Add a Muzei extension, changing the wallpaper with the weather

Requires installation of Muzei: https://play.google.com/store/apps/details?id=net.nurik.roman.muzei

app/build.gradle

@@ -29,4 +29,5 @@ dependencies {
     compile 'com.android.support:design:22.2.0'
     compile 'com.android.support:recyclerview-v7:22.2.0'
     compile 'com.google.android.gms:play-services-gcm:7.0.0'
+    compile 'com.google.android.apps.muzei:muzei-api:2.0'
 }

app/src/main/AndroidManifest.xml

@@ -110,6 +110,17 @@
             </intent-filter>
         </receiver>
 
+        <!-- Muzei Extension -->
+        <service android:name=".muzei.WeatherMuzeiSource"
+            android:icon="@drawable/ic_muzei"
+            android:label="@string/app_name"
+            android:description="@string/muzei_description" >
+            <intent-filter>
+                <action android:name="com.google.android.apps.muzei.api.MuzeiArtSource" />
+            </intent-filter>
+            <meta-data android:name="color" android:value="@color/primary" />
+        </service>
+
         <!-- Today Widget -->
         <receiver
             android:name=".widget.TodayWidgetProvider"
@@ -123,6 +134,7 @@
         </receiver>
         <service android:name=".widget.TodayWidgetIntentService" />
 
+        <!-- Detail Widget -->
         <receiver
             android:name=".widget.DetailWidgetProvider"
             android:label="@string/title_widget_detail"

app/src/main/java/com/example/android/sunshine/app/Utility.java

@@ -339,7 +339,7 @@ public class Utility {
             stringId = R.string.condition_2xx;
         } else if (weatherId >= 300 && weatherId <= 321) {
             stringId = R.string.condition_3xx;
-        } else switch(weatherId) {
+        } else switch (weatherId) {
             case 500:
                 stringId = R.string.condition_500;
                 break;
@@ -502,6 +502,42 @@ public class Utility {
         return context.getString(stringId);
     }
 
+    /*
+     * Helper method to provide the correct image according to the weather condition id returned
+     * by the OpenWeatherMap call.
+     *
+     * @param weatherId from OpenWeatherMap API response
+     * @return A string URL to an appropriate image or null if no mapping is found
+     */
+    public static String getImageUrlForWeatherCondition(int weatherId) {
+        // Based on weather code data found at:
+        // http://bugs.openweathermap.org/projects/api/wiki/Weather_Condition_Codes
+        if (weatherId >= 200 && weatherId <= 232) {
+            return "http://upload.wikimedia.org/wikipedia/commons/2/28/Thunderstorm_in_Annemasse,_France.jpg";
+        } else if (weatherId >= 300 && weatherId <= 321) {
+            return "http://upload.wikimedia.org/wikipedia/commons/a/a0/Rain_on_leaf_504605006.jpg";
+        } else if (weatherId >= 500 && weatherId <= 504) {
+            return "http://upload.wikimedia.org/wikipedia/commons/6/6c/Rain-on-Thassos.jpg";
+        } else if (weatherId == 511) {
+            return "http://upload.wikimedia.org/wikipedia/commons/b/b8/Fresh_snow.JPG";
+        } else if (weatherId >= 520 && weatherId <= 531) {
+            return "http://upload.wikimedia.org/wikipedia/commons/6/6c/Rain-on-Thassos.jpg";
+        } else if (weatherId >= 600 && weatherId <= 622) {
+            return "http://upload.wikimedia.org/wikipedia/commons/b/b8/Fresh_snow.JPG";
+        } else if (weatherId >= 701 && weatherId <= 761) {
+            return "http://upload.wikimedia.org/wikipedia/commons/e/e6/Westminster_fog_-_London_-_UK.jpg";
+        } else if (weatherId == 761 || weatherId == 781) {
+            return "http://upload.wikimedia.org/wikipedia/commons/d/dc/Raised_dust_ahead_of_a_severe_thunderstorm_1.jpg";
+        } else if (weatherId == 800) {
+            return "http://upload.wikimedia.org/wikipedia/commons/7/7e/A_few_trees_and_the_sun_(6009964513).jpg";
+        } else if (weatherId == 801) {
+            return "http://upload.wikimedia.org/wikipedia/commons/e/e7/Cloudy_Blue_Sky_(5031259890).jpg";
+        } else if (weatherId >= 802 && weatherId <= 804) {
+            return "http://upload.wikimedia.org/wikipedia/commons/5/54/Cloudy_hills_in_Elis,_Greece_2.jpg";
+        }
+        return null;
+    }
+
     /**
      * Returns true if the network is available or about to become available.
      *

