Accessible content labels for attachment icons

Fixes #5908
Closes #5917
// FREEBIE

res/layout/attachment_type_selector.xml

@@ -34,6 +34,7 @@
                     android:src="@drawable/ic_image_white_36dp"
                     android:scaleType="center"
                     android:elevation="4dp"
+                    android:contentDescription="@string/attachment_type_selector__image_description"
                     app:circleColor="@color/purple_400"/>
 
             <TextView android:layout_marginTop="10dp"
@@ -57,6 +58,7 @@
                     android:src="@drawable/ic_headset_white_36dp"
                     android:scaleType="center"
                     android:elevation="4dp"
+                    android:contentDescription="@string/attachment_type_selector__audio_description"
                     app:circleColor="@color/orange_400"/>
 
             <TextView android:layout_marginTop="10dp"
@@ -80,7 +82,7 @@
                     android:src="@drawable/ic_local_movies_white_36dp"
                     android:scaleType="center"
                     android:elevation="4dp"
-
+                    android:contentDescription="@string/attachment_type_selector__video_description"
                     app:circleColor="@color/red_400"/>
 
             <TextView android:layout_marginTop="10dp"
@@ -104,6 +106,7 @@
                     android:src="@drawable/ic_person_white_36dp"
                     android:scaleType="center"
                     android:elevation="4dp"
+                    android:contentDescription="@string/attachment_type_selector__contact_description"
                     app:circleColor="@color/blue_400"/>
 
             <TextView android:layout_marginTop="10dp"
@@ -138,6 +141,7 @@
                     android:src="@drawable/ic_camera_white_36dp"
                     android:scaleType="center"
                     android:elevation="4dp"
+                    android:contentDescription="@string/attachment_type_selector__camera_description"
                     app:circleColor="@color/green_400"/>
 
             <TextView android:layout_marginTop="10dp"
@@ -163,6 +167,7 @@
                     android:src="@drawable/ic_location_on_white_36dp"
                     android:scaleType="center"
                     android:elevation="4dp"
+                    android:contentDescription="@string/attachment_type_selector__location_description"
                     app:circleColor="@color/blue_grey_400"/>
 
             <TextView android:layout_marginTop="10dp"
@@ -187,13 +192,14 @@
                     android:src="@drawable/ic_gif_white_36dp"
                     android:scaleType="center"
                     android:elevation="4dp"
+                    android:contentDescription="@string/attachment_type_selector__gif_description"
                     app:circleColor="@color/cyan_400"/>
 
             <TextView android:layout_marginTop="10dp"
                       android:layout_width="wrap_content"
                       android:layout_height="wrap_content"
                       style="@style/AttachmentTypeLabel"
-                      android:text="GIF"/>
+                      android:text="@string/attachment_type_selector__gif"/>
 
         </LinearLayout>
 
@@ -210,6 +216,7 @@
                     android:src="@drawable/ic_keyboard_arrow_down_white_36dp"
                     android:scaleType="center"
                     android:elevation="4dp"
+                    android:contentDescription="@string/attachment_type_selector__drawer_description"
                     app:circleColor="@color/gray50"/>
 
             <TextView android:layout_marginTop="10dp"

res/values/strings.xml

@@ -632,11 +632,20 @@
 
     <!-- attachment_type_selector -->
     <string name="attachment_type_selector__image">Image</string>
+    <string name="attachment_type_selector__image_description">Image</string>
     <string name="attachment_type_selector__audio">Audio</string>
+    <string name="attachment_type_selector__audio_description">Audio</string>
     <string name="attachment_type_selector__video">Video</string>
+    <string name="attachment_type_selector__video_description">Video</string>
     <string name="attachment_type_selector__contact">Contact</string>
+    <string name="attachment_type_selector__contact_description">Contact</string>
     <string name="attachment_type_selector__camera">Camera</string>
+    <string name="attachment_type_selector__camera_description">Camera</string>
     <string name="attachment_type_selector__location">Location</string>
+    <string name="attachment_type_selector__location_description">Location</string>
+    <string name="attachment_type_selector__gif">GIF</string>
+    <string name="attachment_type_selector__gif_description">Gif</string>
+    <string name="attachment_type_selector__drawer_description">Toggle attachment drawer</string>
 
     <!-- change_passphrase_activity -->
     <string name="change_passphrase_activity__old_passphrase">Old passphrase</string>