Fix build in ub-launcher3-master

-> Stop depending on new RecyclerView methods

Change-Id: Ib2c58b24e2b796e6e7b3cd5e4bb927dc3f11faf2

src/com/android/launcher3/AppsContainerRecyclerView.java

@@ -30,6 +30,8 @@ import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewConfiguration;
 
+import com.android.launcher3.util.Thunk;
+
 import java.util.List;
 
 /**
@@ -40,10 +42,10 @@ public class AppsContainerRecyclerView extends RecyclerView
         implements RecyclerView.OnItemTouchListener {
 
     private static final float FAST_SCROLL_OVERLAY_Y_OFFSET_FACTOR = 1.5f;
-    private static final int SCROLL_DELTA_THRESHOLD = 6;
+    private static final int SCROLL_DELTA_THRESHOLD = 4;
 
     /** Keeps the last known scrolling delta/velocity along y-axis. */
-    private int mDy = 0;
+    @Thunk int mDy = 0;
     private float mDeltaThreshold;
 
     private AlphabeticalAppsList mApps;
@@ -98,6 +100,19 @@ public class AppsContainerRecyclerView extends RecyclerView
                 res.getDimensionPixelSize(R.dimen.apps_view_fast_scroll_scrubber_touch_inset);
         setFastScrollerAlpha(getFastScrollerAlpha());
         mDeltaThreshold = getResources().getDisplayMetrics().density * SCROLL_DELTA_THRESHOLD;
+
+        ScrollListener listener = new ScrollListener();
+        addOnScrollListener(listener);
+    }
+
+    private class ScrollListener extends RecyclerView.OnScrollListener {
+        public ScrollListener() {
+        }
+
+        @Override
+        public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
+            mDy = dy;
+        }
     }
 
     /**
@@ -149,11 +164,6 @@ public class AppsContainerRecyclerView extends RecyclerView
         drawFastScrollerPopup(canvas);
     }
 
-    @Override
-    public void onScrolled(int dx, int dy) {
-        mDy = dy;
-    }
-
     /**
      * We intercept the touch handling only to support fast scrolling when initiated from the
      * scroll bar.  Otherwise, we fall back to the default RecyclerView touch handling.

src/com/android/launcher3/widget/WidgetsContainerRecyclerView.java

@@ -21,6 +21,8 @@ import android.support.v7.widget.RecyclerView;
 import android.util.AttributeSet;
 import android.view.MotionEvent;
 
+import com.android.launcher3.util.Thunk;
+
 /**
  * The widgets recycler view container.
  * <p>
@@ -30,10 +32,10 @@ import android.view.MotionEvent;
 public class WidgetsContainerRecyclerView extends RecyclerView
         implements RecyclerView.OnItemTouchListener {
 
-    private static final int SCROLL_DELTA_THRESHOLD = 6;
+    private static final int SCROLL_DELTA_THRESHOLD = 4;
 
     /** Keeps the last known scrolling delta/velocity along y-axis. */
-    private int mDy = 0;
+    @Thunk int mDy = 0;
     private float mDeltaThreshold;
 
     public WidgetsContainerRecyclerView(Context context) {
@@ -47,6 +49,19 @@ public class WidgetsContainerRecyclerView extends RecyclerView
     public WidgetsContainerRecyclerView(Context context, AttributeSet attrs, int defStyleAttr) {
         super(context, attrs, defStyleAttr);
         mDeltaThreshold = getResources().getDisplayMetrics().density * SCROLL_DELTA_THRESHOLD;
+
+        ScrollListener listener = new ScrollListener();
+        addOnScrollListener(listener);
+    }
+
+    private class ScrollListener extends RecyclerView.OnScrollListener {
+        public ScrollListener() {
+        }
+
+        @Override
+        public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
+            mDy = dy;
+        }
     }
 
     @Override
@@ -55,11 +70,6 @@ public class WidgetsContainerRecyclerView extends RecyclerView
         addOnItemTouchListener(this);
     }
 
-    @Override
-    public void onScrolled(int dx, int dy) {
-        mDy = dy;
-    }
-
     @Override
     public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent ev) {
         if (ev.getAction() == MotionEvent.ACTION_DOWN) {