ListView hide the part of headerView

 private int measureHeight;
 private float lastY = 0;
     @Override
     public boolean dispatchTouchEvent(MotionEvent event) {
         final int action = event.getAction();
         if (null == mLinearLayout) {
             return super.dispatchTouchEvent(event);
         }

         float y = event.getY();
         int mHeight = mLinearLayout.getHeight();
         switch (action) {
         case MotionEvent.ACTION_DOWN:
             if (measureHeight == 0) {
                 measureHeight = mLinearLayout.getHeight();
             }
             break;
         case MotionEvent.ACTION_MOVE:
             if (mListView.getFirstVisiblePosition() <= 0
                     || (mListView.getFirstVisiblePosition() > 0 && mHeight > 0)) {
                 if (lastY == 0) {
                     lastY = y;
                 }
                 float diffY = y - lastY;

                 int offset = 0;
                 if (diffY < 0 && mHeight > 0 && mHeight <= measureHeight) {
                     float scrollY = diffY - (measureHeight - mHeight);
                     offset = (int) (Math.abs(scrollY) <= measureHeight ? scrollY : -measureHeight);
                     mLinearLayout.setPadding(0, offset, 0, 0);
                 }

                 if (diffY > 0 && mHeight <= measureHeight) {
                     float scrollY = diffY - measureHeight + mHeight;
                     offset = (int) (Math.abs(scrollY + measureHeight) <= measureHeight ? scrollY
                             : 0);
                     mLinearLayout.setPadding(0, offset, 0, 0);
                 }
             }
             break;
         case MotionEvent.ACTION_UP:
             lastY = 0;
             break;
         default:
             return super.dispatchTouchEvent(event);
         }
         return super.dispatchTouchEvent(event);
     }