app/src/main/java/com/example/android/sunshine/app/muzei/WeatherMuzeiSource.java

@@ -0,0 +1,79 @@
+/*
+ * 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.
+ */
+package com.example.android.sunshine.app.muzei;
+
+import android.content.Intent;
+import android.database.Cursor;
+import android.net.Uri;
+
+import com.example.android.sunshine.app.MainActivity;
+import com.example.android.sunshine.app.Utility;
+import com.example.android.sunshine.app.data.WeatherContract;
+import com.example.android.sunshine.app.sync.SunshineSyncAdapter;
+import com.google.android.apps.muzei.api.Artwork;
+import com.google.android.apps.muzei.api.MuzeiArtSource;
+
+/**
+ * Muzei source that changes your background based on the current weather conditions
+ */
+public class WeatherMuzeiSource extends MuzeiArtSource {
+    private static final String[] FORECAST_COLUMNS = new String[]{
+            WeatherContract.WeatherEntry.COLUMN_WEATHER_ID,
+            WeatherContract.WeatherEntry.COLUMN_SHORT_DESC
+    };
+    // these indices must match the projection
+    private static final int INDEX_WEATHER_ID = 0;
+    private static final int INDEX_SHORT_DESC = 1;
+
+    public WeatherMuzeiSource() {
+        super("WeatherMuzeiSource");
+    }
+
+    @Override
+    protected void onHandleIntent(Intent intent) {
+        super.onHandleIntent(intent);
+        boolean dataUpdated = intent != null &&
+                SunshineSyncAdapter.ACTION_DATA_UPDATED.equals(intent.getAction());
+        if (dataUpdated && isEnabled()) {
+            onUpdate(UPDATE_REASON_OTHER);
+        }
+    }
+
+    @Override
+    protected void onUpdate(int reason) {
+        String location = Utility.getPreferredLocation(this);
+        Uri weatherForLocationUri = WeatherContract.WeatherEntry.buildWeatherLocationWithStartDate(
+                location, System.currentTimeMillis());
+        Cursor cursor = getContentResolver().query(weatherForLocationUri, FORECAST_COLUMNS, null,
+                null, WeatherContract.WeatherEntry.COLUMN_DATE + " ASC");
+        if (cursor.moveToFirst()) {
+            int weatherId = cursor.getInt(INDEX_WEATHER_ID);
+            String desc = cursor.getString(INDEX_SHORT_DESC);
+
+            String imageUrl = Utility.getImageUrlForWeatherCondition(weatherId);
+            // Only publish a new wallpaper if we have a valid image
+            if (imageUrl != null) {
+                publishArtwork(new Artwork.Builder()
+                        .imageUri(Uri.parse(imageUrl))
+                        .title(desc)
+                        .byline(location)
+                        .viewIntent(new Intent(this, MainActivity.class))
+                        .build());
+            }
+        }
+        cursor.close();
+    }
+}

app/src/main/java/com/example/android/sunshine/app/sync/SunshineSyncAdapter.java

@@ -34,6 +34,7 @@ import com.example.android.sunshine.app.MainActivity;
 import com.example.android.sunshine.app.R;
 import com.example.android.sunshine.app.Utility;
 import com.example.android.sunshine.app.data.WeatherContract;
+import com.example.android.sunshine.app.muzei.WeatherMuzeiSource;
 
 import org.json.JSONArray;
 import org.json.JSONException;
@@ -341,6 +342,7 @@ public class SunshineSyncAdapter extends AbstractThreadedSyncAdapter {
                         new String[] {Long.toString(dayTime.setJulianDay(julianStartDay-1))});
 
                 updateWidgets();
+                updateMuzei();
                 notifyWeather();
             }
             Log.d(LOG_TAG, "Sync Complete. " + cVVector.size() + " Inserted");
@@ -361,6 +363,16 @@ public class SunshineSyncAdapter extends AbstractThreadedSyncAdapter {
         context.sendBroadcast(dataUpdatedIntent);
     }
 
+    private void updateMuzei() {
+        // Muzei is only compatible with Jelly Bean MR1+ devices, so there's no need to update the
+        // Muzei background on lower API level devices
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
+            Context context = getContext();
+            context.startService(new Intent(ACTION_DATA_UPDATED)
+                    .setClass(context, WeatherMuzeiSource.class));
+        }
+    }
+
     private void notifyWeather() {
         Context context = getContext();
         //checking the last update and notify if it' the first of the day

app/src/main/res/values/strings.xml

@@ -140,6 +140,9 @@
     <string name="title_widget_today">Sunshine Today</string>
     <string name="title_widget_detail">Sunshine Details</string>
 
+    <!-- Strings related to Muzei Source -->
+    <string name="muzei_description">Today\'s weather</string>
+
     <!-- Empty Weather Database -->
     <string name="empty_forecast_list">No Weather Information Available</string>
     <string name="empty_forecast_list_no_network">No weather information available. The network is not available to fetch weather data.</string>