diff --git a/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/BasicStringFormatter.php b/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/BasicStringFormatter.php
index c03b96d..7966e85 100644
--- a/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/BasicStringFormatter.php
+++ b/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/BasicStringFormatter.php
@@ -31,7 +31,7 @@ class BasicStringFormatter extends FormatterBase {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = array();
 
     foreach ($items as $delta => $item) {
diff --git a/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/BooleanFormatter.php b/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/BooleanFormatter.php
index b1d2d8b..f3fe774 100644
--- a/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/BooleanFormatter.php
+++ b/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/BooleanFormatter.php
@@ -116,7 +116,7 @@ public function settingsForm(array $form, FormStateInterface $form_state) {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = [];
 
     $formats = $this->getOutputFormats();
diff --git a/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/EntityReferenceEntityFormatter.php b/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/EntityReferenceEntityFormatter.php
index 1328f65..a545d9a 100644
--- a/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/EntityReferenceEntityFormatter.php
+++ b/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/EntityReferenceEntityFormatter.php
@@ -119,11 +119,14 @@ public function settingsSummary() {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $view_mode = $this->getSetting('view_mode');
     $elements = array();
+    if (empty($langcode)) {
+      $langcode = \Drupal::languageManager()->getCurrentLanguage(LanguageInterface::TYPE_CONTENT)->getId();
+    }
 
-    foreach ($this->getEntitiesToView($items) as $delta => $entity) {
+    foreach ($this->getEntitiesToView($items, $langcode) as $delta => $entity) {
       // Protect ourselves from recursive rendering.
       static $depth = 0;
       $depth++;
diff --git a/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/EntityReferenceIdFormatter.php b/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/EntityReferenceIdFormatter.php
index 69b5b9f..428c296 100644
--- a/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/EntityReferenceIdFormatter.php
+++ b/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/EntityReferenceIdFormatter.php
@@ -27,10 +27,13 @@ class EntityReferenceIdFormatter extends EntityReferenceFormatterBase {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = array();
+    if (empty($langcode)) {
+      $langcode = \Drupal::languageManager()->getCurrentLanguage(LanguageInterface::TYPE_CONTENT)->getId();
+    }
 
-    foreach ($this->getEntitiesToView($items) as $delta => $entity) {
+    foreach ($this->getEntitiesToView($items, $langcode) as $delta => $entity) {
       if ($entity->id()) {
         $elements[$delta] = array(
           '#markup' => SafeMarkup::checkPlain($entity->id()),
diff --git a/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/EntityReferenceLabelFormatter.php b/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/EntityReferenceLabelFormatter.php
index 6b442f3..2c8657f 100644
--- a/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/EntityReferenceLabelFormatter.php
+++ b/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/EntityReferenceLabelFormatter.php
@@ -65,7 +65,7 @@ public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = array();
     $output_as_link = $this->getSetting('link');
     if (empty($langcode)) {
-      $langcode = $this->languageManager->getCurrentLanguage(LanguageInterface::TYPE_CONTENT)->getId();
+      $langcode = \Drupal::languageManager()->getCurrentLanguage(LanguageInterface::TYPE_CONTENT)->getId();
     }
 
     foreach ($this->getEntitiesToView($items, $langcode) as $delta => $entity) {
diff --git a/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/MailToFormatter.php b/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/MailToFormatter.php
index 19311b5..bc9776a 100644
--- a/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/MailToFormatter.php
+++ b/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/MailToFormatter.php
@@ -27,7 +27,7 @@ class MailToFormatter extends FormatterBase {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = array();
 
     foreach ($items as $delta => $item) {
diff --git a/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/NumericFormatterBase.php b/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/NumericFormatterBase.php
index c30a9d2..51f2969 100644
--- a/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/NumericFormatterBase.php
+++ b/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/NumericFormatterBase.php
@@ -66,7 +66,7 @@ public function settingsSummary() {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = array();
     $settings = $this->getFieldSettings();
 
diff --git a/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/NumericUnformattedFormatter.php b/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/NumericUnformattedFormatter.php
index 55d9dbf..2a90e11 100644
--- a/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/NumericUnformattedFormatter.php
+++ b/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/NumericUnformattedFormatter.php
@@ -28,7 +28,7 @@ class NumericUnformattedFormatter extends FormatterBase {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = array();
 
