8.05 updating sync adapter solution

app/build.gradle

@@ -29,5 +29,7 @@ dependencies {
     compile 'com.android.support:appcompat-v7:22.2.0'
     compile 'com.android.support:design:22.2.0'
     compile 'com.android.support:recyclerview-v7:22.2.0'
+    compile 'com.google.android.apps.muzei:muzei-api:2.0'
     compile 'com.google.android.gms:play-services-gcm:7.5.0'
+    compile 'com.google.android.gms:play-services-location:7.5.0'
 }

app/src/main/AndroidManifest.xml

@@ -39,6 +39,9 @@
         android:protectionLevel="signature" />
     <uses-permission android:name="com.example.android.sunshine.app.permission.C2D_MESSAGE" />
 
+    <!-- Permissions required to use the Place Picker -->
+    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
+
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
@@ -113,6 +116,16 @@
                 <category android:name="com.example.android.sunshine.app" />
             </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"
@@ -125,6 +138,7 @@
                 android:resource="@xml/widget_info_today" />
         </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/LocationEditTextPreference.java

@@ -15,6 +15,7 @@
  */
 package com.example.android.sunshine.app;
 
+import android.app.Activity;
 import android.app.AlertDialog;
 import android.app.Dialog;
 import android.content.Context;
@@ -24,9 +25,17 @@
 import android.text.Editable;
 import android.text.TextWatcher;
 import android.util.AttributeSet;
+import android.view.View;
+import android.view.ViewGroup;
 import android.widget.Button;
 import android.widget.EditText;
 
+import com.google.android.gms.common.ConnectionResult;
+import com.google.android.gms.common.GoogleApiAvailability;
+import com.google.android.gms.common.GooglePlayServicesNotAvailableException;
+import com.google.android.gms.common.GooglePlayServicesRepairableException;
+import com.google.android.gms.location.places.ui.PlacePicker;
+
 public class LocationEditTextPreference extends EditTextPreference {
     static final private int DEFAULT_MINIMUM_LOCATION_LENGTH = 2;
     private int mMinLength;
@@ -42,8 +51,57 @@ public LocationEditTextPreference(Context context, AttributeSet attrs) {
         } finally {
             a.recycle();
         }
+
+        // Check to see if Google Play services is available. The Place Picker API is available
+        // through Google Play services, so if this is false, we'll just carry on as though this
+        // feature does not exist. If it is true, however, we can add a widget to our preference.
+        GoogleApiAvailability apiAvailability = GoogleApiAvailability.getInstance();
+        int resultCode = apiAvailability.isGooglePlayServicesAvailable(getContext());
+        if (resultCode == ConnectionResult.SUCCESS) {
+            // Add the get current location widget to our location preference
+            setWidgetLayoutResource(R.layout.pref_current_location);
+        }
     }
 
+    @Override
+    protected View onCreateView(ViewGroup parent) {
+        View view = super.onCreateView(parent);
+        View currentLocation = view.findViewById(R.id.current_location);
+        currentLocation.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                Context context = getContext();
+
+                // Launch the Place Picker so that the user can specify their location, and then
+                // return the result to SettingsActivity.
+                PlacePicker.IntentBuilder builder = new PlacePicker.IntentBuilder();
+
+
+                // We are in a view right now, not an activity. So we need to get ourselves
+                // an activity that we can use to start our Place Picker intent. By using
+                // SettingsActivity in this way, we can ensure the result of the Place Picker
+                // intent comes to the right place for us to process it.
+                Activity settingsActivity = (SettingsActivity) context;
+                try {
+                    settingsActivity.startActivityForResult(
+                            builder.build(context), SettingsActivity.PLACE_PICKER_REQUEST);
+
+                } catch (GooglePlayServicesNotAvailableException
+                        | GooglePlayServicesRepairableException e) {
+                    // What did you do?? This is why we check Google Play services in onResume!!!
+                    // The difference in these exception types is the difference between pausing
+                    // for a moment to prompt the user to update/install/enable Play services vs
+                    // complete and utter failure.
+                    // If you prefer to manage Google Play services dynamically, then you can do so
+                    // by responding to these exceptions in the right moment. But I prefer a cleaner
+                    // user experience, which is why you check all of this when the app resumes,
+                    // and then disable/enable features based on that availability.
+                }
+            }
+        });
+
+        return view;
+    }
 
     @Override
     protected void showDialog(Bundle state) {

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

@@ -24,9 +24,13 @@
 import android.preference.Preference;
 import android.preference.PreferenceActivity;
 import android.preference.PreferenceManager;
+import android.text.TextUtils;
 
 import com.example.android.sunshine.app.data.WeatherContract;
 import com.example.android.sunshine.app.sync.SunshineSyncAdapter;
+import com.google.android.gms.location.places.Place;
+import com.google.android.gms.location.places.ui.PlacePicker;
+import com.google.android.gms.maps.model.LatLng;
 
