accessibility: add button action descriptions

Author: superus8r

app/src/main/res/menu/activity_main_menu.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <menu xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto">
-    <item android:id="@+id/actionSettings" android:title="@string/title_settings" app:showAsAction="ifRoom" android:icon="@drawable/ic_baseline_settings_24"/>
-    <item android:id="@+id/actionConnect" android:title="@string/title_connect" app:showAsAction="ifRoom" android:icon="@drawable/ic_usb_white_24dp"/>
-    <item android:id="@+id/actionDisconnect" android:title="@string/title_disconnect" app:showAsAction="ifRoom" android:icon="@drawable/ic_usb_off_white_24dp"/>
+    <item android:id="@+id/actionSettings" android:title="@string/title_settings" android:contentDescription="@string/title_settings" app:showAsAction="ifRoom" android:icon="@drawable/ic_baseline_settings_24"/>
+    <item android:id="@+id/actionConnect" android:title="@string/title_connect" android:contentDescription="@string/title_connect" app:showAsAction="ifRoom" android:icon="@drawable/ic_usb_white_24dp"/>
+    <item android:id="@+id/actionDisconnect" android:title="@string/title_disconnect" android:contentDescription="@string/title_disconnect" app:showAsAction="ifRoom" android:icon="@drawable/ic_usb_off_white_24dp"/>
 </menu>