Manage mode for ExternalStorageProvider is supported R onwards only am: 0c63b5cb5f

Change-Id: I281b09c164f89138221a1275142970497c22c32e
diff --git a/src/com/android/documentsui/files/Config.java b/src/com/android/documentsui/files/Config.java
index 1b06703..7537aac 100644
--- a/src/com/android/documentsui/files/Config.java
+++ b/src/com/android/documentsui/files/Config.java
@@ -19,6 +19,7 @@
 import com.android.documentsui.ActivityConfig;
 import com.android.documentsui.base.DocumentStack;
 import com.android.documentsui.base.RootInfo;
+import com.android.documentsui.util.VersionUtils;
 
 /**
  * Provides support for Files activity specific specializations.
@@ -32,7 +33,7 @@
 
         // When in Files activity, allow External Storage provider to view
         // Android/[data|obb|sandbox] directories which are otherwise hidden for privacy reasons.
-        if (root != null && root.isExternalStorage()) {
+        if (VersionUtils.isAtLeastR() && root != null && root.isExternalStorage()) {
             return true;
         }
         // When in downloads top level directory, we also show active downloads.