Improve the default activity type preference

MyTracks/res/layout/activity_type_preference.xml

@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+Copyright 2013 Google Inc.
+
+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.
+-->
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+  android:layout_height="wrap_content"
+  android:layout_width="match_parent"
+  android:paddingLeft="8dp"
+  android:paddingRight="8dp"
+  android:paddingTop="16dp" >
+  <AutoCompleteTextView
+    android:hint="@string/track_edit_activity_type_hint"
+    android:id="@+id/activity_type_preference_text_view"
+    android:layout_height="match_parent"
+    android:layout_weight="1"
+    android:layout_width="0dp"
+    style="@style/EditCategory" />
+  <Spinner
+    android:id="@+id/activity_type_preference_spinner"
+    android:layout_gravity="bottom"
+    android:layout_height="wrap_content"
+    android:layout_width="wrap_content" />
+</LinearLayout>

MyTracks/res/layout/marker_edit.xml

@@ -57,6 +57,7 @@ limitations under the License.
           android:hint="@string/marker_edit_marker_type_hint"
           android:id="@+id/marker_edit_waypoint_marker_type"
           android:imeOptions="actionNext"
+          android:layout_width="match_parent"
           style="@style/EditCategory" />
         <TextView
           android:text="@string/generic_description"

MyTracks/res/layout/track_edit.xml

@@ -40,11 +40,9 @@ limitations under the License.
         android:layout_height="wrap_content"
         android:layout_width="match_parent" >
         <AutoCompleteTextView
-          android:gravity="bottom"
           android:hint="@string/track_edit_activity_type_hint"
           android:id="@+id/track_edit_activity_type"
           android:imeOptions="actionNext"
-          android:layout_gravity="bottom"
           android:layout_height="match_parent"
           android:layout_weight="1"
           android:layout_width="0dp"

MyTracks/res/values/styles.xml

@@ -39,6 +39,9 @@ limitations under the License.
   </style>
   <!-- edit category -->
   <style name="EditCategory" parent="@style/TextMedium">
+    <item name="android:completionThreshold">1</item>
+    <item name="android:gravity">bottom</item>
+    <item name="android:layout_gravity">bottom</item>
     <item name="android:layout_width">match_parent</item>
     <item name="android:selectAllOnFocus">true</item>
     <item name="android:singleLine">true</item>

MyTracks/res/xml/recording_settings.xml

@@ -28,9 +28,8 @@ limitations under the License.
     android:defaultValue="@string/settings_recording_track_name_location_value"
     android:key="@string/track_name_key"
     android:title="@string/settings_recording_track_name_title" />
-  <com.google.android.apps.mytracks.AutoCompleteTextPreference
+  <com.google.android.apps.mytracks.ActivityTypePreference
     android:defaultValue=""
-    android:hint="@string/track_edit_activity_type_hint"
     android:key="@string/default_activity_key"
     android:title="@string/settings_recording_default_activity_title" />
   <com.google.android.apps.mytracks.IntegerListPreference