Replaced ContentQueryMap with CursorLoader

- Piggyback a trivial typo fix from previous change

- Fix b/10228666

Change-Id: I96c4f5c434b67caf10b3406eec4f3f7c5cf846e9

2 files changed, 34 insertions, 40 deletions

diff --git a/src/com/android/settings/location/LocationSettingsBase.java b/src/com/android/settings/location/LocationSettingsBase.java
index 8a28039..81e841a 100644
--- a/src/com/android/settings/location/LocationSettingsBase.java
+++ b/src/com/android/settings/location/LocationSettingsBase.java
@@ -16,60 +16,32 @@
 
 package com.android.settings.location;
 
-import android.content.ContentQueryMap;
+import android.app.LoaderManager.LoaderCallbacks;
 import android.content.Context;
+import android.content.CursorLoader;
+import android.content.Loader;
 import android.database.Cursor;
+import android.os.Bundle;
 import android.os.UserManager;
 import android.provider.Settings;
-
 import android.util.Log;
-import com.android.settings.SettingsPreferenceFragment;
 
-import java.util.Observable;
-import java.util.Observer;
+import com.android.settings.SettingsPreferenceFragment;
 
 /**
  * A base class that listens to location settings change and modifies location
  * settings.
  */
-public abstract class LocationSettingsBase extends SettingsPreferenceFragment {
+public abstract class LocationSettingsBase extends SettingsPreferenceFragment
+        implements LoaderCallbacks<Cursor> {
     private static final String TAG = "LocationSettingsBase";
-    private ContentQueryMap mContentQueryMap;
-    private Observer mSettingsObserver;
-
-    @Override
-    public void onStart() {
-        super.onStart();
-        // listen for Location Manager settings changes
-        Cursor settingsCursor = getContentResolver().query(Settings.Secure.CONTENT_URI, null,
-                "(" + Settings.System.NAME + "=?)",
-                new String[] { Settings.Secure.LOCATION_PROVIDERS_ALLOWED },
-                null);
-        mContentQueryMap = new ContentQueryMap(settingsCursor, Settings.System.NAME, true, null);
-        mSettingsObserver = new Observer() {
-            @Override
-            public void update(Observable o, Object arg) {
-                refreshLocationMode();
-            }
-        };
-    }
-
-    @Override
-    public void onResume() {
-        super.onResume();
-        mContentQueryMap.addObserver(mSettingsObserver);
-    }
 
-    @Override
-    public void onPause() {
-        super.onPause();
-        mContentQueryMap.deleteObserver(mSettingsObserver);
-    }
+    private static final int LOADER_ID_LOCATION_MODE = 1;
 
     @Override
-    public void onStop() {
-        super.onStop();
-        mContentQueryMap.close();
+    public void onCreate(Bundle icicle) {
+        super.onCreate(icicle);
+        getLoaderManager().initLoader(LOADER_ID_LOCATION_MODE, null, this);
     }
 
     /** Called when location mode has changed. */
@@ -101,4 +73,26 @@ public abstract class LocationSettingsBase extends SettingsPreferenceFragment {
                 Settings.Secure.LOCATION_MODE_OFF);
         onModeChanged(mode, isRestricted());
     }
+
+    @Override
+    public Loader<Cursor> onCreateLoader(int id, Bundle args) {
+        switch (id) {
+            case LOADER_ID_LOCATION_MODE:
+                return new CursorLoader(getActivity(), Settings.Secure.CONTENT_URI, null,
+                        "(" + Settings.System.NAME + "=?)",
+                        new String[] { Settings.Secure.LOCATION_MODE }, null);
+            default:
+                return null;
+        }
+    }
+
+    @Override
+    public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
+        refreshLocationMode();
+    }
+
+    @Override
+    public void onLoaderReset(Loader<Cursor> loader) {
+        // Nothing to do here.
+    }
 }
diff --git a/src/com/android/settings/location/SettingsInjector.java b/src/com/android/settings/location/SettingsInjector.java
index 69de713..7bd190c 100644
--- a/src/com/android/settings/location/SettingsInjector.java
+++ b/src/com/android/settings/location/SettingsInjector.java
@@ -322,7 +322,7 @@ class SettingsInjector {
                     Log.wtf(TAG, "Unexpected what: " + msg);
             }
 
-            // Decide whether to load addiitonal settings based on the new state. Start by seeing
+            // Decide whether to load additional settings based on the new state. Start by seeing
             // if we have headroom to load another setting.
             if (mSettingsBeingLoaded.size() > 0 || mTimedOutSettings.size() > 1) {
                 // Don't load any more settings until one of the pending settings has completed.