     foreach ($items as $delta => $item) {
diff --git a/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/TimestampAgoFormatter.php b/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/TimestampAgoFormatter.php
index 90dfadc..808a24d 100644
--- a/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/TimestampAgoFormatter.php
+++ b/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/TimestampAgoFormatter.php
@@ -153,7 +153,7 @@ public function settingsSummary() {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = array();
 
     foreach ($items as $delta => $item) {
diff --git a/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/UriLinkFormatter.php b/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/UriLinkFormatter.php
index 51e0c3b..1f4ee96 100644
--- a/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/UriLinkFormatter.php
+++ b/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/UriLinkFormatter.php
@@ -27,7 +27,7 @@ class UriLinkFormatter extends FormatterBase {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = array();
 
     foreach ($items as $delta => $item) {
diff --git a/core/modules/aggregator/src/Plugin/Field/FieldFormatter/AggregatorTitleFormatter.php b/core/modules/aggregator/src/Plugin/Field/FieldFormatter/AggregatorTitleFormatter.php
index 6882aed..b3c80bf 100644
--- a/core/modules/aggregator/src/Plugin/Field/FieldFormatter/AggregatorTitleFormatter.php
+++ b/core/modules/aggregator/src/Plugin/Field/FieldFormatter/AggregatorTitleFormatter.php
@@ -54,7 +54,7 @@ public function settingsForm(array $form, FormStateInterface $form_state) {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = [];
 
     if ($items->getEntity()->getEntityTypeId() == 'aggregator_feed') {
diff --git a/core/modules/aggregator/src/Plugin/Field/FieldFormatter/AggregatorXSSFormatter.php b/core/modules/aggregator/src/Plugin/Field/FieldFormatter/AggregatorXSSFormatter.php
index 58d31e1..2ea4067 100644
--- a/core/modules/aggregator/src/Plugin/Field/FieldFormatter/AggregatorXSSFormatter.php
+++ b/core/modules/aggregator/src/Plugin/Field/FieldFormatter/AggregatorXSSFormatter.php
@@ -30,7 +30,7 @@ class AggregatorXSSFormatter extends FormatterBase {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = [];
 
     foreach ($items as $delta => $item) {
diff --git a/core/modules/comment/src/Plugin/Field/FieldFormatter/AuthorNameFormatter.php b/core/modules/comment/src/Plugin/Field/FieldFormatter/AuthorNameFormatter.php
index 6772f9b..3e317d0 100644
--- a/core/modules/comment/src/Plugin/Field/FieldFormatter/AuthorNameFormatter.php
+++ b/core/modules/comment/src/Plugin/Field/FieldFormatter/AuthorNameFormatter.php
@@ -28,7 +28,7 @@ class AuthorNameFormatter extends FormatterBase {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = array();
 
     foreach ($items as $delta => $item) {
diff --git a/core/modules/comment/src/Plugin/Field/FieldFormatter/CommentDefaultFormatter.php b/core/modules/comment/src/Plugin/Field/FieldFormatter/CommentDefaultFormatter.php
index 6d98bef..b39f201 100644
--- a/core/modules/comment/src/Plugin/Field/FieldFormatter/CommentDefaultFormatter.php
+++ b/core/modules/comment/src/Plugin/Field/FieldFormatter/CommentDefaultFormatter.php
@@ -137,7 +137,7 @@ public function __construct($plugin_id, $plugin_definition, FieldDefinitionInter
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = array();
     $output = array();
 
diff --git a/core/modules/datetime/src/Plugin/Field/FieldFormatter/DateTimeCustomFormatter.php b/core/modules/datetime/src/Plugin/Field/FieldFormatter/DateTimeCustomFormatter.php
index 9b3669e..7533297 100644
--- a/core/modules/datetime/src/Plugin/Field/FieldFormatter/DateTimeCustomFormatter.php
+++ b/core/modules/datetime/src/Plugin/Field/FieldFormatter/DateTimeCustomFormatter.php
@@ -36,7 +36,7 @@ public static function defaultSettings() {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = array();
 
