Webview-ios Cancel right side, bottom scroll bar, place a black background for scrolling up and down the border

Uiwebview * d_intro = [[uiwebview alloc] init];d _intro.delegate = self ;d _intro.datadetectortypes = uidatadetectortypelink;    //Cancel the right side, the lower scroll bar, Place the black background of the top and bottom scrolling border     d_intro.backgroundColor=[UIColor clearColor];      for  (Uiview *_aview in [d_intro subviews])        {         if  ([_aview iskindofclass:[uiscrollview  class]])           {              [(uiscrollview *) _aview  setshowsverticalscrollindicator:no];              //to the right of the scroll bar              [(UIScrollView  *) _AVIEW SETSHOWSHORIZONTALSCROLLINDICATOR:NO]; &Nbsp;           //scroll bar on the lower side                            for  (uiview *_inscrollview in _aview.subviews)                {                  if  ([_inscrollview iskindofclass:[uiimageview  Class])                   {                      _inscrollview.hidden = yes;  //Black picture when scrolling up and down the border                   }              }         }      }        [self.view addSubview:d_intro];

Webview-ios Cancel right side, bottom scroll bar, place a black background for scrolling up and down the border