Check if digits container is null or not.

It can be null on some layout (right now landscape layout may not
have it).

Bug: 5202030
Change-Id: I12f6fa65d2566a175f3f5e6f1b4cd9ca9321cbc9
diff --git a/src/com/android/contacts/dialpad/DialpadFragment.java b/src/com/android/contacts/dialpad/DialpadFragment.java
index eef5a61..e3e8875 100644
--- a/src/com/android/contacts/dialpad/DialpadFragment.java
+++ b/src/com/android/contacts/dialpad/DialpadFragment.java
@@ -96,6 +96,10 @@
         public void onSearchButtonPressed();
     }
 
+    /**
+     * View (usually FrameLayout) containing mDigits field. This can be null, in which mDigits
+     * isn't enclosed by the container.
+     */
     private View mDigitsContainer;
     private EditText mDigits;
 
@@ -931,7 +935,12 @@
 
         if (enabled) {
             // Log.i(TAG, "Showing dialpad chooser!");
-            mDigitsContainer.setVisibility(View.GONE);
+            if (mDigitsContainer != null) {
+                mDigitsContainer.setVisibility(View.GONE);
+            } else {
+                // mDigits is not enclosed by the container. Make the digits field itself gone.
+                mDigits.setVisibility(View.GONE);
+            }
             if (mDialpad != null) mDialpad.setVisibility(View.GONE);
             mAdditionalButtonsRow.setVisibility(View.GONE);
             mDialpadChooser.setVisibility(View.VISIBLE);
@@ -944,7 +953,11 @@
             mDialpadChooser.setAdapter(mDialpadChooserAdapter);
         } else {
             // Log.i(TAG, "Displaying normal Dialer UI.");
-            mDigitsContainer.setVisibility(View.VISIBLE);
+            if (mDigitsContainer != null) {
+                mDigitsContainer.setVisibility(View.VISIBLE);
+            } else {
+                mDigits.setVisibility(View.VISIBLE);
+            }
             if (mDialpad != null) mDialpad.setVisibility(View.VISIBLE);
             mAdditionalButtonsRow.setVisibility(View.VISIBLE);
             mDialpadChooser.setVisibility(View.GONE);