     foreach ($items as $delta => $item) {
diff --git a/core/modules/datetime/src/Plugin/Field/FieldFormatter/DateTimeDefaultFormatter.php b/core/modules/datetime/src/Plugin/Field/FieldFormatter/DateTimeDefaultFormatter.php
index 9154037..e78e8b1 100644
--- a/core/modules/datetime/src/Plugin/Field/FieldFormatter/DateTimeDefaultFormatter.php
+++ b/core/modules/datetime/src/Plugin/Field/FieldFormatter/DateTimeDefaultFormatter.php
@@ -36,7 +36,7 @@ public static function defaultSettings() {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = array();
 
     foreach ($items as $delta => $item) {
diff --git a/core/modules/datetime/src/Plugin/Field/FieldFormatter/DateTimePlainFormatter.php b/core/modules/datetime/src/Plugin/Field/FieldFormatter/DateTimePlainFormatter.php
index b92c07c..150afcc 100644
--- a/core/modules/datetime/src/Plugin/Field/FieldFormatter/DateTimePlainFormatter.php
+++ b/core/modules/datetime/src/Plugin/Field/FieldFormatter/DateTimePlainFormatter.php
@@ -25,7 +25,7 @@ class DateTimePlainFormatter extends DateTimeFormatterBase {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = array();
 
     foreach ($items as $delta => $item) {
diff --git a/core/modules/datetime/src/Plugin/Field/FieldFormatter/DateTimeTimeAgoFormatter.php b/core/modules/datetime/src/Plugin/Field/FieldFormatter/DateTimeTimeAgoFormatter.php
index 0bc56c6..edc0cac 100644
--- a/core/modules/datetime/src/Plugin/Field/FieldFormatter/DateTimeTimeAgoFormatter.php
+++ b/core/modules/datetime/src/Plugin/Field/FieldFormatter/DateTimeTimeAgoFormatter.php
@@ -107,7 +107,7 @@ public static function create(ContainerInterface $container, array $configuratio
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = array();
 
     foreach ($items as $delta => $item) {
diff --git a/core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldApplicableFormatter.php b/core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldApplicableFormatter.php
index 24704e1..1d70ec2 100644
--- a/core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldApplicableFormatter.php
+++ b/core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldApplicableFormatter.php
@@ -38,7 +38,7 @@ public static function isApplicable(FieldDefinitionInterface $field_definition)
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     return array('#markup' => 'Nothing to see here');
   }
 }
diff --git a/core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldDefaultFormatter.php b/core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldDefaultFormatter.php
index 1bf2260..ea52b40 100644
--- a/core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldDefaultFormatter.php
+++ b/core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldDefaultFormatter.php
@@ -62,7 +62,7 @@ public function settingsSummary() {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = array();
 
     foreach ($items as $delta => $item) {
diff --git a/core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldEmptyFormatter.php b/core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldEmptyFormatter.php
index bee7d50..89bdfa8 100644
--- a/core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldEmptyFormatter.php
+++ b/core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldEmptyFormatter.php
@@ -35,7 +35,7 @@ public static function defaultSettings() {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = array();
 
     if ($items->isEmpty()) {
diff --git a/core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldEmptySettingFormatter.php b/core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldEmptySettingFormatter.php
index 1f076f7..a9eafd4 100644
--- a/core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldEmptySettingFormatter.php
+++ b/core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldEmptySettingFormatter.php
@@ -63,7 +63,7 @@ public function settingsSummary() {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = array();
 
     if (!empty($items)) {
diff --git a/core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldMultipleFormatter.php b/core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldMultipleFormatter.php
index 20f7796..2cf5f2d 100644
--- a/core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldMultipleFormatter.php
+++ b/core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldMultipleFormatter.php
@@ -63,7 +63,7 @@ public function settingsSummary() {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = array();
 
     if (!empty($items)) {
diff --git a/core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldNoSettingsFormatter.php b/core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldNoSettingsFormatter.php
index 4ab58f1..3cd461e 100644
--- a/core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldNoSettingsFormatter.php
+++ b/core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldNoSettingsFormatter.php
@@ -27,7 +27,7 @@ class TestFieldNoSettingsFormatter extends FormatterBase {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = array();
 
