From f0ffb21ef567a27a5cd982f5c753c077d55ca537 Mon Sep 17 00:00:00 2001
From: Jan-Felix Schmakeit <jfschmakeit@google.com>
Date: Mon, 6 Jul 2015 11:00:26 +1000
Subject: [PATCH] Add Ambient mode support to AndroidWearMap sample.

Change-Id: I7bfdfdff6855234d81a1518ce5c10901d16cfa85
---
 AndroidWearMap/README.md                      |  4 +-
 AndroidWearMap/Wearable/build.gradle          | 11 ++++--
 .../Wearable/src/main/AndroidManifest.xml     | 16 ++------
 .../example/androidwearmap/MainActivity.java  | 38 ++++++++++++++++---
 .../src/main/res/layout/activity_main.xml     | 32 ++++++++--------
 AndroidWearMap/build.gradle                   |  2 +-
 6 files changed, 64 insertions(+), 39 deletions(-)

diff --git a/AndroidWearMap/README.md b/AndroidWearMap/README.md
index 51e1cff33..15a7f502a 100644
--- a/AndroidWearMap/README.md
+++ b/AndroidWearMap/README.md
@@ -3,12 +3,12 @@ Android Wear Maps Sample
 
 This sample uses the [Google Maps Android API v2](https://developers.google.com/maps/documentation/android/) 
 to display a map on Android Wear. It shows the basic setup required for a
-gradle-based Android Studio project.
+gradle-based Android Studio project that [supports ambient mode](https://developer.android.com/training/wearables/apps/always-on.html).
 
 Pre-requisites
 --------------
 
-- Android SDK v21
+- Android SDK v22
 - Latest Android Build Tools
 - Android Support Repository
 - Android Wear emulator or device
diff --git a/AndroidWearMap/Wearable/build.gradle b/AndroidWearMap/Wearable/build.gradle
index 0361f1c2e..622ad8dda 100644
--- a/AndroidWearMap/Wearable/build.gradle
+++ b/AndroidWearMap/Wearable/build.gradle
@@ -40,10 +40,15 @@ repositories {
     jcenter()
 }
 
-
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
 
-    compile 'com.google.android.support:wearable:1.1.0'
-    compile 'com.google.android.gms:play-services:7.8.0'
+    // Required for DismissOverlayView to exit full screen wearable app.
+    compile 'com.google.android.support:wearable:1.2.0'
+
+    // Required to support ambient mode.
+    provided 'com.google.android.wearable:wearable:1.0.0'
+
+    // Include the Google Maps Android API from Google Play Services.
+    compile 'com.google.android.gms:play-services-maps:8.1.0'
 }
diff --git a/AndroidWearMap/Wearable/src/main/AndroidManifest.xml b/AndroidWearMap/Wearable/src/main/AndroidManifest.xml
index c08598c91..a9b90e25c 100644
--- a/AndroidWearMap/Wearable/src/main/AndroidManifest.xml
+++ b/AndroidWearMap/Wearable/src/main/AndroidManifest.xml
@@ -21,14 +21,8 @@
     <!-- Mark this app as an Android Wear app. -->
     <uses-feature android:name="android.hardware.type.watch" />
 
-    <!-- Permissions and features required for the Android Maps API v2 -->
-    <uses-permission android:name="android.permission.INTERNET"/>
-    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
-    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
-
-    <uses-feature
-            android:glEsVersion="0x00020000"
-            android:required="true"/>
+    <!-- Permission required for ambient mode to keep the application running. -->
+    <uses-permission android:name="android.permission.WAKE_LOCK" />
 
     <application
         android:allowBackup="true"
@@ -40,10 +34,8 @@
         <meta-data android:name="com.google.android.geo.API_KEY"
                    android:value="@string/google_maps_key"/>
 
-        <!-- Meta data required for Google Play Services -->
-        <meta-data
-                android:name="com.google.android.gms.version"
-                android:value="@integer/google_play_services_version" />
+        <!-- Reference the wearable shared library required to support ambient mode. -->
+        <uses-library android:name="com.google.android.wearable" android:required="false" />
 
         <activity
             android:name=".MainActivity"
diff --git a/AndroidWearMap/Wearable/src/main/java/com/example/androidwearmap/MainActivity.java b/AndroidWearMap/Wearable/src/main/java/com/example/androidwearmap/MainActivity.java
index 6d6e11a12..90e5a70f1 100644
--- a/AndroidWearMap/Wearable/src/main/java/com/example/androidwearmap/MainActivity.java
+++ b/AndroidWearMap/Wearable/src/main/java/com/example/androidwearmap/MainActivity.java
@@ -23,8 +23,8 @@
 import com.google.android.gms.maps.model.LatLng;
 import com.google.android.gms.maps.model.MarkerOptions;
 
