Merge "Add developer option for device identifier restrictions"

src/com/android/settings/development/DevelopmentSettingsDashboardFragment.java

@@ -478,6 +478,7 @@ public class DevelopmentSettingsDashboardFragment extends RestrictedDashboardFra
         controllers.add(new FreeformWindowsPreferenceController(context));
         controllers.add(new DesktopModePreferenceController(context));
         controllers.add(new SmsAccessRestrictionPreferenceController(context));
+        controllers.add(new DeviceIdentifierAccessRestrictionsPreferenceController(context));
         controllers.add(new ShortcutManagerThrottlingPreferenceController(context));
         controllers.add(new EnableGnssRawMeasFullTrackingPreferenceController(context));
         controllers.add(new DefaultLaunchPreferenceController(context, "running_apps"));

src/com/android/settings/development/DeviceIdentifierAccessRestrictionsPreferenceController.java

@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2019 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.development;
+
+import android.content.Context;
+import android.provider.DeviceConfig;
+
+import androidx.preference.Preference;
+import androidx.preference.SwitchPreference;
+
+import com.android.settings.core.PreferenceControllerMixin;
+import com.android.settingslib.development.DeveloperOptionsPreferenceController;
+
+public class DeviceIdentifierAccessRestrictionsPreferenceController
+        extends DeveloperOptionsPreferenceController
+        implements Preference.OnPreferenceChangeListener, PreferenceControllerMixin {
+
+    private static final String DEVICE_IDENTIFIER_ACCESS_RESTRICTIONS_KEY =
+            "device_identifier_access_restrictions";
+
+    public DeviceIdentifierAccessRestrictionsPreferenceController(Context context) {
+        super(context);
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return DEVICE_IDENTIFIER_ACCESS_RESTRICTIONS_KEY;
+    }
+
+    @Override
+    public boolean onPreferenceChange(Preference preference, Object newValue) {
+        writeSetting((boolean) newValue);
+        return true;
+    }
+
+    private void writeSetting(boolean isEnabled) {
+        DeviceConfig.setProperty(DeviceConfig.Privacy.NAMESPACE,
+                DeviceConfig.Privacy.PROPERTY_DEVICE_IDENTIFIER_ACCESS_RESTRICTIONS_DISABLED,
+                String.valueOf(!isEnabled), false);
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        boolean isEnabled = !Boolean.parseBoolean(
+                DeviceConfig.getProperty(DeviceConfig.Privacy.NAMESPACE,
+                        DeviceConfig.Privacy.PROPERTY_DEVICE_IDENTIFIER_ACCESS_RESTRICTIONS_DISABLED));
+        ((SwitchPreference) mPreference).setChecked(isEnabled);
+    }
+
+    @Override
+    protected void onDeveloperOptionsSwitchDisabled() {
+        super.onDeveloperOptionsSwitchDisabled();
+        writeSetting(true);
+        ((SwitchPreference) mPreference).setChecked(true);
+    }
+}