1 files changed, 24 insertions, 0 deletions
diff --git a/core/java/android/widget/AutoCompleteTextView.java b/core/java/android/widget/AutoCompleteTextView.java
index e84e5b0..bfa0eff 100644
--- a/core/java/android/widget/AutoCompleteTextView.java
+++ b/core/java/android/widget/AutoCompleteTextView.java
@@ -124,6 +124,7 @@ public class AutoCompleteTextView extends EditText implements Filter.FilterListe
     private boolean mBlockCompletion;
 
     private AutoCompleteTextView.ListSelectorHider mHideSelector;
+    private Runnable mShowDropDownRunnable;
 
     private AutoCompleteTextView.PassThroughClickListener mPassThroughClickListener;
 
@@ -1080,6 +1081,13 @@ public class AutoCompleteTextView extends EditText implements Filter.FilterListe
     }
 
     /**
+     * Issues a runnable to show the dropdown as soon as possible.
+     */
+    public void showDropDownAfterLayout() {
+        post(mShowDropDownRunnable);
+    }
+
+    /**
      * <p>Displays the drop down on screen.</p>
      */
     public void showDropDown() {
@@ -1190,6 +1198,22 @@ public class AutoCompleteTextView extends EditText implements Filter.FilterListe
 
             mHideSelector = new ListSelectorHider();
 
+            /**
+             * This Runnable exists for the sole purpose of checking if the view layout has got
+             * completed and if so call showDropDown to display the drop down. This is used to show
+             * the drop down as soon as possible after user opens up the search dialog, without
+             * waiting for the normal UI pipeline to do it's job which is slower than this method.
+             */
+            mShowDropDownRunnable = new Runnable() {
+                public void run() {
+                    // View layout should be all done before displaying the drop down.
+                    View view = getDropDownAnchorView();
+                    if (view != null && view.getWindowToken() != null) {
+                        showDropDown();
+                    }
+                }
+            };
+
             mDropDownList = new DropDownListView(context);
             mDropDownList.setSelector(mDropDownListHighlight);
             mDropDownList.setAdapter(mAdapter);