     foreach ($items as $delta => $item) {
diff --git a/core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldPrepareViewFormatter.php b/core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldPrepareViewFormatter.php
index aaf2bf2..d474f39 100644
--- a/core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldPrepareViewFormatter.php
+++ b/core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldPrepareViewFormatter.php
@@ -75,7 +75,7 @@ public function prepareView(array $entities_items) {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = array();
 
     foreach ($items as $delta => $item) {
diff --git a/core/modules/file/src/Plugin/Field/FieldFormatter/BaseFieldFileFormatterBase.php b/core/modules/file/src/Plugin/Field/FieldFormatter/BaseFieldFileFormatterBase.php
index 8654712..68be32d 100644
--- a/core/modules/file/src/Plugin/Field/FieldFormatter/BaseFieldFileFormatterBase.php
+++ b/core/modules/file/src/Plugin/Field/FieldFormatter/BaseFieldFileFormatterBase.php
@@ -46,7 +46,7 @@ public function settingsForm(array $form, FormStateInterface $form_state) {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = [];
 
     $url = NULL;
diff --git a/core/modules/file/src/Plugin/Field/FieldFormatter/FileSize.php b/core/modules/file/src/Plugin/Field/FieldFormatter/FileSize.php
index 27973da..002b654 100644
--- a/core/modules/file/src/Plugin/Field/FieldFormatter/FileSize.php
+++ b/core/modules/file/src/Plugin/Field/FieldFormatter/FileSize.php
@@ -34,7 +34,7 @@ public static function isApplicable(FieldDefinitionInterface $field_definition)
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = [];
 
     foreach ($items as $delta => $item) {
diff --git a/core/modules/file/src/Plugin/Field/FieldFormatter/GenericFileFormatter.php b/core/modules/file/src/Plugin/Field/FieldFormatter/GenericFileFormatter.php
index f370037..e4e1e1f 100644
--- a/core/modules/file/src/Plugin/Field/FieldFormatter/GenericFileFormatter.php
+++ b/core/modules/file/src/Plugin/Field/FieldFormatter/GenericFileFormatter.php
@@ -25,10 +25,13 @@ class GenericFileFormatter extends FileFormatterBase {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = array();
+    if (empty($langcode)) {
+      $langcode = \Drupal::languageManager()->getCurrentLanguage(LanguageInterface::TYPE_CONTENT)->getId();
+    }
 
-    foreach ($this->getEntitiesToView($items) as $delta => $file) {
+    foreach ($this->getEntitiesToView($items, $langcode) as $delta => $file) {
       $item = $file->_referringItem;
       $elements[$delta] = array(
         '#theme' => 'file_link',
diff --git a/core/modules/file/src/Plugin/Field/FieldFormatter/RSSEnclosureFormatter.php b/core/modules/file/src/Plugin/Field/FieldFormatter/RSSEnclosureFormatter.php
index 2706e2f..7ef836c 100644
--- a/core/modules/file/src/Plugin/Field/FieldFormatter/RSSEnclosureFormatter.php
+++ b/core/modules/file/src/Plugin/Field/FieldFormatter/RSSEnclosureFormatter.php
@@ -25,11 +25,14 @@ class RSSEnclosureFormatter extends FileFormatterBase {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $entity = $items->getEntity();
+    if (empty($langcode)) {
+      $langcode = \Drupal::languageManager()->getCurrentLanguage(LanguageInterface::TYPE_CONTENT)->getId();
+    }
     // Add the first file as an enclosure to the RSS item. RSS allows only one
     // enclosure per item. See: http://en.wikipedia.org/wiki/RSS_enclosure
-    foreach ($this->getEntitiesToView($items) as $delta => $file) {
+    foreach ($this->getEntitiesToView($items, $langcode) as $delta => $file) {
       $entity->rss_elements[] = array(
         'key' => 'enclosure',
         'attributes' => array(
diff --git a/core/modules/file/src/Plugin/Field/FieldFormatter/TableFormatter.php b/core/modules/file/src/Plugin/Field/FieldFormatter/TableFormatter.php
index 9bf55ee..8f6f773 100644
--- a/core/modules/file/src/Plugin/Field/FieldFormatter/TableFormatter.php
+++ b/core/modules/file/src/Plugin/Field/FieldFormatter/TableFormatter.php
@@ -8,6 +8,7 @@
 namespace Drupal\file\Plugin\Field\FieldFormatter;
 
 use Drupal\Core\Field\FieldItemListInterface;
+use Drupal\Core\Language\LanguageInterface;
 
