Added UI widgets for new location settings page

Change-Id: I87eee999a4dd0189609f58d6f3e4ffe517d63a0e

src/com/android/settings/location/LocationMode.java

@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2013 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.android.settings.location;
+
+import android.content.Intent;
+import android.preference.Preference;
+import android.preference.PreferenceScreen;
+
+import com.android.settings.R;
+import com.android.settings.SettingsPreferenceFragment;
+
+/**
+ * A page with 3 radio buttons to choose the location mode.
+ *
+ * There are 3 location modes when location access is enabled:
+ *
+ * High accuracy: use both GPS and network location.
+ *
+ * Battery saving: use network location only to reduce the power consumption.
+ *
+ * Sensors only: use GPS location only.
+ */
+public class LocationMode extends SettingsPreferenceFragment
+        implements Preference.OnPreferenceChangeListener {
+    @Override
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
+        createPreferenceHierarchy();
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+
+        // Make sure we reload the preference hierarchy since some of these settings
+        // depend on others...
+        createPreferenceHierarchy();
+    }
+
+    private PreferenceScreen createPreferenceHierarchy() {
+        PreferenceScreen root = getPreferenceScreen();
+        if (root != null) {
+            root.removeAll();
+        }
+        addPreferencesFromResource(R.xml.location_mode);
+        root = getPreferenceScreen();
+
+        return root;
+    }
+
+    @Override
+    public int getHelpResource() {
+        return R.string.help_url_location_access;
+    }
+
+    @Override
+    public boolean onPreferenceChange(Preference preference, Object newValue) {
+      return true;
+    }
+}