没有为whatsapp事件调用UIActivityViewControllersetCompletionWithItemsHandler。有人遇到过同样的问题吗？请分享解决方案(如果有)。NSArray*applicationActivities=@[[[JBWhatsAppActivityalloc]init]];UIActivityViewController*activityViewController=nil;if(installed)activityViewController=[[UIActivityViewControlleralloc]initWithActivityI