ios - UIPopoverController is not so with a color -

does know why appearing white part? view gray, gets 2 white pieces

whites: arrow , final popover!

[update]

this code calls popover , makes arrow points button clicked!

- (void) buttonfilter {      if (viewfilter == @"artistas") {         content = [self.storyboard instantiateviewcontrollerwithidentifier:@"tipoartistaviewcontroller"]; // mudar para o novo filtro de artistas     } else if (viewfilter == @"músicas") {         content = [self.storyboard instantiateviewcontrollerwithidentifier:@"categoriaviewcontroller"];     }      [self callfilter:btnfilter filter:content]; }  - (void)callfilter:(id)sender filter:(uiviewcontroller *) content{     self.currentpop = popovercontroller;      popovercontroller = [[wypopovercontroller alloc] initwithcontentviewcontroller:content];      uibutton * bt = (uibutton * )sender;     uiview *view = [bt valueforkey:@"view"];     popovercontroller.popovercontentsize = cgsizemake(320, 180);     popovercontroller.delegate = self;     [popovercontroller presentpopoverfromrect:view.bounds inview:view permittedarrowdirections:wypopoverarrowdirectionany animated:yes];  } 

the next mount session:

//extend , collpase - (void)setupviewcontroller {      categoriabd = [categoriadao selectcategoria];       self.data = [[nsmutablearray alloc] init];     (int = 0; < [categoriabd count]; i++)     {         nsmutabledictionary * teste = [categoriabd objectforkey:[nsstring stringwithformat:@"%i", i]];         id = [[teste objectforkey:@"1"] integervalue];         subcategoriabd = [categoriadao selectsubcategoriabycategoriaid:id];          nsmutablearray* section = [[nsmutablearray alloc] init];         (int j = 0; j < [subcategoriabd count]; j++)         {             nsmutabledictionary * subcat = [subcategoriabd objectforkey:[nsstring stringwithformat:@"%i", j]];             [section addobject:[nsstring stringwithformat:[subcat objectforkey:@"1"]]];         }         [self.data addobject:section];                           }      self.headers = [[nsmutablearray alloc] init];     (int = 0; < [categoriabd count]; i++)     {          nsstring *instr = [nsstring stringwithformat: @"%i", (int)i];         nomecategoria = [categoriabd objectforkey:instr];          uilabel *label = [[uilabel alloc] initwithframe:cgrectmake(5, 5, 310, 40)];         [label settext:[nomecategoria objectforkey:@"2"]];          uiview* header = [[uiview alloc] init];          [header setbackgroundcolor:[uicolor colorwithred:(226/255.0) green:(226/255.0) blue:(226/255.0) alpha:1]];         [header addsubview:label];         [self.headers addobject:header];      } } 

you can create custom uipopoverbackgroundview subclass sets properties of arrow want.

popovercontroller.popoverbackgroundviewclass = [mypopoverbackgroundview class];