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Commit f9d7eedc authored by Alan Viverette's avatar Alan Viverette
Browse files

Expose View.OnScrollChangeListener interface 

Allows clients to observe changes to scrollX / scrollY.

Bug: 19098033
Change-Id: I070e61a9532fe1f6cb5437eab94f7fffc1b17e97
parent 767cddd3

api/current.txt

+5 −0
Original line number Diff line number Diff line
@@ -33986,6 +33986,7 @@ package android.view { 
    method public void setOnHoverListener(android.view.View.OnHoverListener);

    method public void setOnKeyListener(android.view.View.OnKeyListener);

    method public void setOnLongClickListener(android.view.View.OnLongClickListener);

    method public void setOnScrollChangeListener(android.view.View.OnScrollChangeListener);

    method public void setOnSystemUiVisibilityChangeListener(android.view.View.OnSystemUiVisibilityChangeListener);

    method public void setOnTouchListener(android.view.View.OnTouchListener);

    method public void setOutlineProvider(android.view.ViewOutlineProvider);
@@ -34253,6 +34254,10 @@ package android.view { 
    method public abstract boolean onLongClick(android.view.View);

  }













  public static abstract interface View.OnScrollChangeListener {













    method public abstract void onScrollChange(android.view.View, int, int, int, int);













  }



























  public static abstract interface View.OnSystemUiVisibilityChangeListener {















    method public abstract void onSystemUiVisibilityChange(int);















  }

























core/java/android/view/View.java



+19
−6




























Original line number
Diff line number
Diff line








@@ -4567,11 +4567,18 @@ public class View implements Drawable.Callback, KeyEvent.Callback,













    }





























    /**













     * Register a callback to be invoked when the scroll position of this view













     * changed.













     * Register a callback to be invoked when the scroll X or Y positions of













     * this view change.













     * <p>













     * <b>Note:</b> Some views handle scrolling independently from View and may













     * have their own separate listeners for scroll-type events. For example,













     * {@link android.widget.ListView ListView} allows clients to register an













     * {@link android.widget.ListView#setOnScrollListener(android.widget.AbsListView.OnScrollListener) AbsListView.OnScrollListener}













     * to listen for changes in list scroll position.















     *













     * @param l The callback that will run.













     * @hide Only used internally.













     * @param l The listener to notify when the scroll X or Y position changes.













     * @see android.view.View#getScrollX()













     * @see android.view.View#getScrollY()















     */















    public void setOnScrollChangeListener(OnScrollChangeListener l) {















        getListenerInfo().mOnScrollChangeListener = l;










@@ -9957,9 +9964,15 @@ public class View implements Drawable.Callback, KeyEvent.Callback,



























    /**















     * Interface definition for a callback to be invoked when the scroll













     * position of a view changes.













     * X or Y positions of a view change.













     * <p>













     * <b>Note:</b> Some views handle scrolling independently from View and may













     * have their own separate listeners for scroll-type events. For example,













     * {@link android.widget.ListView ListView} allows clients to register an













     * {@link android.widget.ListView#setOnScrollListener(android.widget.AbsListView.OnScrollListener) AbsListView.OnScrollListener}













     * to listen for changes in list scroll position.















     *













     * @hide Only used internally.













     * @see #setOnScrollChangeListener(View.OnScrollChangeListener)















     */















    public interface OnScrollChangeListener {















        /**