iphone - UIPopoverController is showing on the other button -

when uibutton tapped display uipopovercontroller, showing on other uibarbuttonitemand showing blank black opaque uipopovercontroller.

here implemented code:

- (ibaction)buttontapped:(id)sender {  uibutton *btnaction;  bookmarkviewcontroller* bookmarkvc = [[bookmarkviewcontroller alloc] init];  _buttonpopovercontroller = [[uipopovercontroller alloc]                                 initwithcontentviewcontroller:bookmarkvc];  _buttonpopovercontroller.delegate = self;  cgrect popoverframe = btnaction.frame; [_buttonpopovercontroller setpopovercontentsize:cgsizemake(320, 355) animated:no];  //only required if using delegate methods  [_buttonpopovercontroller presentpopoverfromrect:popoverframe                                               inview:self.view                             permittedarrowdirections:uipopoverarrowdirectionup                                             animated:yes]; } 

you missing assing sender btnaction

that uibutton *btnaction=(uibutton *)sender;

try this,

- (ibaction)buttontapped:(id)sender {  uibutton *btnaction=(uibutton *)sender;   uistoryboard *storyboard = [uistoryboard storyboardwithname:@"mainstoryboard" bundle:nil]; uiviewcontroller *bookmarkvc = [storyboard instantiateviewcontrollerwithidentifier:@"bookmarkviewcontroller"];  _buttonpopovercontroller = [[uipopovercontroller alloc]                                 initwithcontentviewcontroller:bookmarkvc];  _buttonpopovercontroller.delegate = self;  cgrect popoverframe = btnaction.frame; [bookmarkvc setcontentsizeforviewinpopover:cgsizemake(320, 355)];  //only required if using delegate methods  [_buttonpopovercontroller presentpopoverfromrect:popoverframe                                               inview:self.view                             permittedarrowdirections:uipopoverarrowdirectionup                                             animated:yes]; }