 /**
  * Plugin implementation of the 'file_table' formatter.
@@ -25,10 +26,13 @@ class TableFormatter extends FileFormatterBase {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = array();
+    if (empty($langcode)) {
+      $langcode = \Drupal::languageManager()->getCurrentLanguage(LanguageInterface::TYPE_CONTENT)->getId();
+    }
 
-    if ($files = $this->getEntitiesToView($items)) {
+    if ($files = $this->getEntitiesToView($items, $langcode)) {
       $header = array(t('Attachment'), t('Size'));
       $rows = array();
       foreach ($files as $delta => $file) {
diff --git a/core/modules/file/src/Plugin/Field/FieldFormatter/UrlPlainFormatter.php b/core/modules/file/src/Plugin/Field/FieldFormatter/UrlPlainFormatter.php
index f61a98d..c1dea6c 100644
--- a/core/modules/file/src/Plugin/Field/FieldFormatter/UrlPlainFormatter.php
+++ b/core/modules/file/src/Plugin/Field/FieldFormatter/UrlPlainFormatter.php
@@ -8,6 +8,7 @@
 namespace Drupal\file\Plugin\Field\FieldFormatter;
 
 use Drupal\Core\Field\FieldItemListInterface;
+use Drupal\Core\Language\LanguageInterface;
 
 /**
  * Plugin implementation of the 'file_url_plain' formatter.
@@ -25,10 +26,13 @@ class UrlPlainFormatter extends FileFormatterBase {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = array();
+    if (empty($langcode)) {
+      $langcode = \Drupal::languageManager()->getCurrentLanguage(LanguageInterface::TYPE_CONTENT)->getId();
+    }
 
-    foreach ($this->getEntitiesToView($items) as $delta => $file) {
+    foreach ($this->getEntitiesToView($items, $langcode) as $delta => $file) {
       $elements[$delta] = array(
         '#markup' => file_create_url($file->getFileUri()),
         '#cache' => array(
diff --git a/core/modules/image/src/Plugin/Field/FieldFormatter/ImageFormatter.php b/core/modules/image/src/Plugin/Field/FieldFormatter/ImageFormatter.php
index 8fbd888..169880b 100644
--- a/core/modules/image/src/Plugin/Field/FieldFormatter/ImageFormatter.php
+++ b/core/modules/image/src/Plugin/Field/FieldFormatter/ImageFormatter.php
@@ -188,7 +188,7 @@ public function settingsSummary() {
   public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = array();
     if (empty($langcode)) {
-      $langcode = $this->languageManager->getCurrentLanguage(LanguageInterface::TYPE_CONTENT)->getId();
+      $langcode = \Drupal::languageManager()->getCurrentLanguage(LanguageInterface::TYPE_CONTENT)->getId();
     }
     $files = $this->getEntitiesToView($items, $langcode);
 
diff --git a/core/modules/link/src/Plugin/Field/FieldFormatter/LinkFormatter.php b/core/modules/link/src/Plugin/Field/FieldFormatter/LinkFormatter.php
index eb3804a..d3f24f3 100644
--- a/core/modules/link/src/Plugin/Field/FieldFormatter/LinkFormatter.php
+++ b/core/modules/link/src/Plugin/Field/FieldFormatter/LinkFormatter.php
@@ -177,7 +177,7 @@ public function settingsSummary() {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $element = array();
     $entity = $items->getEntity();
     $settings = $this->getSettings();
diff --git a/core/modules/link/src/Plugin/Field/FieldFormatter/LinkSeparateFormatter.php b/core/modules/link/src/Plugin/Field/FieldFormatter/LinkSeparateFormatter.php
index 3ea2770..3d00338 100644
--- a/core/modules/link/src/Plugin/Field/FieldFormatter/LinkSeparateFormatter.php
+++ b/core/modules/link/src/Plugin/Field/FieldFormatter/LinkSeparateFormatter.php
@@ -42,7 +42,7 @@ public static function defaultSettings() {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $element = array();
     $entity = $items->getEntity();
     $settings = $this->getSettings();
diff --git a/core/modules/options/src/Plugin/Field/FieldFormatter/OptionsDefaultFormatter.php b/core/modules/options/src/Plugin/Field/FieldFormatter/OptionsDefaultFormatter.php
index 37220f5..2bba34c 100644
--- a/core/modules/options/src/Plugin/Field/FieldFormatter/OptionsDefaultFormatter.php
+++ b/core/modules/options/src/Plugin/Field/FieldFormatter/OptionsDefaultFormatter.php
@@ -32,7 +32,7 @@ class OptionsDefaultFormatter extends FormatterBase {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = array();
 
