+    <string name="zen_mode_option_voice_alarms">Allow only alarms</string>
 
     <!-- [CHAR LIMIT=NONE] Zen mode voice: Comma delimited synonyms for alarm interriuptions -->
-    <string name="zen_mode_option_alarms_voice_synonyms">alarms</string>
+    <string name="zen_mode_option_voice_alarms_synonyms">alarms</string>
 
-    <!--  [CHAR LIMIT=60] Zen mode voice: Off [CHAR LIMIT=60] -->
-    <string name="zen_mode_option_off">Off</string>
-
-    <!-- [CHAR LIMIT=NONE] Zen mode voice: Comma delimited synonyms for off interriuptions -->
-    <string name="zen_mode_option_off_voice_synonyms">off,all,everything</string>
+    <!-- [CHAR LIMIT=80] Zen mode voice: No interruptions [CHAR LIMIT=60] -->
+    <string name="zen_mode_option_voice_no_interruptions">Don\'t interrupt</string>
 
     <!-- [CHAR LIMIT=NONE] Zen mode voice: Comma delimited synonyms for no interriuptions -->
-    <string name="zen_mode_option_no_interruptions_voice_synonyms">none,nothing,no interruptions</string>
+    <string name="zen_mode_option_voice_no_interruptions_synonyms">none,nothing,no interruptions</string>
 
     <!-- [CHAR LIMIT=40] Zen mode voice: Label for indefinite mode duration -->
     <string name="zen_mode_duration_indefinte_voice_label">Indefinitely</string>