private float startx;      private float starty;      private float upoffset;         @Override      public boolean onTouchEvent(MotionEvent event) {             switch (event.getAction()) {          case MotionEvent.ACTION_DOWN:              startx = event.getX();              starty = event.getY();              break;          case MotionEvent.ACTION_MOVE:              offset = (int) (event.getX() - startx) / 3;              // Log.e("TAST", offset + "offset");              if (Math.abs(offset) > 10) {                  Log.e("TAG", "Left and Right");              }              upoffset = event.getY() - starty;              if (Math.abs(upoffset) > 20) {                  Log.e("TAG", "UP and Down");              }                 invalidate();             default:              break;          }             return true;      }