talkback: "thumbnail" isn't spoken anymore

src/main/res/layout/grid_image.xml

@@ -35,7 +35,8 @@
             android:layout_height="match_parent"
             android:padding="@dimen/standard_eigth_padding"
             android:scaleType="centerCrop"
-            android:src="@drawable/folder" />
+            android:src="@drawable/folder"
+            android:contentDescription="@null"/>
 
 
         <ImageView

src/main/res/layout/grid_item.xml

@@ -35,7 +35,7 @@
             android:layout_height="@dimen/standard_list_item_size"
             android:layout_gravity="center"
             android:src="@drawable/folder"
-            android:contentDescription="@string/thumbnail"/>
+            android:contentDescription="@null"/>
 
         <ImageView
             android:id="@+id/favorite_action"

src/main/res/layout/list_item.xml

@@ -49,7 +49,7 @@
                 android:layout_centerInParent="true"
                 android:layout_marginLeft="@dimen/standard_half_margin"
                 android:layout_marginStart="@dimen/standard_half_margin"
-                android:contentDescription="@string/thumbnail"
+                android:contentDescription="@null"
                 android:src="@drawable/folder" />
 
             <ImageView

src/main/res/layout/trashbin_item.xml

@@ -38,7 +38,7 @@
             android:layout_gravity="center_vertical"
             android:layout_marginLeft="@dimen/standard_margin"
             android:layout_marginRight="@dimen/standard_margin"
-            android:contentDescription="@string/thumbnail"
+            android:contentDescription="@null"
             android:src="@drawable/folder"/>
 
         <LinearLayout

src/main/res/layout/upload_list_item.xml

@@ -40,7 +40,7 @@
             android:layout_width="@dimen/file_icon_size"
             android:layout_height="@dimen/file_icon_size"
             android:layout_gravity="center"
-            android:contentDescription="@string/thumbnail"
+            android:contentDescription="@null"
             android:src="@drawable/folder" />
 
     </FrameLayout>

src/main/res/layout/uploader_list_item_layout.xml

@@ -30,7 +30,7 @@
         android:layout_gravity="center_vertical"
         android:layout_margin="@dimen/uploader_list_item_layout_image_margin"
         android:src="@drawable/folder"
-        android:contentDescription="@string/thumbnail"/>
+        android:contentDescription="@null"/>
 
     <LinearLayout
         android:layout_width="0dp"

src/main/res/layout/version_list_item.xml

@@ -38,7 +38,7 @@
         android:layout_marginEnd="@dimen/activity_icon_layout_right_end_margin"
         android:layout_marginRight="@dimen/activity_icon_layout_right_end_margin"
         android:alpha="0.5"
-        android:contentDescription="@string/thumbnail"
+        android:contentDescription="@null"
         android:src="@drawable/ic_activity"/>
 
     <LinearLayout