{"id":4950,"date":"2022-08-25T07:37:47","date_gmt":"2022-08-25T02:07:47","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-navigation-bar-gets-funky-if-swipe-gesture-and-back-button-are-triggered-at-the-same-time\/"},"modified":"2022-08-25T07:37:47","modified_gmt":"2022-08-25T02:07:47","slug":"solved-navigation-bar-gets-funky-if-swipe-gesture-and-back-button-are-triggered-at-the-same-time","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-navigation-bar-gets-funky-if-swipe-gesture-and-back-button-are-triggered-at-the-same-time\/","title":{"rendered":"[Solved] Navigation Bar gets funky if Swipe Gesture and Back Button are triggered at the same time"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-27852154\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"27852154\" data-parentid=\"27852153\" data-score=\"2\" data-position-on-page=\"1\" data-highest-scored=\"1\" data-question-has-accepted-highest-score=\"1\" itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n<div class=\"post-layout\">\n<div class=\"votecell post-layout--left\"><\/div>\n<div class=\"answercell post-layout--right\">\n<div class=\"s-prose js-post-body\" itemprop=\"text\">\n<p>To fix this I disable user interactions for the navigationsbar. To do so, I subclass UINavigationViewController and use Key-Value-Observing to detect the state of the gesture recognizer.<\/p>\n<pre><code>#import \"NavigationViewController.h\"\n\n\n@interface NavigationViewController ()\n@end\n\n@implementation NavigationViewController\n\n- (void)viewDidLoad\n{\n    [super viewDidLoad];\n    [self.interactivePopGestureRecognizer addObserver:self\n                                           forKeyPath:@\"state\"\n                                              options:(NSKeyValueObservingOptionNew | NSKeyValueObservingOptionOld)\n                                              context:NULL];\n}\n\n\n\n\n- (void)observeValueForKeyPath:(NSString *)keyPath\n                      ofObject:(id)object\n                        change:(NSDictionary *)change\n                       context:(void *)context\n{\n    if ([keyPath isEqual:@\"state\"]) {\n        [self recognizer:object\n            changedState:[change[@\"new\"] integerValue]\n                oldState:[change[@\"old\"] integerValue]];\n\n    } else {\n        [super observeValueForKeyPath:keyPath\n                             ofObject:object\n                               change:change\n                              context:context];\n    }\n}\n\n- (void)recognizer:(UIGestureRecognizer *)recognizer\n      changedState:(UIGestureRecognizerState)newState\n          oldState:(UIGestureRecognizerState)oldState\n{\n    switch (newState) {\n        case UIGestureRecognizerStateEnded:\n        case UIGestureRecognizerStateCancelled:\n        case UIGestureRecognizerStateFailed:\n            [self.navigationBar setUserInteractionEnabled:YES]; break;\n\n        case UIGestureRecognizerStateBegan:\n            [self.navigationBar setUserInteractionEnabled:NO]; break;\n\n        default:\n            break;\n    }\n}\n\n\n- (void)dealloc\n{\n    [self.interactivePopGestureRecognizer removeObserver:self forKeyPath:@\"state\"];\n}\n\n@end\n<\/code><\/pre>\n<p>You will find the fixed code on <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/github.com\/vikingosegundo\/FunkyNavigationBar\/tree\/master\/fixed\/NavBugSample\">GitHub<\/a> as-well.<\/p>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\">0<\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved Navigation Bar gets funky if Swipe Gesture and Back Button are triggered at the same time <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] To fix this I disable user interactions for the navigationsbar. To do so, I subclass UINavigationViewController and use Key-Value-Observing to detect the state of the gesture recognizer. #import &#8220;NavigationViewController.h&#8221; @interface NavigationViewController () @end @implementation NavigationViewController &#8211; (void)viewDidLoad { [super viewDidLoad]; [self.interactivePopGestureRecognizer addObserver:self forKeyPath:@&#8221;state&#8221; options:(NSKeyValueObservingOptionNew | NSKeyValueObservingOptionOld) context:NULL]; } &#8211; (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change &#8230; <a title=\"[Solved] Navigation Bar gets funky if Swipe Gesture and Back Button are triggered at the same time\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-navigation-bar-gets-funky-if-swipe-gesture-and-back-button-are-triggered-at-the-same-time\/\" aria-label=\"More on [Solved] Navigation Bar gets funky if Swipe Gesture and Back Button are triggered at the same time\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[1085,471,470,765],"class_list":["post-4950","post","type-post","status-publish","format-standard","hentry","category-solved","tag-cocoa-touch","tag-ios","tag-objective-c","tag-uinavigationbar"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] Navigation Bar gets funky if Swipe Gesture and Back Button are triggered at the same time - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-navigation-bar-gets-funky-if-swipe-gesture-and-back-button-are-triggered-at-the-same-time\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Navigation Bar gets funky if Swipe Gesture and Back Button are triggered at the same time - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] To fix this I disable user interactions for the navigationsbar. To do so, I subclass UINavigationViewController and use Key-Value-Observing to detect the state of the gesture recognizer. #import &quot;NavigationViewController.h&quot; @interface NavigationViewController () @end @implementation NavigationViewController - (void)viewDidLoad { [super viewDidLoad]; [self.interactivePopGestureRecognizer addObserver:self forKeyPath:@&quot;state&quot; options:(NSKeyValueObservingOptionNew | NSKeyValueObservingOptionOld) context:NULL]; } - (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change ... 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