objective c - UIActivityViewController presenting issue iphone - 


uiactivityviewcontroller *activityvc = [[uiactivityviewcontroller alloc] initwithactivityitems:@[message] applicationactivities:nil]; activityvc.excludedactivitytypes = nil; [activityvc setcompletionhandler:^(nsstring *activitytype, bool completed)  {      activityvc.completionhandler = nil; //         if (completed) //             [utils alertmessage:knslocalizedstring(@"title20_key#0", nil) title:nil delegate:nil cancelbutton:knslocalizedstring(@"ok_key#0", nil) otherbutton:nil hiden:nil];          [activityvc dismissviewcontrolleranimated:yes completion:^{              _issharing = no;          }];      }];  if ([self respondstoselector:@selector(popoverpresentationcontroller)]) {     activityvc.popoverpresentationcontroller.sourceview = self.view; }  [self presentviewcontroller:activityvc animated:yes completion:^{     _issharing = yes; }];

i getting below warning.

warning: attempt present on presenting (null)

check viewcontroller giving self null.

you can check tutorial uiactivityviewcontroller below link

http://www.amaniphoneblog.com/2014/09/uiactivityviewcontroller-ios-tutorial.html


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