2 files changed, 54 insertions, 2 deletions
diff --git a/java/com/android/dialer/contacts/displaypreference/ContactDisplayPreferencesImpl.java b/java/com/android/dialer/contacts/displaypreference/ContactDisplayPreferencesImpl.java
index 6072cc12c..4f67b1759 100644
--- a/java/com/android/dialer/contacts/displaypreference/ContactDisplayPreferencesImpl.java
+++ b/java/com/android/dialer/contacts/displaypreference/ContactDisplayPreferencesImpl.java
@@ -23,7 +23,10 @@ import android.preference.PreferenceManager;
 import com.android.dialer.inject.ApplicationContext;
 import javax.inject.Inject;
 
-/** Implementation of {@link ContactDisplayPreferences} backed by a {@link SharedPreferences} */
+/**
+ * Implementation of {@link ContactDisplayPreferences} backed by a {@link SharedPreferences}. Can
+ * only be instantiated when the device is unlocked.
+ */
 public final class ContactDisplayPreferencesImpl implements ContactDisplayPreferences {
 
   private final Context appContext;
@@ -35,7 +38,7 @@ public final class ContactDisplayPreferencesImpl implements ContactDisplayPrefer
   ContactDisplayPreferencesImpl(@ApplicationContext Context appContext) {
     this.appContext = appContext;
     // @Unencrypted preference would be a better choice, but Android Preference only supports the
-    // default file. Names cannot be shown on @Unencrypted anyway.
+    // default file. Stub should be used instead when device is locked.
     this.sharedPreferences = PreferenceManager.getDefaultSharedPreferences(appContext);
     displayOrderKey = appContext.getString(R.string.display_options_view_names_as_key);
     sortOrderKey = appContext.getString(R.string.display_options_sort_list_by_key);
diff --git a/java/com/android/dialer/contacts/displaypreference/ContactDisplayPreferencesStub.java b/java/com/android/dialer/contacts/displaypreference/ContactDisplayPreferencesStub.java
new file mode 100644
index 000000000..a42a94bac
--- /dev/null
+++ b/java/com/android/dialer/contacts/displaypreference/ContactDisplayPreferencesStub.java
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2018 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.dialer.contacts.displaypreference;
+
+import javax.inject.Inject;
+
+/**
+ * Stub implementation of {@link ContactDisplayPreferences} that always returns primary. Used when
+ * the device is locked and regular storage is not available.
+ */
+public final class ContactDisplayPreferencesStub implements ContactDisplayPreferences {
+
+  @Inject
+  ContactDisplayPreferencesStub() {}
+
+  @Override
+  public DisplayOrder getDisplayOrder() {
+    return DisplayOrder.PRIMARY;
+  }
+
+  @Override
+  public void setDisplayOrder(DisplayOrder displayOrder) {
+    // Do nothing
+  }
+
+  @Override
+  public SortOrder getSortOrder() {
+    return SortOrder.BY_PRIMARY;
+  }
+
+  @Override
+  public void setSortOrder(SortOrder sortOrder) {
+    // Do nothing
+  }
+}