Fix anchor overlap handling in ListPopupWindow

Do not change anchor overlap on the underlying
PopupWindow unless ListPopupWindow.setOverlapAnchor
has been called explicitly.

Bug: 36714649
Test: ApiDemos > Views > Spinner
Change-Id: I5e66d4409a1f04cdc0fbe64e255609836c2b0e95

1 files changed, 5 insertions, 1 deletions

diff --git a/core/java/android/widget/ListPopupWindow.java b/core/java/android/widget/ListPopupWindow.java
index ab4cce479005..2e8faeec6f13 100644
--- a/core/java/android/widget/ListPopupWindow.java
+++ b/core/java/android/widget/ListPopupWindow.java
@@ -76,6 +76,7 @@ public class ListPopupWindow implements ShowableListMenu {
     private boolean mDropDownVerticalOffsetSet;
     private boolean mIsAnimatedFromAnchor = true;
     private boolean mOverlapAnchor;
+    private boolean mOverlapAnchorSet;
 
     private int mDropDownGravity = Gravity.NO_GRAVITY;
 
@@ -681,7 +682,9 @@ public class ListPopupWindow implements ShowableListMenu {
             mPopup.setOutsideTouchable(!mForceIgnoreOutsideTouch && !mDropDownAlwaysVisible);
             mPopup.setTouchInterceptor(mTouchInterceptor);
             mPopup.setEpicenterBounds(mEpicenterBounds);
-            mPopup.setOverlapAnchor(mOverlapAnchor);
+            if (mOverlapAnchorSet) {
+                mPopup.setOverlapAnchor(mOverlapAnchor);
+            }
             mPopup.showAsDropDown(getAnchorView(), mDropDownHorizontalOffset,
                     mDropDownVerticalOffset, mDropDownGravity);
             mDropDownList.setSelection(ListView.INVALID_POSITION);
@@ -1259,6 +1262,7 @@ public class ListPopupWindow implements ShowableListMenu {
      * @hide
      */
     public void setOverlapAnchor(boolean overlap) {
+        mOverlapAnchorSet = true;
         mOverlapAnchor = overlap;
     }