     // Only collect allowed options if there are actually items to display.
diff --git a/core/modules/options/src/Plugin/Field/FieldFormatter/OptionsKeyFormatter.php b/core/modules/options/src/Plugin/Field/FieldFormatter/OptionsKeyFormatter.php
index f6328a8..dabdefb 100644
--- a/core/modules/options/src/Plugin/Field/FieldFormatter/OptionsKeyFormatter.php
+++ b/core/modules/options/src/Plugin/Field/FieldFormatter/OptionsKeyFormatter.php
@@ -31,7 +31,7 @@ class OptionsKeyFormatter extends FormatterBase {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = array();
 
     foreach ($items as $delta => $item) {
diff --git a/core/modules/responsive_image/src/Plugin/Field/FieldFormatter/ResponsiveImageFormatter.php b/core/modules/responsive_image/src/Plugin/Field/FieldFormatter/ResponsiveImageFormatter.php
index 3620501..7e60117 100644
--- a/core/modules/responsive_image/src/Plugin/Field/FieldFormatter/ResponsiveImageFormatter.php
+++ b/core/modules/responsive_image/src/Plugin/Field/FieldFormatter/ResponsiveImageFormatter.php
@@ -164,7 +164,7 @@ public function settingsSummary() {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = array();
     $files = $this->getEntitiesToView($items);
 
diff --git a/core/modules/responsive_image/tests/modules/responsive_image_test_module/src/Plugin/Field/FieldFormatter/ResponsiveImageTestFormatter.php b/core/modules/responsive_image/tests/modules/responsive_image_test_module/src/Plugin/Field/FieldFormatter/ResponsiveImageTestFormatter.php
index eeb5b09..ef11c05 100644
--- a/core/modules/responsive_image/tests/modules/responsive_image_test_module/src/Plugin/Field/FieldFormatter/ResponsiveImageTestFormatter.php
+++ b/core/modules/responsive_image/tests/modules/responsive_image_test_module/src/Plugin/Field/FieldFormatter/ResponsiveImageTestFormatter.php
@@ -26,7 +26,7 @@ class ResponsiveImageTestFormatter extends ResponsiveImageFormatter {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = parent::viewElements($items);
     // Unset #item_attributes to test that the theme function can handle that.
     foreach ($elements as &$element) {
diff --git a/core/modules/taxonomy/src/Plugin/Field/FieldFormatter/EntityReferenceTaxonomyTermRssFormatter.php b/core/modules/taxonomy/src/Plugin/Field/FieldFormatter/EntityReferenceTaxonomyTermRssFormatter.php
index 0433066..36dd9a7 100644
--- a/core/modules/taxonomy/src/Plugin/Field/FieldFormatter/EntityReferenceTaxonomyTermRssFormatter.php
+++ b/core/modules/taxonomy/src/Plugin/Field/FieldFormatter/EntityReferenceTaxonomyTermRssFormatter.php
@@ -28,11 +28,14 @@ class EntityReferenceTaxonomyTermRssFormatter extends EntityReferenceFormatterBa
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $parent_entity = $items->getEntity();
     $elements = array();
+    if (empty($langcode)) {
+      $langcode = \Drupal::languageManager()->getCurrentLanguage(LanguageInterface::TYPE_CONTENT)->getId();
+    }
 
