handle touch events directly in AbsRecyclerViewFastScroller

recyclerviewfastscroller/src/main/java/xyz/danoz/recyclerviewfastscroller/AbsRecyclerViewFastScroller.java

@@ -79,8 +79,6 @@ public AbsRecyclerViewFastScroller(Context context, AttributeSet attrs, int defS
         } finally {
             attributes.recycle();
         }
-
-        setOnTouchListener(new FastScrollerTouchListener(this));
     }
 
     private void applyCustomAttributesToView(View view, Drawable drawable, int color) {
@@ -91,6 +89,31 @@ private void applyCustomAttributesToView(View view, Drawable drawable, int color
         }
     }
 
+    @Override
+    public boolean onTouchEvent(MotionEvent event) {
+        SectionIndicator sectionIndicator = this.getSectionIndicator();
+        showOrHideIndicator(sectionIndicator, event);
+
+        float scrollProgress = this.getScrollProgress(event);
+        this.scrollTo(scrollProgress, true);
+        this.moveHandleToPosition(scrollProgress);
+        return true;
+    }
+
+    private void showOrHideIndicator(@Nullable SectionIndicator sectionIndicator, MotionEvent event) {
+        if (sectionIndicator == null) {
+            return;
+        }
+
+        switch (event.getActionMasked()) {
+            case MotionEvent.ACTION_DOWN:
+                sectionIndicator.animateAlpha(1f);
+                return;
+            case MotionEvent.ACTION_UP:
+                sectionIndicator.animateAlpha(0f);
+        }
+    }
+
     /**
      * Provides the ability to programmatically set the color of the fast scroller's handle
      * @param color for the handle to be