diff --git a/packages/DocumentsUI/res/layout/fragment_save.xml b/packages/DocumentsUI/res/layout/fragment_save.xml
index 891f0a0..d601194 100644
--- a/packages/DocumentsUI/res/layout/fragment_save.xml
+++ b/packages/DocumentsUI/res/layout/fragment_save.xml
@@ -51,15 +51,31 @@
             android:singleLine="true"
             android:selectAllOnFocus="true" />
 
-        <Button
-            android:id="@android:id/button1"
+        <FrameLayout
             android:layout_width="wrap_content"
-            android:layout_height="match_parent"
-            android:background="?android:attr/selectableItemBackground"
-            android:text="@string/menu_save"
-            android:textAllCaps="true"
-            android:textAppearance="?android:attr/textAppearanceSmall"
-            android:padding="8dp" />
+            android:layout_height="match_parent">
+
+            <Button
+                android:id="@android:id/button1"
+                android:layout_width="wrap_content"
+                android:layout_height="match_parent"
+                android:background="?android:attr/selectableItemBackground"
+                android:text="@string/menu_save"
+                android:textAllCaps="true"
+                android:textAppearance="?android:attr/textAppearanceSmall"
+                android:padding="8dp" />
+
+            <ProgressBar
+                android:id="@android:id/progress"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center"
+                android:visibility="gone"
+                android:indeterminate="true"
+                android:padding="8dp"
+                style="?android:attr/progressBarStyle" />
+
+        </FrameLayout>
 
     </LinearLayout>
 
diff --git a/packages/DocumentsUI/src/com/android/documentsui/CreateDirectoryFragment.java b/packages/DocumentsUI/src/com/android/documentsui/CreateDirectoryFragment.java
index 90be197..ba8c35f 100644
--- a/packages/DocumentsUI/src/com/android/documentsui/CreateDirectoryFragment.java
+++ b/packages/DocumentsUI/src/com/android/documentsui/CreateDirectoryFragment.java
@@ -95,6 +95,11 @@
         }
 
         @Override
+        protected void onPreExecute() {
+            mActivity.setPending(true);
+        }
+
+        @Override
         protected DocumentInfo doInBackground(Void... params) {
             final ContentResolver resolver = mActivity.getContentResolver();
             ContentProviderClient client = null;
@@ -120,6 +125,8 @@
             } else {
                 Toast.makeText(mActivity, R.string.create_error, Toast.LENGTH_SHORT).show();
             }
+
+            mActivity.setPending(false);
         }
     }
 }
diff --git a/packages/DocumentsUI/src/com/android/documentsui/DocumentsActivity.java b/packages/DocumentsUI/src/com/android/documentsui/DocumentsActivity.java
index d675e8d..a9278d7 100644
--- a/packages/DocumentsUI/src/com/android/documentsui/DocumentsActivity.java
+++ b/packages/DocumentsUI/src/com/android/documentsui/DocumentsActivity.java
@@ -661,6 +661,13 @@
         DirectoryFragment.get(getFragmentManager()).onUserModeChanged();
     }
 
+    public void setPending(boolean pending) {
+        final SaveFragment save = SaveFragment.get(getFragmentManager());
+        if (save != null) {
+            save.setPending(pending);
+        }
+    }
+
     @Override
     public void onBackPressed() {
         if (!mState.stackTouched) {
@@ -1051,6 +1058,11 @@
         }
 
         @Override
+        protected void onPreExecute() {
+            setPending(true);
+        }
+
+        @Override
         protected Uri doInBackground(Void... params) {
             final ContentResolver resolver = getContentResolver();
             final DocumentInfo cwd = getCurrentDirectory();
@@ -1083,6 +1095,8 @@
                 Toast.makeText(DocumentsActivity.this, R.string.save_error, Toast.LENGTH_SHORT)
                         .show();
             }
+
+            setPending(false);
         }
     }
 
diff --git a/packages/DocumentsUI/src/com/android/documentsui/SaveFragment.java b/packages/DocumentsUI/src/com/android/documentsui/SaveFragment.java
index 23e047c..9d70c51 100644
--- a/packages/DocumentsUI/src/com/android/documentsui/SaveFragment.java
+++ b/packages/DocumentsUI/src/com/android/documentsui/SaveFragment.java
@@ -30,6 +30,7 @@
 import android.widget.Button;
 import android.widget.EditText;
 import android.widget.ImageView;
+import android.widget.ProgressBar;
 
 import com.android.documentsui.model.DocumentInfo;
 
@@ -42,6 +43,7 @@
     private DocumentInfo mReplaceTarget;
     private EditText mDisplayName;
     private Button mSave;
+    private ProgressBar mProgress;
     private boolean mIgnoreNextEdit;
 
     private static final String EXTRA_MIME_TYPE = "mime_type";
@@ -83,6 +85,8 @@
         mSave.setOnClickListener(mSaveListener);
         mSave.setEnabled(false);
 
+        mProgress = (ProgressBar) view.findViewById(android.R.id.progress);
+
         return view;
     }
 
@@ -92,7 +96,6 @@
             if (mIgnoreNextEdit) {
                 mIgnoreNextEdit = false;
             } else {
-                Log.d(TAG, "onTextChanged!");
                 mReplaceTarget = null;
             }
         }
@@ -140,4 +143,9 @@
     public void setSaveEnabled(boolean enabled) {
         mSave.setEnabled(enabled);
     }
+
+    public void setPending(boolean pending) {
+        mSave.setVisibility(pending ? View.INVISIBLE : View.VISIBLE);
+        mProgress.setVisibility(pending ? View.VISIBLE : View.GONE);
+    }
 }
diff --git a/packages/ExternalStorageProvider/src/com/android/externalstorage/TestDocumentsProvider.java b/packages/ExternalStorageProvider/src/com/android/externalstorage/TestDocumentsProvider.java
index 71ce4dd..af6ff01 100644
--- a/packages/ExternalStorageProvider/src/com/android/externalstorage/TestDocumentsProvider.java
+++ b/packages/ExternalStorageProvider/src/com/android/externalstorage/TestDocumentsProvider.java
@@ -127,7 +127,7 @@
         final MatrixCursor result = new MatrixCursor(resolveRootProjection(projection));
         final RowBuilder row = result.newRow();
         row.add(Root.COLUMN_ROOT_ID, MY_ROOT_ID);
-        row.add(Root.COLUMN_FLAGS, Root.FLAG_SUPPORTS_RECENTS);
+        row.add(Root.COLUMN_FLAGS, Root.FLAG_SUPPORTS_RECENTS | Root.FLAG_SUPPORTS_CREATE);
         row.add(Root.COLUMN_TITLE, "_Test title which is really long");
         row.add(Root.COLUMN_SUMMARY,
                 SystemClock.elapsedRealtime() + " summary which is also super long text");
@@ -147,6 +147,14 @@
         return result;
     }
 
+    @Override
+    public String createDocument(String parentDocumentId, String mimeType, String displayName)
+            throws FileNotFoundException {
+        if (LAG) lagUntilCanceled(null);
+
+        return super.createDocument(parentDocumentId, mimeType, displayName);
+    }
+
     /**
      * Holds any outstanding or finished "network" fetching.
      */
@@ -386,6 +394,7 @@
 
         if (MY_DOC_ID.equals(docId)) {
             row.add(Document.COLUMN_MIME_TYPE, Document.MIME_TYPE_DIR);
+            row.add(Document.COLUMN_FLAGS, Document.FLAG_DIR_SUPPORTS_CREATE);
         } else if (MY_DOC_NULL.equals(docId)) {
             // No MIME type
         } else {