-    foreach ($this->getEntitiesToView($items) as $delta => $entity) {
+    foreach ($this->getEntitiesToView($items, $langcode) as $delta => $entity) {
       $parent_entity->rss_elements[] = array(
         'key' => 'category',
         'value' => $entity->label(),
diff --git a/core/modules/telephone/src/Plugin/Field/FieldFormatter/TelephoneLinkFormatter.php b/core/modules/telephone/src/Plugin/Field/FieldFormatter/TelephoneLinkFormatter.php
index c0b8337..dab07cd 100644
--- a/core/modules/telephone/src/Plugin/Field/FieldFormatter/TelephoneLinkFormatter.php
+++ b/core/modules/telephone/src/Plugin/Field/FieldFormatter/TelephoneLinkFormatter.php
@@ -67,7 +67,7 @@ public function settingsSummary() {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $element = array();
     $title_setting = $this->getSetting('title');
 
diff --git a/core/modules/text/src/Plugin/Field/FieldFormatter/TextTrimmedFormatter.php b/core/modules/text/src/Plugin/Field/FieldFormatter/TextTrimmedFormatter.php
index 09404d6..302ce55 100644
--- a/core/modules/text/src/Plugin/Field/FieldFormatter/TextTrimmedFormatter.php
+++ b/core/modules/text/src/Plugin/Field/FieldFormatter/TextTrimmedFormatter.php
@@ -70,7 +70,7 @@ public function settingsSummary() {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = array();
 
     $render_as_summary = function (&$element) {
diff --git a/core/modules/user/src/Plugin/Field/FieldFormatter/AuthorFormatter.php b/core/modules/user/src/Plugin/Field/FieldFormatter/AuthorFormatter.php
index 768df62..122e03d 100644
--- a/core/modules/user/src/Plugin/Field/FieldFormatter/AuthorFormatter.php
+++ b/core/modules/user/src/Plugin/Field/FieldFormatter/AuthorFormatter.php
@@ -12,6 +12,7 @@
 use Drupal\Core\Field\FieldDefinitionInterface;
 use Drupal\Core\Field\FieldItemListInterface;
 use Drupal\Core\Field\Plugin\Field\FieldFormatter\EntityReferenceFormatterBase;
+use Drupal\Core\Language\LanguageInterface;
 
 /**
  * Plugin implementation of the 'author' formatter.
@@ -32,6 +33,9 @@ class AuthorFormatter extends EntityReferenceFormatterBase {
    */
   public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = array();
+    if (empty($langcode)) {
+      $langcode = \Drupal::languageManager()->getCurrentLanguage(LanguageInterface::TYPE_CONTENT)->getId();
+    }
 
     foreach ($this->getEntitiesToView($items, $langcode) as $delta => $entity) {
       /** @var $referenced_user \Drupal\user\UserInterface */
diff --git a/core/modules/user/src/Plugin/Field/FieldFormatter/UserNameFormatter.php b/core/modules/user/src/Plugin/Field/FieldFormatter/UserNameFormatter.php
index cf99225..083da3c 100644
--- a/core/modules/user/src/Plugin/Field/FieldFormatter/UserNameFormatter.php
+++ b/core/modules/user/src/Plugin/Field/FieldFormatter/UserNameFormatter.php
@@ -54,7 +54,7 @@ public function settingsForm(array $form, FormStateInterface $form_state) {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = [];
 
     foreach ($items as $delta => $item) {
diff --git a/core/modules/views/tests/modules/views_test_formatter/src/Plugin/Field/FieldFormatter/AttachmentTestFormatter.php b/core/modules/views/tests/modules/views_test_formatter/src/Plugin/Field/FieldFormatter/AttachmentTestFormatter.php
index 002105e..e96f6b3 100644
--- a/core/modules/views/tests/modules/views_test_formatter/src/Plugin/Field/FieldFormatter/AttachmentTestFormatter.php
+++ b/core/modules/views/tests/modules/views_test_formatter/src/Plugin/Field/FieldFormatter/AttachmentTestFormatter.php
@@ -28,7 +28,7 @@ class AttachmentTestFormatter extends NumericUnformattedFormatter {
   /**
    * {@inheritdoc}
    */
-  public function viewElements(FieldItemListInterface $items) {
+  public function viewElements(FieldItemListInterface $items, $langcode = NULL) {
     $elements = parent::viewElements($items);
 
     // Add dummy attachments.