Fixed a bug where the content height was wrong

when dragging down from a HUN the content height was
wrong.

Change-Id: Ic30e4de67625ed88942c71e68e6009b832d064ed
Fixes: 28563238

packages/SystemUI/src/com/android/systemui/statusbar/ExpandableNotificationRow.java

@@ -455,7 +455,11 @@ public class ExpandableNotificationRow extends ActivatableNotificationView {
      * @param pinned whether it is pinned
      */
     public void setPinned(boolean pinned) {
+        int intrinsicHeight = getIntrinsicHeight();
         mIsPinned = pinned;
+        if (intrinsicHeight != getIntrinsicHeight()) {
+            notifyHeightChanged(false);
+        }
         if (pinned) {
             setIconAnimationRunning(true);
             mExpandedWhenPinned = false;

packages/SystemUI/src/com/android/systemui/statusbar/phone/HeadsUpTouchHelper.java

@@ -103,10 +103,12 @@ public class HeadsUpTouchHelper implements Gefingerpoken {
                     mInitialTouchX = x;
                     mInitialTouchY = y;
                     int expandedHeight = mPickedChild.getActualHeight();
-                    mHeadsUpManager.unpinAll();
                     mPanel.setPanelScrimMinFraction((float) expandedHeight
                             / mPanel.getMaxPanelHeight());
                     mPanel.startExpandMotion(x, y, true /* startTracking */, expandedHeight);
+                    // This call needs to be after the expansion start otherwise we will get a
+                    // flicker of one frame as it's not expanded yet.
+                    mHeadsUpManager.unpinAll();
                     mPanel.clearNotificationEffects();
                     return true;
                 }

packages/SystemUI/src/com/android/systemui/statusbar/phone/PanelView.java

@@ -362,6 +362,7 @@ public abstract class PanelView extends FrameLayout {
         mInitialTouchX = newX;
         if (startTracking) {
             mTouchSlopExceeded = true;
+            setExpandedHeight(mInitialOffsetOnTouch);
             onTrackingStarted();
         }
     }