-import android.app.Activity;
 import android.os.Bundle;
+import android.support.wearable.activity.WearableActivity;
 import android.support.wearable.view.DismissOverlayView;
 import android.view.View;
 import android.view.WindowInsets;
@@ -33,7 +33,7 @@
 /**
  * Sample that shows how to set up a basic Google Map on Android Wear.
  */
-public class MainActivity extends Activity implements OnMapReadyCallback,
+public class MainActivity extends WearableActivity implements OnMapReadyCallback,
         GoogleMap.OnMapLongClickListener {
 
     private static final LatLng SYDNEY = new LatLng(-33.85704, 151.21522);
@@ -51,12 +51,19 @@ public class MainActivity extends Activity implements OnMapReadyCallback,
      */
     private GoogleMap mMap;
 
+    private MapFragment mMapFragment;
+
     public void onCreate(Bundle savedState) {
         super.onCreate(savedState);
 
         // Set the layout. It only contains a SupportMapFragment and a DismissOverlay.
         setContentView(R.layout.activity_main);
 
+        // Enable ambient support, so the map remains visible in simplified, low-color display
+        // when the user is no longer actively using the app but the app is still visible on the
+        // watch face.
+        setAmbientEnabled();
+
         // Retrieve the containers for the root of the layout and the map. Margins will need to be
         // set on them to account for the system window insets.
         final FrameLayout topFrameLayout = (FrameLayout) findViewById(R.id.root_container);
@@ -90,10 +97,31 @@ public WindowInsets onApplyWindowInsets(View v, WindowInsets insets) {
         mDismissOverlay.showIntroIfNecessary();
 
         // Obtain the MapFragment and set the async listener to be notified when the map is ready.
-        MapFragment mapFragment =
-                (MapFragment) getFragmentManager().findFragmentById(R.id.map);
-        mapFragment.getMapAsync(this);
+        mMapFragment = (MapFragment) getFragmentManager()
+                .findFragmentById(R.id.map);
+        mMapFragment.getMapAsync(this);
+
+    }
+
+    /**
+     * Starts ambient mode on the map.
+     * The API swaps to a non-interactive and low-color rendering of the map when the user is no
+     * longer actively using the app.
+     */
+    @Override
+    public void onEnterAmbient(Bundle ambientDetails) {
+        super.onEnterAmbient(ambientDetails);
+        mMapFragment.onEnterAmbient(ambientDetails);
+    }
 
+    /**
+     * Exits ambient mode on the map.
+     * The API swaps to the normal rendering of the map when the user starts actively using the app.
+     */
+    @Override
+    public void onExitAmbient() {
+        super.onExitAmbient();
+        mMapFragment.onExitAmbient();
     }
 
     @Override
diff --git a/AndroidWearMap/Wearable/src/main/res/layout/activity_main.xml b/AndroidWearMap/Wearable/src/main/res/layout/activity_main.xml
index 9d396e0cd..7c3ea9038 100644
--- a/AndroidWearMap/Wearable/src/main/res/layout/activity_main.xml
+++ b/AndroidWearMap/Wearable/src/main/res/layout/activity_main.xml
@@ -17,28 +17,28 @@
   limitations under the License.
   -->
 
-<FrameLayout
-        xmlns:android="http://schemas.android.com/apk/res/android"
-        xmlns:map="http://schemas.android.com/apk/res-auto"
-        android:id="@+id/root_container"
-        android:layout_height="match_parent"
-        android:layout_width="match_parent">
+<FrameLayout android:id="@+id/root_container"
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:map="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
 
     <FrameLayout
-            android:id="@+id/map_container"
-            android:layout_width="match_parent"
-            android:layout_height="match_parent">
+        android:id="@+id/map_container"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
 
         <fragment
-                android:id="@+id/map"
-                android:layout_width="match_parent"
-                android:layout_height="match_parent"
-                android:name="com.google.android.gms.maps.MapFragment"/>
+            android:id="@+id/map"
+            android:name="com.google.android.gms.maps.MapFragment"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            map:ambientEnabled="true" />
 
     </FrameLayout>
 
     <android.support.wearable.view.DismissOverlayView
-            android:id="@+id/dismiss_overlay"
-            android:layout_height="match_parent"
-            android:layout_width="match_parent"/>
+        android:id="@+id/dismiss_overlay"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent" />
 </FrameLayout>
\ No newline at end of file
diff --git a/AndroidWearMap/build.gradle b/AndroidWearMap/build.gradle
index 5fa424a98..702559461 100644
--- a/AndroidWearMap/build.gradle
+++ b/AndroidWearMap/build.gradle
@@ -21,7 +21,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:1.0.0'
+        classpath 'com.android.tools.build:gradle:1.3.0'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files