 /**
  * A {@link PreferenceActivity} that presents a set of application settings.
@@ -38,6 +42,7 @@
  */
 public class SettingsActivity extends PreferenceActivity
         implements Preference.OnPreferenceChangeListener, SharedPreferences.OnSharedPreferenceChangeListener {
+    protected final static int PLACE_PICKER_REQUEST = 9090;
 
     @Override
     public void onCreate(Bundle savedInstanceState) {
@@ -133,7 +138,12 @@ public boolean onPreferenceChange(Preference preference, Object value) {
     public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
         if ( key.equals(getString(R.string.pref_location_key)) ) {
             // we've changed the location
-            // first clear locationStatus
+            // Wipe out any potential PlacePicker latlng values so that we can use this text entry.
+            SharedPreferences.Editor editor = sharedPreferences.edit();
+            editor.remove(getString(R.string.pref_location_latitude));
+            editor.remove(getString(R.string.pref_location_longitude));
+            editor.commit();
+
             Utility.resetLocationStatus(this);
             SunshineSyncAdapter.syncImmediately(this);
         } else if ( key.equals(getString(R.string.pref_units_key)) ) {
@@ -154,4 +164,48 @@ public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, Strin
     public Intent getParentActivityIntent() {
         return super.getParentActivityIntent().addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
     }
+
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+        // Check to see if the result is from our Place Picker intent
+        if (requestCode == PLACE_PICKER_REQUEST) {
+            // Make sure the request was successful
+            if (resultCode == RESULT_OK) {
+                Place place = PlacePicker.getPlace(data, this);
+                String address = place.getAddress().toString();
+                LatLng latLong = place.getLatLng();
+
+                // If the provided place doesn't have an address, we'll form a display-friendly
+                // string from the latlng values.
+                if (TextUtils.isEmpty(address)) {
+                    address = String.format("(%.2f, %.2f)",latLong.latitude, latLong.longitude);
+                }
+
+                SharedPreferences sharedPreferences =
+                        PreferenceManager.getDefaultSharedPreferences(this);
+                SharedPreferences.Editor editor = sharedPreferences.edit();
+                editor.putString(getString(R.string.pref_location_key), address);
+
+                // Also store the latitude and longitude so that we can use these to get a precise
+                // result from our weather service. We cannot expect the weather service to
+                // understand addresses that Google formats.
+                editor.putFloat(getString(R.string.pref_location_latitude),
+                        (float) latLong.latitude);
+                editor.putFloat(getString(R.string.pref_location_longitude),
+                        (float) latLong.longitude);
+                editor.commit();
+
+                // Tell the SyncAdapter that we've changed the location, so that we can update
+                // our UI with new values. We need to do this manually because we are responding
+                // to the PlacePicker widget result here instead of allowing the
+                // LocationEditTextPreference to handle these changes and invoke our callbacks.
+                Preference locationPreference = findPreference(getString(R.string.pref_location_key));
+                setPreferenceSummary(locationPreference, address);
+                Utility.resetLocationStatus(this);
+                SunshineSyncAdapter.syncImmediately(this);
+            }
+        } else {
+            super.onActivityResult(requestCode, resultCode, data);
+        }
+    }
 }

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

@@ -30,6 +30,30 @@
 import java.util.Locale;
 
 public class Utility {
+    // We'll default our latlong to 0. Yay, "Earth!"
+    public static float DEFAULT_LATLONG = 0F;
+
+    public static boolean isLocationLatLonAvailable(Context context) {
+        SharedPreferences prefs
+                = PreferenceManager.getDefaultSharedPreferences(context);
+        return prefs.contains(context.getString(R.string.pref_location_latitude))
+                && prefs.contains(context.getString(R.string.pref_location_longitude));
+    }
+
+    public static float getLocationLatitude(Context context) {
+        SharedPreferences prefs
+                = PreferenceManager.getDefaultSharedPreferences(context);
+        return prefs.getFloat(context.getString(R.string.pref_location_latitude),
+                DEFAULT_LATLONG);
+    }
+
+    public static float getLocationLongitude(Context context) {
+        SharedPreferences prefs
+                = PreferenceManager.getDefaultSharedPreferences(context);
+        return prefs.getFloat(context.getString(R.string.pref_location_longitude),
+                DEFAULT_LATLONG);
+    }
+
     public static String getPreferredLocation(Context context) {
         SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
         return prefs.getString(context.getString(R.string.pref_location_key),
@@ -339,7 +363,7 @@ public static String getStringForWeatherCondition(Context context, int weatherId
             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 +526,42 @@ public static String getStringForWeatherCondition(Context context, int weatherId
         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();
+    }
+}